View source for The Flash season 1

{{Use American English|date=September 2018}}
{{Use mdy dates|date=September 2018}}
{{Infobox television season
| bgcolour      = #97B5CC
| season_number = 1
| image         = The Flash season 1.jpg
| caption       = Home media cover
| showrunner    = [[Andrew Kreisberg]]
| starring      = {{Plainlist|
* [[Grant Gustin]]
* [[Candice Patton]]
* [[Danielle Panabaker]]
* [[Rick Cosnett]]
* [[Carlos Valdes (actor)|Carlos Valdes]]
* [[Tom Cavanagh]]
* [[Jesse L. Martin]]
}}
| num_episodes  = 23
| network       = [[The CW]]
| first_aired   = {{Start date|2014|10|7}}
| last_aired    = {{End date|2015|5|19}}
| episode_list  = List of The Flash episodes
}}
The first season of the American television series ''[[The Flash (2014 TV series)|The Flash]]'' premiered on [[The CW]] on October 7, 2014, and concluded on May 19, 2015, after airing 23 episodes. The series is based on the [[DC Comics]] character [[Flash (Barry Allen)|Barry Allen / Flash]], a costumed superhero crime-fighter with the power to move at superhuman speeds. It is a [[Spin-off (media)|spin-off]] from ''[[Arrow (TV series)|Arrow]]'', existing in the same [[Arrowverse|fictional universe]], and was produced by [[Berlanti Productions]], [[Warner Bros. Television]], and [[DC Comics|DC Entertainment]], with [[Andrew Kreisberg]] serving as [[showrunner]].

The series follows [[Barry Allen (Arrowverse)|Allen]], portrayed by [[Grant Gustin]], a crime scene investigator who gains super-human speed, which he uses to fight criminals, including others who have also gained superhuman abilities. The season follows Barry getting his super speed from an accident caused by [[S.T.A.R. Labs (Arrowverse)|S.T.A.R. Labs]] who helps him fight criminals who also get powers from the same accident and helping Barry pursue his mother's killer the [[Eobard Thawne (Arrowverse)|Reverse-Flash]]. Gustin is joined by main cast members [[Candice Patton]], [[Danielle Panabaker]], [[Rick Cosnett]], [[Carlos Valdes (actor)|Carlos Valdes]], [[Tom Cavanagh]], and [[Jesse L. Martin]]. ''The Flash'' was picked up for a full season by The CW in October 2014, and filming took place primarily in [[Vancouver, British Columbia]], Canada.

The [[Pilot (The Flash)|series premiere]] was watched by 4.8 million viewers and had a 1.9 18–49 demographic rating, making it The CW's most watched and highest rated series premiere since ''[[The Vampire Diaries]]'' in 2009. It also became The CW's second-most watched series premiere ever, behind ''[[90210 (TV series)|90210]]'', and the third-highest rated in the 18–49 demographic. The first season finished as the 118th ranked show, with an average viewership of 4.62 million, making it the most watched series ever on The CW, and also the highest rated series among men 18–49 and men 18+ ever on the network. The first season of ''The Flash'' received generally positive reviews from critics. Reviews for the series became increasingly positive as the season progressed, with the finale receiving critical acclaim. The series was renewed for a [[The Flash season 2|second season]] on January 11, 2015.<ref name="S2Renew"/>
{{TOC limit|3}}

==Episodes==
{{See also|List of The Flash episodes}}
<onlyinclude>{{Episode table |caption=''The Flash'' season 1 episodes |background=#97B5CC |overall=5 |season=5 |title=20 |director=13 |writer=27 |airdate=13 |prodcode=7 |viewers=10 |country=U.S. |episodes=
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 1
| EpisodeNumber2  = 1
| Title           = [[Pilot (The Flash)|Pilot]]
| DirectedBy      = [[David Nutter]]
| WrittenBy       = {{StoryTeleplay|s=[[Greg Berlanti]] & [[Andrew Kreisberg]] & [[Geoff Johns]]|t=Andrew Kreisberg & Geoff Johns}}
| OriginalAirDate = {{Start date|2014|10|7}}
| ProdCode        = 296848
| Viewers         = 4.83<ref name="1.01">{{cite web|url=http://tvbythenumbers.zap2it.com/2014/10/16/tuesday-final-ratings-selfie-marvels-agents-of-s-h-i-e-l-d-forever-adjusted-down/315994/ |title=Revised Tuesday, October 7 Final Ratings: 'Selfie', 'Marvel's Agents of S.H.I.E.L.D.' & 'Forever' Adjusted Down |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=October 16, 2014 |access-date=October 16, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141018160419/http://tvbythenumbers.zap2it.com/2014/10/16/tuesday-final-ratings-selfie-marvels-agents-of-s-h-i-e-l-d-forever-adjusted-down/315994/ |archive-date=October 18, 2014 }}</ref>
| ShortSummary    = [[Barry Allen (Arrowverse)|Barry Allen]], a forensic crime scene assistant for [[Central City (Arrowverse)|Central City]] Police Department, is struck by lightning during a storm that is created after a particle accelerator from [[S.T.A.R. Labs (Arrowverse)|S.T.A.R. Labs]] explodes. In a coma for nine months, Barry awakens in S.T.A.R. Labs, having been placed in the care of its founder [[Harrison Wells]] and his assistants [[Caitlin Snow (Arrowverse)|Dr. Caitlin Snow]] and [[Cisco Ramon (Arrowverse)|Cisco Ramon]]. Barry learns that he can move at extraordinary speeds, and that there were other "[[metahuman]]s" created from the explosion. One of them, [[Weather Wizard|Clyde Mardon]], is robbing banks with his ability to control the weather. In order to stop Mardon, Barry is outfitted with a suit, designed by Cisco, that can withstand his high speed. He tracks down Mardon and with Detective [[Joe West (Arrowverse)|Joe West]], who learns of Barry's abilities, Barry is able to stop Mardon, who is killed by Joe. With his new powers, Barry vows to exonerate his father, [[Henry Allen (The Flash)|Henry]], who is incarcerated for murdering his wife, [[Nora Allen (Arrowverse)|Nora]], whom Barry witnessed, at a young age, being killed by another metahuman. He chooses the alias "Flash" for his alter ego. Wells, secretly revealed to be neither paraplegic nor needing glasses, reads a newspaper from 2024 stating the missing status of the Flash.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 2
| EpisodeNumber2  = 2
| Title           = Fastest Man Alive
| DirectedBy      = David Nutter
| WrittenBy       = {{StoryTeleplay|s=Greg Berlanti & Andrew Kreisberg|t=Andrew Kreisberg & Geoff Johns}}
| OriginalAirDate = {{Start date|2014|10|14}}
| ProdCode        = 3J5352
| Viewers         = 4.27<ref name="1.02">{{cite web|url=http://tvbythenumbers.zap2it.com/2014/10/15/tuesday-final-ratings-the-flash-marvels-agents-of-s-h-i-e-ld-the-voice-about-a-boy-chicago-fire-adjusted-down/315328/ |title=Tuesday Final Ratings: 'The Flash', 'Marvel's Agents of S.H.I.E.LD.', 'The Voice' & 'The Mindy Project' Adjusted Up; 'About A Boy' & 'Chicago Fire' Adjusted Down |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=October 15, 2014 |access-date=October 15, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141016131451/http://tvbythenumbers.zap2it.com/2014/10/15/tuesday-final-ratings-the-flash-marvels-agents-of-s-h-i-e-ld-the-voice-about-a-boy-chicago-fire-adjusted-down/315328/ |archive-date=October 16, 2014 }}</ref>
| ShortSummary    = In flashbacks, it is revealed that Joe became Barry's legal guardian but did not let him visit Henry in prison at the latter's request. Barry begins using his abilities to stop minor crimes and help citizens across the city while starting to develop debilitating side effects. While guiding [[Iris West (Arrowverse)|Iris West]], who seeks his help to do her school assignment, Barry witnesses a robbery by a crew of men, but passes out while trying to stop them. The S.T.A.R. Labs team determines that Barry becomes [[hypoglycemic]] from the use of his abilities due to a sped-up metabolism and needs to ingest more calories to maintain his energy level. The team eventually learns that there is actually one robber, [[Danton Black (Arrowverse)|Danton Black]], who has the ability to create clones of himself. Black intends to kill his former employer [[Simon Stagg (Arrowverse)|Simon Stagg]], who stole Black's cloning research. With encouragement from Joe, Barry goes after Black and successfully stops him. However, Black commits suicide. Afterward, Barry accepts Joe's help in the investigation of Nora's murder. Later, Wells visits Stagg, who has already become obsessed with the Flash and plans to exploit them as he did to Black. Wells then kills Stagg.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 3
| EpisodeNumber2  = 3
| Title           = Things You Can't Outrun
| DirectedBy      = [[Jesse Warn]]
| WrittenBy       = [[Alison Schapker]] & [[Grainne Godfree]]
| OriginalAirDate = {{Start date|2014|10|21}}
| ProdCode        = 3J5353
| Viewers         = 3.59<ref name="1.03">{{cite web|url=http://tvbythenumbers.zap2it.com/2014/10/22/tuesday-final-ratings-the-voice-the-flash-marry-me-adjusted-down-final-world-series-numbers/317988/ |title=Tuesday Final Ratings: 'The Voice', 'The Flash' & 'Marvel's Agents of S.H.I.E.L.D.' Adjusted Up; 'Marry Me' Adjusted Down + Final World Series Numbers |last=Kondolojy |first=Amanda |work=[[TV by the Numbers]] |date=October 22, 2014 |access-date=October 22, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141024135052/http://tvbythenumbers.zap2it.com/2014/10/22/tuesday-final-ratings-the-voice-the-flash-marry-me-adjusted-down-final-world-series-numbers/317988/ |archive-date=October 24, 2014 }}</ref>
| ShortSummary    = As the police investigate the murder of one of the city's crime families, Barry suspects that the killer may be a metahuman who can control poison gases. As Barry and Joe work to discover the killer's identity, Wells and his team work to retrofit the particle accelerator into a prison for metahumans where they can begin to find a way of reversing their mutations. This brings up difficult feelings and memories for Snow, whose fiancé, [[Ronnie Raymond (Arrowverse)|Ronnie Raymond]], was killed by the explosion. The team identifies the killer as [[Kyle Nimbus (Arrowverse)|Kyle Nimbus]], discovering that Nimbus does not control gases, but transforms his body into them. The team learns that Joe, the lead detective in the original case, is Nimbus' next target. Barry races to Iron Heights Prison to save Joe's life, forcing Nimbus to overexert himself so that he can apprehend him. The team locks Nimbus into a cell they have made. In a flashback to when the accelerator explodes, Wells is seen going into his hidden room and viewing a surveillance video of Barry getting struck by lightning in his lab.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 4
| EpisodeNumber2  = 4
| Title           = Going Rogue
| DirectedBy      = [[Glen Winter]]
| WrittenBy       = Geoff Johns & [[Kai Wu|Kai Yu Wu]]
| OriginalAirDate = {{Start date|2014|10|28}}
| ProdCode        = 3J5354
| Viewers         = 3.53<ref name="1.04">{{cite web|url=http://tvbythenumbers.zap2it.com/2014/10/29/tuesday-final-ratings-the-flash-the-voice-ncis-marry-me-adjusted-down-final-world-series-numbers/320740/ |title=Tuesday Final Ratings: 'The Flash', 'The Voice', 'NCIS' & 'Person of Interest' Adjusted Up; 'Marry Me' Adjusted Down & Final World Series Numbers |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=October 29, 2014 |access-date=October 29, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141031180435/http://tvbythenumbers.zap2it.com/2014/10/29/tuesday-final-ratings-the-flash-the-voice-ncis-marry-me-adjusted-down-final-world-series-numbers/320740/ |archive-date=October 31, 2014 }}</ref>
| ShortSummary    = Wells begins testing Barry's powers by having him perform multiple tasks at superspeed. In the middle of the tests, a group of men attempt to hijack an armored truck carrying a diamond on its way to a museum. Barry races over and stops the crime, later identifying [[Leonard Snart (Arrowverse)|Leonard Snart]] from a set of police mugshots. [[Felicity Smoak (Arrowverse)|Felicity Smoak]] arrives to check on Barry, after learning that he woke from his coma. Barry introduces her to his friends at S.T.A.R. Labs. Realising that the Flash, also known as the "Streak", is a man and not some kind of drone like the rest of his crew believe, Snart acquires a couple of items of stolen tech to help him continue without any powers. This includes a [[Cryonics|cryonic]] gun taken from S.T.A.R. Labs. He begins surveilling the diamond at the museum, but is seen and forced to use his cold gun to escape. Cisco reveals that he created the gun as a fail-safe against Barry should he become a villain like the other metahumans they have encountered. Felicity helps the team locate Snart, who is now working on his own, when he sets a trap for Barry. Cisco, Caitlin, and Felicity arrive in time to save Barry, and Snart is able to escape. Joe finally accepts Iris's relationship with Eddie Thawne, his partner. Wells demands Cisco not to build another fail-safe against Barry again. Barry kisses Felicity goodbye. Later, Snart tracks down his [[Mick Rory (Arrowverse)|former partner]], who has an affinity for fire, and offers him the other weapon he stole and a place by Snart's side taking back Central City from the Flash.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 5
| EpisodeNumber2  = 5
| Title           = Plastique
| DirectedBy      = [[Dermott Downs]]
| WrittenBy       = [[Aaron and Todd Helbing|Aaron Helbing & Todd Helbing]] & [[Brooke Eikmeier]]
| OriginalAirDate = {{Start date|2014|11|11}}
| ProdCode        = 3J5355
| Viewers         = 3.46<ref name="1.05">{{cite web |url=http://tvbythenumbers.zap2it.com/2014/11/12/tuesday-final-ratings-the-voice-the-mindy-project-adjusted-up/ |title=Tuesday Final Ratings: 'The Voice' & 'The Mindy Project' Adjusted Up |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=November 12, 2014 |access-date=November 12, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141122052424/http://tvbythenumbers.zap2it.com/2014/11/12/tuesday-final-ratings-the-voice-the-mindy-project-adjusted-up/ |archive-date=November 22, 2014 }}</ref>
| ShortSummary    = [[Bette Sans Souci (Arrowverse)|Bette Sans Souci]], a metahuman with the ability to turn anything she touches into an explosive, appears in Central City. She is being hunted by [[General Wade Eiling (Arrowverse)|General Wade Eiling]], and is a former military explosives expert. Barry brings her to S.T.A.R. Labs where the team explains to her that she was changed by the particle accelerator, which bonded bomb shrapnel to her body on a cellular level; and they cannot reverse the process. Secretly, Wells convinces Bette to kill Eiling. Barry races to stop her, and Eiling shoots her, who dies after mentioning Wells' name. Her body turns into a bomb. Barry speeds off with the body and drops it in the river to save the city from the massive explosion. Eiling visits Wells, demanding that they work together once again, this time to collect metahumans. Wells refuses and warns Eiling to never return to S.T.A.R. Labs. Meanwhile, Barry ends his friendship with Iris after she refuses his advice not to write about the "Streak". In a flashback set five years previously, Wells tells Eiling he is ending their experiments. After Eiling leaves, Wells walks to a cage and tells [[Gorilla Grodd (Arrowverse)|Gorilla Grodd]] that he has plans for him.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 6
| EpisodeNumber2  = 6
| Title           = The Flash Is Born
| DirectedBy      = [[Millicent Shelton]]
| WrittenBy       = [[Jaime Paglia]] & [[Chris Rafferty]]
| OriginalAirDate = {{Start date|2014|11|18}}
| ProdCode        = 3J5356
| Viewers         = 3.73<ref name="1.06">{{cite web |url=http://tvbythenumbers.zap2it.com/2014/11/19/tuesday-final-ratings-the-voice-the-flash-marry-me-adjusted-down/329480/ |title=Tuesday Final Ratings: 'The Voice', 'The Flash' & 'Chicago Fire' Adjusted Up; 'Marry Me' Adjusted Down |last=Kondolojy |first=Amanda |work=[[TV by the Numbers]] |date=November 19, 2014 |access-date=November 19, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141121153527/http://tvbythenumbers.zap2it.com/2014/11/19/tuesday-final-ratings-the-voice-the-flash-marry-me-adjusted-down/329480/ |archive-date=November 21, 2014 }}</ref>
| ShortSummary    = Barry speeds off to stop a car thief; but the thief's skin turns to steel and Barry breaks his hand while punching. He runs back to the lab before he can be hurt further. The thief is identified as [[Tony Woodward (Arrowverse)|Tony Woodward]], Barry's childhood bully. Back at the lab, Cisco determines that if Barry can hit Woodward with a specific [[velocity]] at right angle, then he can create enough force to compromise Woodward's metal structure. Woodward kidnaps Iris and demands that she write about him. Barry arrives and manages to temporarily disable Woodward's abilities. Afterward, Woodward is locked away at S.T.A.R. Labs and finds out that Barry is the Flash, the name Iris also uses in her blog on the advice of Barry, who reconciles with her. Meanwhile, Joe continues investigating Nora's murder and gets suspicious of Wells, who opened S.T.A.R. Labs one month after Nora's murder; but Wells states that he came to Central City because of his wife's death. Joe, convinced that Wells is not involved, is visited by the mysterious second speedster who killed Nora, stealing the case file and threatening Iris's life if Joe does not drop his investigation.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 7
| EpisodeNumber2  = 7
| Title           = Power Outage
| DirectedBy      = [[Larry Shaw (director)|Larry Shaw]]
| WrittenBy       = Alison Schapker & Grainne Godfree
| OriginalAirDate = {{Start date|2014|11|25}}
| ProdCode        = 3J5357
| Viewers         = 3.47<ref name="1.07">{{cite web |url=http://tvbythenumbers.zap2it.com/2014/11/26/tuesday-final-ratings-ncis-dancing-with-the-stars-adjusted-up/ |title=Tuesday Final Ratings: 'NCIS' & 'Dancing With The Stars' Adjusted Up |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=November 26, 2014 |access-date=November 26, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141205091653/http://tvbythenumbers.zap2it.com/2014/11/26/tuesday-final-ratings-ncis-dancing-with-the-stars-adjusted-up/ |archive-date=December 5, 2014 }}</ref>
| ShortSummary    = Wells returns to his secret room, where it is revealed that he has been documenting Barry's abilities, and using his [[artificial intelligence]], [[Gideon (The Flash)|Gideon]], to look at events in the future. Barry arrives at a crime scene where the victim was murdered via electrocution, and charred beyond recognition, suggesting a metahuman was involved. While investigating the victim's identity, the team identifies a power drain in the city. When Barry arrives, he is attacked by [[Farooq Gibran]], a man who has the ability to siphon electrical energy. The attack drains Barry of his speed, and Gideon reveals to Wells that there are currently no references to the Flash in the future. Wells realizes that Barry's problem is psychological. Gibran attacks S.T.A.R. Labs, kills Woodward and Wells' life gets in danger, forcing Barry to overcome his fear, connect to his speed and kill Gibran. Meanwhile, [[William Tockman (Arrowverse)|Tockman]] starts a hostage crisis at a police station and critically shoots Eddie; but Iris manages to stop him and he is rearrested. Later, Wells sees that the timeline is safe, and takes a sample of Gibran's blood to determine how he was able to drain Barry's abilities.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 8
| EpisodeNumber2  = 8
| Title           = [[Flash vs. Arrow]]
| DirectedBy      = Glen Winter
| WrittenBy       = {{StoryTeleplay|s=Greg Berlanti & Andrew Kreisberg|t=[[Ben Sokolowski]] & Brooke Eikmeier}}
| OriginalAirDate = {{Start date|2014|12|2}}
| ProdCode        = 3J5358
| Viewers         = 4.34<ref name="1.08">{{cite web |url=http://tvbythenumbers.zap2it.com/2014/12/03/tuesday-final-ratings-the-flash-marry-me-adjusted-down/334972/ |title=Tuesday Final Ratings: 'The Flash' & 'Chicago Fire' Adjusted Up; 'Marry Me' Adjusted Down |last=Kondolojy |first=Amanda |work=[[TV by the Numbers]] |date=December 3, 2014 |access-date=December 3, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141217065008/http://tvbythenumbers.zap2it.com/2014/12/03/tuesday-final-ratings-the-flash-marry-me-adjusted-down/334972/ |archive-date=December 17, 2014 }}</ref>
| ShortSummary    = Eddie proposes a task force to hunt down the Flash. A new metahuman, [[Roy Bivolo (Arrowverse)|Roy Bivolo]], shows up with the ability to send people into an uncontrollable rage, and uses his ability to rob a bank. [[Oliver Queen (Arrowverse)|Oliver Queen]] informs Barry that he and his team are tracking a killer who uses lethal boomerangs.{{efn|Identified offscreen as  [[Digger Harkness (Arrowverse)|Digger Harkness / Captain Boomerang]].}} Barry and Oliver agree to team-up and catch each other's targets. Barry decides to go after Bivolo by himself. Bivolo uses his abilities on Barry; but because of Barry's powers it makes the effects last longer. Oliver tries to stop Barry, and the two engage in a fight until Wells and Joe use colored strobe light to reset Barry's emotional state. Afterward, Barry and Oliver capture Bivolo and place him in the prison at S.T.A.R. Labs. Eddie's task force is established after he was beaten by an enraged Flash. Barry confirms Oliver's belief that he has a lot to learn. Oliver advises him to stay away from Iris, whom Barry is in love with. Iris decides to end her support of the Flash. Oliver asks Barry's team to keep his alter ego a secret. A new metahuman able to manipulate fire appears in Central City.
----
{{Television crossover note|parts=2|-|[[Arrow season 3#ep54|''Arrow'' season 3 episode 8]]}}
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}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 9
| EpisodeNumber2  = 9
| Title           = The Man in the Yellow Suit
| DirectedBy      = [[Ralph Hemecker]]
| WrittenBy       = Todd Helbing & Aaron Helbing
| OriginalAirDate = {{Start date|2014|12|9}}
| ProdCode        = 3J5359
| Viewers         = 4.66<ref name="1.09">{{cite web |url=http://tvbythenumbers.zap2it.com/2014/12/10/tuesday-final-ratings-victorias-secret-fashion-show-supernatural-the-mindy-project-adjusted-down/337776/ |title=Tuesday Final Ratings: 'Victoria's Secret Fashion Show' & 'The Voice' Adjusted Up; 'Supernatural' & 'The Mindy Project' Adjusted Down |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=December 10, 2014 |access-date=December 10, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141231200505/http://tvbythenumbers.zap2it.com/2014/12/10/tuesday-final-ratings-victorias-secret-fashion-show-supernatural-the-mindy-project-adjusted-down/337776/ |archive-date=December 31, 2014 }}</ref>
| ShortSummary    = The yellow-suited speedster who killed Nora Allen returns, in search of Mercury Lab's [[tachyon]] particle technology. Barry encounters the "[[Reverse-Flash]]" and engages him but is swiftly defeated, with the villain insinuating that he and Barry have been lifelong enemies. Ronnie is revealed as the flame-controlling metahuman, suffering from memory-loss after having survived the explosion. Per Henry's advice, Barry confesses his love for Iris before the tachyon particle technology is used as bait to lure the Reverse-Flash into a trap. The villain manages to escape, however, and proceeds to attack Wells and the police, mysteriously sparing Eddie before engaging in Barry again. Ronnie appears and fends off the Reverse-Flash before they both flee the scene. Joe tells Eddie about metahumans and asks him to keep it a secret. Cisco realizes that there were two speedsters in Barry's house the night Nora died. Later, Wells enters his secret room and reveals the Reverse-Flash suit in a hidden chamber. Wells places the stolen tachyon device on it, and speaks in the villainous speedster's distorted voice, revealing himself to be the Reverse-Flash.
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}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 10
| EpisodeNumber2  = 10
| Title           = Revenge of the Rogues
| DirectedBy      = [[Nick Copus]]
| WrittenBy       = Kai Yu Wu & Geoff Johns
| OriginalAirDate = {{Start date|2015|1|20}}
| ProdCode        = 3J5360
| Viewers         = 3.87<ref name="1.10">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/01/22/tuesday-final-ratings-the-flash-parks-and-recreation-supernatural-adjusted-down/353762/ |title=Tuesday Final Ratings: 'The Flash' & 'MasterChef Junior' Adjusted Up; 'Parks and Recreation' & 'Supernatural' Adjusted Down |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=January 22, 2015 |access-date=January 22, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150123004214/http://tvbythenumbers.zap2it.com/2015/01/22/tuesday-final-ratings-the-flash-parks-and-recreation-supernatural-adjusted-down/353762/ |archive-date=January 23, 2015 }}</ref>
| ShortSummary    = As Barry works on improving his speed through various training exercises, Leonard Snart returns to Central City with the cold gun and a new partner, Mick Rory, to set a trap for the Flash. Barry discovers his plan, and agrees with Wells not to engage Snart in the hope that he goes away and no one gets hurt like the last time. Snart and Rory, who now has a gun that can emit absolute hot temperatures, kidnap Caitlin to force Barry out of hiding. Cisco and Barry find a way to defeat Snart and Rory. The Flash faces the duo in the city for a showdown, exposing himself to the public. Barry eventually gets them to cross their streams with Eddie's help, successfully damaging the weapons and disabling the pair, who are arrested and the guns delivered to S.T.A.R. Labs. While in transport to Iron Heights, Snart and Rory are broken out by [[Lisa Snart (Arrowverse)|Snart's sister]]. Meanwhile, Caitlin investigates the cause of Ronnie's transformation and finds out that the [[US Army|Army]] is covering up the incident. After Iris moves in with Eddie, Barry decides to move back in with Joe.
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}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 11
| EpisodeNumber2  = 11
| Title           = The Sound and the Fury
| DirectedBy      = [[John F. Showalter]]
| WrittenBy       = Alison Schapker & Brooke Eikmeier
| OriginalAirDate = {{Start date|2015|1|27}}
| ProdCode        = 3J5361
| Viewers         = 4.08<ref name="1.11">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/01/28/tuesday-final-ratings-masterchef-jr-supernatural-adjusted-down/356586/ |title=Tuesday Final Ratings: 'MasterChef Jr.' & 'Marry Me' Adjusted Up; 'Supernatural' Adjusted Down |last=Kondolojy |first=Amanda |work=[[TV by the Numbers]] |date=January 28, 2015 |access-date=January 28, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150626181414/http://tvbythenumbers.zap2it.com/2015/01/28/tuesday-final-ratings-masterchef-jr-supernatural-adjusted-down/356586/ |archive-date=June 26, 2015 }}</ref>
| ShortSummary    = While home, Wells receives a threatening call from an unidentified person before using his super speed to save his life from an attempt. Wells informs Barry and the team that the caller was [[Hartley Rathaway (Arrowverse)|Hartley Rathaway]], a former protégé. Rathaway begins attacking his family's business with sonic blasts, and after Barry stops him, Rathaway reveals that he knows a secret of Wells', who states that Rathaway warned him that the particle accelerator could explode, but Wells chose to risk it for the rewards. Cisco discovers that Rathaway intentionally got caught so he could steal information from S.T.A.R. Labs that would allow him to identify the frequency of Barry's molecules so he can kill him. A trap set by Rathaway starts shredding Barry's organs. Wells manages to disable Rathaway's weapons. Later, Joe has Eddie start an investigation into Wells. Rathaway, imprisoned back in the particle accelerator, reveals to Cisco that he knows where Ronnie is and how to save him. In his secret room, Wells uses the tachyon technology to temporarily recharge his [[Speed Force]] energy. Meanwhile, Iris starts working as a journalist and realizes that she is hired to write about the Flash.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 12
| EpisodeNumber2  = 12
| Title           = Crazy for You
| DirectedBy      = [[Rob Hardy]]
| WrittenBy       = Aaron Helbing & Todd Helbing
| OriginalAirDate = {{Start date|2015|2|3}}
| ProdCode        = 3J5362
| Viewers         = 3.60<ref name="1.12">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/02/04/tuesday-final-ratings-supernatural-marry-me-the-mindy-project-about-a-boy-adjusted-down/ |title=Tuesday Final Ratings: 'Supernatural', 'Marry Me', 'The Mindy Project' & 'About A Boy' Adjusted Down |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=February 4, 2015 |access-date=February 4, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150626181731/http://tvbythenumbers.zap2it.com/2015/02/04/tuesday-final-ratings-supernatural-marry-me-the-mindy-project-about-a-boy-adjusted-down/ |archive-date=June 26, 2015 }}</ref>
| ShortSummary  = A woman with the ability to teleport to any location she can see breaks into Iron Heights and frees her boyfriend, Clay Parker. The S.T.A.R. Labs team identifies the woman as [[Shawna Baez]]. To help Barry, Henry tracks down leads in Iron Heights and finds out that Parker owed money to a local crime boss and is planning a heist to pay it back. Barry learns the location of the heist, finding Baez and Parker and is able to capture her after removing all the lights in a tunnel, effectively making her unable to teleport without being able to see. Parker manages to escape. Meanwhile, Cisco brings Rathaway out of his cell so that the latter can show the truth about Ronnie; Rathaway reveals that [[Martin Stein (Arrowverse)|Doctor Martin Stein]], who developed research into a F.I.R.E.S.T.O.R.M. project focused on transmuting elements, was at S.T.A.R. Labs the day of the explosion. Rathaway reveals that during the explosion Ronnie and Stein merged, before he escapes Cisco's custody. Barry starts dating Iris's colleague, [[Linda Park (Arrowverse)|Linda Park]]. Henry insinuates to Barry that he knows Barry's alter ego. Elsewhere, two city workers are attacked by Grodd.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 13
| EpisodeNumber2  = 13
| Title           = The Nuclear Man
| DirectedBy      = Glen Winter
| WrittenBy       = Andrew Kreisberg & Katherine Walczak
| OriginalAirDate = {{Start date|2015|2|10}}
| ProdCode        = 3J5363
| Viewers         = 3.66<ref name="1.13">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/02/11/tuesday-final-ratings-ncis-the-flash-parks-and-recreation-ncis-new-orleans-person-of-interest-about-a-boy-adjusted-up/362094/ |title=Tuesday Final Ratings: 'NCIS', 'The Flash', 'Parks and Recreation', 'NCIS: New Orleans', 'Person of Interest' & 'About a Boy' Adjusted Up |last=Kondolojy |first=Amanda |date=February 11, 2015 |work=[[TV by the Numbers]] |access-date=February 11, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150720060020/http://tvbythenumbers.zap2it.com/2015/02/11/tuesday-final-ratings-ncis-the-flash-parks-and-recreation-ncis-new-orleans-person-of-interest-about-a-boy-adjusted-up/362094/ |archive-date=July 20, 2015 }}</ref>
| ShortSummary    = The team attempts to track Stein's whereabouts after he attacks a scientist. They convince Stein into coming back to S.T.A.R. Labs for testing. Wells discovers that Ronnie and Stein's atoms are in conflict, and if it continues they will become [[Nuclear explosion|nuclear]]. Stein leaves for a secluded location to safely explode without casualties. Barry and Caitlin arrive and use a device Wells made from the tachyon to separate the bodies, but it apparently does not work, and the duo escapes the explosion, which alerts Eiling, who orders a team to recover "Firestorm". Meanwhile, Joe enlists Cisco's help to identify Nora's murderer. The duo searches the house and finds blood from two people behind some new wallpaper. Joe asks Cisco to compare the blood to Wells'. Cisco runs the blood and informs Joe that while neither is from Wells, one is from an adult Barry. In the meantime Linda believes Barry to be still in love with Iris, but he proves to Linda that he now loves her not Iris.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 14
| EpisodeNumber2  = 14
| Title           = Fallout
| DirectedBy      = [[Stephen Surjik|Steve Surjik]]
| WrittenBy       = [[Keto Shimizu]] & Ben Sokolowski
| OriginalAirDate = {{Start date|2015|2|17}}
| ProdCode        = 3J5364
| Viewers         = 4.01<ref name="1.14">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/02/19/tuesday-final-ratings-the-flash-supernatural-adjusted-down/365097/ |title=Tuesday Final Ratings: 'The Flash' & 'NCIS' Adjusted Up; 'Supernatural' Adjusted Down |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=February 19, 2015 |access-date=February 19, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150731001855/http://tvbythenumbers.zap2it.com/2015/02/19/tuesday-final-ratings-the-flash-supernatural-adjusted-down/365097/ |archive-date=July 31, 2015 }}</ref>
| ShortSummary    = Barry and Caitlin find Ronnie and Stein alive and separated, which Eiling also finds out. Joe reveals his findings to Barry. Ronnie and Stein realize that their minds are partially connected. Wells visits Eiling, who reveals that he knows Barry's alter ego and demands the F.I.R.E.S.T.O.R.M. project. Wells gives up Stein, who is tortured by Eiling until Barry and Ronnie save him. Ronnie and Stein reunite by the tachyon piece to survive the military onslaught. The duo gains enough control to be able to merge and separate on command. They decide to leave Central City to stay ahead of Eiling and learn more about their new powers. Meanwhile, Iris's colleague, Mason Bridge tells her his belief that Wells deliberately caused the S.T.A.R. Labs explosion. Iris suspects Caitlin's activities and decides to help Mason with his investigation. Barry tells Joe that he will travel back in time again to save Nora from the Reverse-Flash, but intends to succeed by learning the mistakes in his previous attempt. As the Reverse-Flash, Wells kidnaps Eiling and brings him to the sewers. Wells reveals himself to Eiling, and allows Grodd, who is displaying psychic abilities, to drag Eiling deeper into the sewer.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 15
| EpisodeNumber2  = 15
| Title           = Out of Time
| DirectedBy      = [[Thor Freudenthal]]
| WrittenBy       = Todd Helbing & Aaron Helbing
| OriginalAirDate = {{Start date|2015|3|17}}
| ProdCode        = 3J5365
| Viewers         = 3.69<ref name="1.15">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/03/18/tuesday-final-ratings-the-flash-izombie-adjusted-down/376561/ |title=Tuesday Final Ratings: 'The Flash' & 'The Voice' Adjusted Up; 'iZombie' Adjusted Down |last=Bibel |first=Sara |date=March 18, 2015 |access-date=March 18, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150323030202/http://tvbythenumbers.zap2it.com/2015/03/18/tuesday-final-ratings-the-flash-izombie-adjusted-down/376561/ |archive-date=March 23, 2015 }}</ref>
| ShortSummary    = [[Mark Mardon (Arrowverse)|Mark Mardon]], Clyde's brother, returns to Central City to avenge Clyde's death. Eddie and Linda get jealous of the intimacy between Barry and Iris. Mason shares his knowledge that Wells killed Stagg with Iris and Barry, who tells Caitlin and Cisco, who begins to believe Joe was right about Wells, so he rechecks the containment field that failed to hold the Reverse-Flash. Wells arrives and reveals himself to be [[Eobard Thawne (Arrowverse)|Eobard Thawne]], a relative of Eddie's and a man from the future who came back in time to kill Barry, and has since been stranded in the present day. Thawne also explains that he is pushing Barry to get stronger so that he can use Barry's powers to return to his time, and he murders Cisco to protect his secret. Mardon kidnaps Joe and forces him to watch as Mardon creates a [[tsunami]] in order to kill Iris. Barry reveals his secret identity to Iris, just after they admit to romantic feelings for each other, in order to save the city. Barry runs back and forth across the coastline to create a barrier against the tsunami, but he runs so fast that he travels back in time to the day before.
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}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 16
| EpisodeNumber2  = 16
| Title           = Rogue Time
| DirectedBy      = [[John Behring]]
| WrittenBy       = {{StoryTeleplay|s=Grainne Godfree|t=Brooke Eikmeier & Kai Yu Wu}}
| OriginalAirDate = {{Start date|2015|3|24}}
| ProdCode        = 3J5366
| Viewers         = 3.33<ref name="1.16">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/03/25/tuesday-final-ratings-the-voice-the-flash-ncis-new-orleans-adjusted-down/ |title=Tuesday Final Ratings: 'The Voice', 'The Flash', & 'The Mindy Project' Adjusted Up; 'NCIS: New Orleans' Adjusted Down |last=Kondolojy |first=Amanda |work=[[TV by the Numbers]] |date=March 25, 2015 |access-date=March 25, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150405233809/http://tvbythenumbers.zap2it.com/2015/03/25/tuesday-final-ratings-the-voice-the-flash-ncis-new-orleans-adjusted-down/ |archive-date=April 5, 2015 }}</ref>
| ShortSummary    = Thawne warns Barry not to change any event for fear that he will create a bigger problem. Barry does not listen and instead captures Mardon and puts him in the particle accelerator. Snart and Rory return to Central City. Snart sends his sister, Lisa after Cisco, whom they force to rebuild the cold and heat guns, and a third gun shooting gold for Lisa, by threatening to kill Cisco's brother. Iris rejects Barry's romantic approach and later Eddie punches him. Barry realizes that Thawne was right about not to manipulate the [[timeline]]. Cisco returns and reveals that Snart forced him to reveal the Flash's true identity. Barry goes after Snart, and the two come to a truce: Snart will not reveal Barry's identity, will no longer kill innocent people, and stay away from Barry's loved ones in exchange for Barry not locking him away in the particle accelerator. Caitlin tells Eddie and Iris that Barry is suffering from [[psychosis]] as a result of the lightning, making the duo reconcile with him and settling the tension. The Reverse-Flash kills Mason and destroys the evidence linking Thawne to Stagg's death. Mason's vanishing causes Barry to accept Joe was right about "Wells".
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 17
| EpisodeNumber2  = 17
| Title           = Tricksters
| DirectedBy      = Ralph Hemecker
| WrittenBy       = Andrew Kreisberg
| OriginalAirDate = {{Start date|2015|3|31}}
| ProdCode        = 3J5367
| Viewers         = 3.67<ref name="1.17">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/04/01/tuesday-final-ratings-the-flash-forever-ncis-adjusted-up/ |title=Tuesday Final Ratings: 'The Flash', 'Forever' & 'NCIS' Adjusted Up |last=Bibel |first=Sara |date=April 1, 2015 |access-date=April 1, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150402184946/http://tvbythenumbers.zap2it.com/2015/04/01/tuesday-final-ratings-the-flash-forever-ncis-adjusted-up/ |archive-date=April 2, 2015 }}</ref>
| ShortSummary    = Barry and Joe go after terrorist [[Axel Walker (Arrowverse)|Axel Walker]], under the alias Trickster. Walker sets a diversion for the Flash and breaks [[James Jesse (Arrowverse)|James Jesse]], the original Trickster from 20 years prior, out of prison. Jesse and Walker attempt to extort patrons of fundraiser by poisoning them and ransoming the antidote. When the Flash arrives, Jesse and Walker fit him with a bomb that will detonate if he stops moving. Thawne coaches Barry on how to vibrate his molecules so that he can phase through objects, which removes the bomb. Afterward, Barry provides an antidote to all the patrons before capturing Jasse and Walker. The Flash reveals his identity to Eddie and convinces him to keep Iris from investigating Mason's disappearance. Barry tells Eddie and Joe that "Wells" is the Reverse-Flash. In flashbacks, after failing to kill Barry, the Reverse-Flash escapes only to lose his speed. Gideon informs him that traveling through time has drained his powers. Thawne kills Harrison Wells and steals his appearance and identity so he can develop the particle accelerator sooner and return to his timeline.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 18
| EpisodeNumber2  = 18
| Title           = All Star Team Up
| DirectedBy      = [[Kevin Tancharoen]]
| WrittenBy       = Grainne Godfree & Kai Yu Wu
| OriginalAirDate = {{Start date|2015|4|14}}
| ProdCode        = 3J5368
| Viewers         = 3.67<ref name="1.18">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/04/15/tuesday-final-ratings-the-flash-ncis-the-voice-fresh-off-the-boat-hells-kitchen-person-of-interest-adjusted-up/389451/ |title=Tuesday Final Ratings: 'The Flash', 'NCIS', 'The Voice', 'Fresh Off The Boat', 'Hell's Kitchen' & 'Person of Interest' Adjusted Up |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=April 15, 2015 |access-date=April 15, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150418161642/http://tvbythenumbers.zap2it.com/2015/04/15/tuesday-final-ratings-the-flash-ncis-the-voice-fresh-off-the-boat-hells-kitchen-person-of-interest-adjusted-up/389451/ |archive-date=April 18, 2015 }}</ref>
| ShortSummary    = As Barry works in conjunction with Joe and Eddie to stop crimes across the city, an engineering professor is killed by a swarm of bees at a university. While the team searches for a metahuman that can control bees, Felicity arrives with [[Ray Palmer (Arrowverse)|Ray Palmer]], looking for assistance to improve his A.T.O.M. suit. The team tracks another bee attack, but Barry is too late and is attacked by the swarm. The team captures one of the bees, which turns out to be a robot and their suspect just a scientist from Mercury Labs named [[Brie Larvan]], who is targeting other former employees. During the next bee attack, Barry goes after Larvan while Ray attempts to stop the bees from killing [[Tina McGee (Arrowverse)|Dr. Tina McGee]]. Felicity disables the robots, and Barry captures Larvan. Tina tells Barry that "Wells" personality changed after his wife's demise. Iris threatens Eddie to break up if he does not share his secret. Barry informs Caitlin and Cisco about "Wells". She does not want believe it, but Cisco does, revealing that he has been having "dreams", which show his final moments with Thawne in the alternate timeline.
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}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 19
| EpisodeNumber2  = 19
| Title           = Who Is Harrison Wells? <!-- See discussion on the talk page before changing --> <!-- no idea what this is about, but there is no discussion (at all, about anything) on the talk page. -->
| DirectedBy      = [[Wendey Stanzler]]
| WrittenBy       = Ray Utarnachitt & Cortney Norris
| OriginalAirDate = {{Start date|2015|4|21}}
| ProdCode        = 3J5369
| Viewers         = 3.75<ref name="1.19">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/04/22/tuesday-final-ratings-the-flash-marvels-agents-of-s-h-i-e-l-d-undateable-the-voice-izombie-adjusted-down/ |title=Tuesday Final Ratings: 'The Flash', 'Marvel's Agents of S.H.I.E.L.D.', 'Undateable', 'The Voice' & 'Hell's Kitchen' Adjusted Up; 'iZombie' Adjusted Down |last=Kondolojy |first=Amanda |work=[[TV by the Numbers]] |date=April 22, 2015 |access-date=April 22, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150615142637/http://tvbythenumbers.zap2it.com/2015/04/22/tuesday-final-ratings-the-flash-marvels-agents-of-s-h-i-e-l-d-undateable-the-voice-izombie-adjusted-down/ |archive-date=June 15, 2015 }}</ref>
| ShortSummary    = Barry and Eddie track a metahuman named [[Hannibal Bates (Arrowverse)|Hannibal Bates]], who can shape-shift into anyone he touches. Bates takes Eddie's shape and frames him for murder. Later, Bates knocks Barry unconscious and assumes his form, but Thawne realizes the truth and prevents Bates from killing Caitlin and Iris. Bates manages to escape. Caitlin develops a serum to suppress Bates' power, allowing Barry to defeat him and clear Eddie's name. Iris reconciles with Eddie, who reveals his cooperation with the Flash. Bates is locked in the particle accelerator. Meanwhile, Joe and Cisco decide to investigate the car accident scene in [[Starling City]] where [[Tess Morgan|Wells' wife]] died. With the help of [[Quentin Lance|Captain Quentin Lance]], Cisco and Joe locate a buried corpse near the crash site. Cisco also modifies a sonic device for [[Laurel Lance (Arrowverse)|Laurel]]. Joe advises Quentin to reconcile with her. After a series of tests confirm the corpse is the real Wells, Barry, Caitlin and Cisco locate Thawne's secret room at S.T.A.R. Labs. They find both the Reverse-Flash's costume and the newspaper article from 2024.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 20
| EpisodeNumber2  = 20
| Title           = The Trap
| DirectedBy      = [[Steve Shill]]
| WrittenBy       = Alison Schapker & Brooke Eikmeier
| OriginalAirDate = {{Start date|2015|4|28}}
| ProdCode        = 3J5370
| Viewers         = 3.93<ref name="1.20">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/04/29/tuesday-final-ratings-marvels-agents-of-s-h-i-e-l-d-the-voice-ncis-ncis-new-orleans-one-big-happy-adjusted-down/396400/ |title=Tuesday Final Ratings: 'Marvel's Agents of S.H.I.E.L.D.', 'The Voice', 'NCIS', 'NCIS: New Orleans', & 'Chicago Fire' Adjusted Up; 'One Big Happy' Adjusted Down |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=April 29, 2015 |access-date=April 29, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150430232310/http://tvbythenumbers.zap2it.com/2015/04/29/tuesday-final-ratings-marvels-agents-of-s-h-i-e-l-d-the-voice-ncis-ncis-new-orleans-one-big-happy-adjusted-down/396400/ |archive-date=April 30, 2015 }}</ref>
| ShortSummary    = Barry talks to Gideon and learns about his battle with the Reverse-Flash in the future, as well as key moments in his life that include marrying Iris, a promotion at the CCPD, and the creation of Gideon. With high-tech goggles, the team reawakens Cisco's memories of his alternate-timeline death and the secrets Wells confessed. The team regroups at Joe's house, where Barry reveals his recent time travel and explains his plan to lure Thawne to confess to killing Nora. To trap Thawne, Cisco reverses the polarity of his containment field to protect himself, while Caitlin films the interaction to capture Thawne's confession. The trap fails, but Joe shoots Thawne before he can kill Cisco. As Thawne dies, his body transforms into Hannibal Bates. Thawne himself calls the team, revealing that he was always aware of their actions because he had them under surveillance. Reverse-Flash goes after Iris, but Barry arrives, forcing Thawne to kidnap Eddie instead. Iris finds out about the Flash's identity. Thawne reveals his relation to Eddie. Flashbacks reveal the aftermath of Barry being struck by lightning, and Thawne convincing Joe to let him save Barry's life, and promising to a comatose Barry that he will die.
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}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 21
| EpisodeNumber2  = 21
| Title           = Grodd Lives
| DirectedBy      = Dermott Downs
| WrittenBy       = Grainne Godfree & Kai Yu Wu
| OriginalAirDate = {{Start date|2015|5|5}}
| ProdCode        = 3J5371
| Viewers         = 3.62<ref name="1.21">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/05/06/tuesday-final-ratings-the-voice-adjusted-up-izombie-adjusted-down-no-adjustment-for-the-flash-or-person-of-interest/ |title=Tuesday Final Ratings: 'The Voice' Adjusted Up; 'iZombie' Adjusted Down + No Adjustment for 'The Flash' or 'Person of Interest' |last=Kondolojy |first=Amanda |work=[[TV by the Numbers]] |date=May 6, 2015 |access-date=May 6, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150518082037/http://tvbythenumbers.zap2it.com/2015/05/06/tuesday-final-ratings-the-voice-adjusted-up-izombie-adjusted-down-no-adjustment-for-the-flash-or-person-of-interest/ |archive-date=May 18, 2015 }}</ref>
| ShortSummary    = While looking for Eddie and Eobard, Barry confronts a would-be thief at the gold reserve, before being disoriented by an unknown psychological attack. Back at S.T.A.R. Labs, Iris confronts Barry about being the Flash. He is able to stop the thief, who turns out to be Eiling, mind-controlled by Grodd. With a lead from Iris, Barry, Joe and Cisco head into the sewers to look for Grodd. The trio realize that Grodd is getting smarter and larger, and during an attack, Joe is kidnapped by Grodd. Cisco and Caitlin build Barry a device that will prevent Grodd's effect. The device works, but gets damaged in a fight. Barry is able to fight off Grodd's psychic attack and trick him into jumping in front of an on-coming train. Eiling is freed. Iris reveals her feelings for Barry, but states her choice to be with Eddie. Grodd is revealed to be alive and roaming the streets. Meanwhile, Thawne works on a device that will allow him to return to his own time. He reveals to Eddie, Iris and Barry's marriage in the future. Later Thawne completes the device and is revealed to be hiding in a secret chamber inside S.T.A.R. Labs.
| LineColor       = 97B5CC
}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 22
| EpisodeNumber2  = 22
| Title           = Rogue Air
| DirectedBy      = [[Doug Aarniokoski]]
| WrittenBy       = Aaron Helbing & Todd Helbing
| OriginalAirDate = {{Start date|2015|5|12}}
| ProdCode        = 3J5372
| Viewers         = 3.65<ref name="1.22">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/05/13/tuesday-final-ratings-the-flash-ncis-izombie-adjusted-down/ |title=Tuesday Final Ratings: 'The Flash', 'NCIS', & 'American Idol' Adjusted Up; 'iZombie' Adjusted Down |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=May 13, 2015 |access-date=May 13, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150518090618/http://tvbythenumbers.zap2it.com/2015/05/13/tuesday-final-ratings-the-flash-ncis-izombie-adjusted-down/ |archive-date=May 18, 2015 }}</ref>
| ShortSummary    = Cisco discovers that Eobard has been supercharging his speed through his wheelchair, which is why he is so much faster than Barry. The particle accelerator is activated by Eobard, who has managed to repair it. The team is able to find and rescue Eddie, who ends his relationship with Iris. Worried that the metahumans imprisoned inside the particle accelerator will be killed when it reaches full power, the team plans to relocate them to Oliver's prison on Lian Yu. In order to set up a safe transport, Barry requests Leonard's help. Leonard agrees but only after Barry erases all of Leonard's criminal record. Leonard and Lisa sabotage the transport and allow the metahumans to escape, killing [[Jake Simmons (Arrowverse)|Jake Simmons]] however. Eobard arrives back at the lab just as the accelerator fully charges. Barry, Firestorm and Oliver all meet outside to fight Reverse-Flash. They coordinate their efforts; Oliver stops him with a nanite injection that disables Eobard's speed and knocks him out. Oliver leaves after informing Barry of an upcoming help request.
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}}
{{Episode list/sublist|The Flash season 1
| EpisodeNumber   = 23
| EpisodeNumber2  = 23
| Title           = Fast Enough
| DirectedBy      = Dermott Downs
| WrittenBy       = {{StoryTeleplay|s=Greg Berlanti & Andrew Kreisberg|t=[[Gabrielle Stanton]] & Andrew Kreisberg}}
| OriginalAirDate = {{Start date|2015|5|19}}
| ProdCode        = 3J5373
| Viewers         = 3.87<ref name="1.23">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/05/20/tuesday-final-ratings-the-flash-the-voice-izombie-adjusted-down/406407/ |title=Tuesday Final Ratings: 'The Flash', 'The Voice' & 'Hell's Kitchen' Adjusted Up; 'iZombie' Adjusted Down |last=Kondolojy |first=Amanda |work=[[TV by the Numbers]] |date=May 20, 2015 |access-date=May 20, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150521113950/http://tvbythenumbers.zap2it.com/2015/05/20/tuesday-final-ratings-the-flash-the-voice-izombie-adjusted-down/406407/ |archive-date=May 21, 2015 }}</ref>
| ShortSummary    = Barry visits Thawne in the particle accelerator prison, where Thawne reveals he killed Nora because of hating the Flash, whose future self saved him. Eobard requests Barry to help create a [[wormhole]] where Thawne can return to his time, while also allowing Barry to save Nora. Caitlin and Ronnie get married. Eobard tells Cisco that the latter's ability to recall events of alternate timelines was acquired from the particle accelerator explosion. Barry decides to go through with Thawne's offer. The latter states that Barry will have only a short time, or else the wormhole will become a [[black hole]]. Barry travels back in time, but his future self signals him not to save Nora. The present Barry returns and stops Thawne from returning to his time. The two fight, while the team shuts down the wormhole. Thawne eventually prevails, but before he can kill Barry, Eddie shoots himself, causing Thawne's existence to cease. The wormhole reappears, and the team is unable to prevent it from becoming a black hole. As the black hole begins to tear the city apart, pulling Eddie inside, Barry speeds into it in an effort to stop it.
| LineColor       = 97B5CC
}}
}}</onlyinclude>

==Cast and characters==
{{main|List of The Flash characters}}
{{Columns-start|num=2}}

=== Main ===
* [[Grant Gustin]] as [[Barry Allen (Arrowverse)|Barry Allen / Flash]]<ref name="Gustin" /> 
* [[Candice Patton]] as [[Iris West-Allen (Arrowverse)|Iris West]]<ref name="Patton" /> 
* [[Danielle Panabaker]] as [[Caitlin Snow (Arrowverse)|Caitlin Snow]]<ref name="Cosnett/Panabaker" /> 
* [[Rick Cosnett]] as [[Eddie Thawne]]<ref name="Cosnett/Panabaker" />
* [[Carlos Valdes (actor)|Carlos Valdes]] as [[Cisco Ramon (Arrowverse)|Cisco Ramon]]<ref name="Valdes" /> 
* [[Tom Cavanagh]] as [[Harrison Wells]] / [[Eobard Thawne (Arrowverse)|Reverse-Flash]]<ref name="Cavanagh" />{{efn|Cavanagh portrays [[Eobard Thawne]]'s disguise primarily and [[Harrison Wells]] (Earth-1) in a less prominent capacity.}}
* [[Jesse L. Martin]] as [[Joe West (Arrowverse)|Joe West]]<ref name="Martin" /> 
{{column}}

===Recurring===
<!-- The following all appear in 4 or more episode across the season, defined for this series as recurring. -->
* [[Robbie Amell]] as [[Ronnie Raymond (Arrowverse)|Ronnie Raymond / Firestorm]]<ref name="Firestorm"/>
* [[Clancy Brown]] as [[General Wade Eiling (Arrowverse)|General Wade Eiling]]<ref name="Brown"/>
* [[Victor Garber]] as [[Martin Stein (Arrowverse)|Martin Stein / Firestorm]]<ref name="Garber"/>
* Michelle Harrison as [[Nora Allen (Arrowverse)|Nora Allen]]<ref name="Harrison"/>
* [[Roger Howarth]] as [[Mason Bridge]]<ref name="Howarth"/>
* [[Malese Jow]] as [[Linda Park (Arrowverse)|Linda Park]]<ref name="Jow"/>
* [[Wentworth Miller]] as [[Leonard Snart (Arrowverse)|Leonard Snart / Captain Cold]]<ref name="Miller"/>
* [[Patrick Sabongui]] as [[David Singh (Arrowverse)|David Singh]]<ref name="Sabongui"/>
* [[John Wesley Shipp]] as [[Henry Allen (Arrowverse)|Henry Allen]]<ref name="Shipp"/>
{{Columns-end}}

===Guest===
{{columns-list|colwidth=30em|
* <!-- 101 -->Chad Rook as [[Clyde Mardon (Arrowverse)|Clyde Mardon]]<ref name="Rook"/>
* <!-- 101 -->[[Stephen Amell]] as [[Oliver Queen (Arrowverse)|Oliver Queen / Arrow]]<ref name="AmellPilot"/>
* <!-- 102 -->Michael Christopher Smith as [[Danton Black (Arrowverse)|Danton Black / Multiplex]]<ref name="Multiplex"/>
* <!-- 102 -->[[William Sadler (actor)|William Sadler]] as [[Simon Stagg (Arrowverse)|Simon Stagg]]<ref name="Stagg"/>
* <!-- 103 -->[[Anthony Carrigan (actor)|Anthony Carrigan]] as [[Kyle Nimbus (Arrowverse)|Kyle Nimbus / Mist]]<ref name="Carrigan"/>
* <!-- 104 -->[[Emily Bett Rickards]] as [[Felicity Smoak (Arrowverse)|Felicity Smoak]]<ref name="Rickards"/>
* <!-- 104 -->[[Greg Finley]] as [[Tony Woodward (Arrowverse)|Tony Woodward / Girder]]<ref name="Finley"/>
* <!-- 105 -->[[Kelly Frye]] as [[Bette Sans Souci (Arrowverse)|Bette Sans Souci / Plastique]]<ref name="Frye"/>
* <!-- 106 -->[[Nicholas Gonzalez]] as [[Dante Ramon (Arrowverse)|Dante Ramon]]<ref name="Gonzalez"/>
* <!-- 107 -->Michael Reventar as [[Farooq Gibran|Farooq Gibran / Blackout]]<ref name="Reventar"/>
* <!-- 107 -->[[Morena Baccarin]] as the voice of [[Gideon (The Flash)|Gideon]]<ref name="Baccarin"/>
* <!-- 107 -->[[Robert Knepper]] as [[William Tockman (Arrowverse)|William Tockman / Clock King]]<ref name="Knepper"/>
* <!-- 108 -->Paul Anthony as [[Roy G. Bivolo (Arrowverse)|Roy Bivolo / Rainbow Raider]]<ref name="Anthony"/>
* <!-- 108 -->[[Anna Hopkins]] as [[Samantha Clayton]]<ref name="Hopkins"/>
* <!-- 108 -->[[David Ramsey]] as [[John Diggle (Arrowverse)|John Diggle / Spartan]]<ref name="Ramsey"/>
* <!-- 109 -->[[Amanda Pays]] as [[Tina McGee (Arrowverse)|Tina McGee]]<ref name="Pays"/>
* <!-- 110 -->Luc Roderique as [[Jason Rusch (Arrowverse)|Jason Rusch]]<ref name="Roderique"/>
* <!-- 110 -->[[Dominic Purcell]] as [[Mick Rory (Arrowverse)|Mick Rory / Heat Wave]]<ref name="Purcell"/>
* <!-- 111 -->[[Andy Mientus]] as [[Hartley Rathaway (Arrowverse)|Hartley Rathaway / Pied Piper]]<ref name="Mientus"/>
* <!-- 112 -->[[Britne Oldford]] as [[Shawna Baez|Shawna Baez / Peek-a-Boo]]<ref name="Oldford"/>
* <!-- 113 -->[[Isabella Hofmann]] as [[Clarissa Stein (Arrowverse)|Clarissa Stein]]<ref name="Hofmann"/>
* <!-- 114 -->[[David Sobolov]] as the voice of [[Gorilla Grodd (Arrowverse)|Grodd]]<ref name="Grodd"/>
* <!-- 115 -->[[Liam McIntyre]] as [[Mark Mardon (Arrowverse)|Mark Mardon / Weather Wizard]]<ref name="McIntyre"/>
* <!-- 116 -->[[Peyton List (actress, born 1986)|Peyton List]] as [[Lisa Snart (Arrowverse)|Lisa Snart / Golden Glider]]<ref name="List"/>
* <!-- 117 -->[[Bre Blair]] as [[Tess Morgan]]<ref name="Blair"/>
* <!-- 117 -->[[Devon Graye]] as [[Axel Walker (Arrowverse)|Axel Walker / Trickster]]<ref name="Graye"/>
* <!-- 117 -->[[Mark Hamill]] as [[James Jesse (Arrowverse)|James Jesse / Trickster]]<ref name="Hamill"/>
* <!-- 117 -->Anthony Harrison as Warden [[Gregory Wolfe (Arrowverse)|Gregory Wolfe]]
* <!-- 117 -->[[Matt Letscher]] as [[Eobard Thawne (Arrowverse)|Eobard Thawne]]<ref name="Letscher"/>
* <!-- 117 -->Vito D'Ambrosio as [[Mayor Anthony Bellows]]<ref name="D'Ambrosio"/>
* <!-- 118 -->[[Brandon Routh]] as [[Ray Palmer (Arrowverse)|Ray Palmer / Atom]]<ref name="Palmer"/>
* <!-- 118 -->[[Emily Kinney]] as [[Brie Larvan|Brie Larvan / Bug-Eyed Bandit]]<ref name="Kinney"/>
* <!-- 119 -->Martin Novotny as [[Hannibal Bates (Arrowverse)|Hannibal Bates / Everyman]]<ref name="ep119"/>
* <!-- 119 -->[[Katie Cassidy]] as [[Laurel Lance (Arrowverse)|Laurel Lance / Black Canary]]<ref name="ep119"/>
* <!-- 119 -->[[Paul Blackthorne]] as [[Quentin Lance]]<ref name="ep119"/>
* <!-- 122 -->[[Doug Jones (actor)|Doug Jones]] as [[Jake Simmons (Arrowverse)|Jake Simmons / Deathbolt]]<ref name="JonesFlash"/>
* <!-- 123 -->[[Ciara Renée]] as [[Kendra Saunders (Arrowverse)|Kendra Saunders]]<ref name="Renee"/>
}}

==Production==
===Development===
On July 30, 2013, it was announced that ''[[Arrow (TV series)|Arrow]]'' co-creators [[Greg Berlanti]] and [[Andrew Kreisberg]], ''Arrow'' pilot director [[David Nutter]], and DC Comics CCO [[Geoff Johns]] would develop a television series based on the Flash for [[The CW]], and it would detail Barry Allen's origin.<ref name="DeadlineAnnouncement">{{cite web|url=https://deadline.com/2013/07/cw-eyes-flash-series-with-arrows-greg-berlanti-andrew-kreisberg-david-nutter/ |title=CW Eyes 'Flash' Series With 'Arrow's Greg Berlanti, Andrew Kreisberg & David Nutter |last=Andreeva |first=Nellie |website=[[Deadline Hollywood]] |date=July 30, 2013 |access-date=July 30, 2013 |url-status=live |archive-url=https://web.archive.org/web/20130801015113/http://www.deadline.com/2013/07/cw-eyes-flash-series-with-arrows-greg-berlanti-andrew-kreisberg-david-nutter/ |archive-date=August 1, 2013 }}</ref> Kreisberg revealed after the announcement that Allen would first appear as a recurring character on ''[[Arrow (TV series)|Arrow]]'' in three episodes of season two—all written by Berlanti, Kreisberg and Johns—and the last of the episodes would act as a [[backdoor pilot]] for the new show. Kreisberg added that Allen would be a forensic scientist and the introduction of his superpowers, as well as the reactions to this, will be very human and grounded. Johns stated that the character of the Flash in the show would resemble his comic book counterpart, complete with his trademark red costume, and not be a poor imitation. Kreisberg elaborated: "No sweat suits or strange code names; he ''will be'' The Flash." While researching the best way to depict the Flash's lightning speed, Johns stated it would not just be the standard "blurring around".<ref name="THRJuly2013">{{cite magazine|url=https://hollywoodreporter.com/live-feed/flash-writers-preview-cws-newest-595705 |title='Flash' Writers Preview the CW's Newest Superhero |last=Goldberg |first=Lesley |magazine=[[The Hollywood Reporter]] |date=July 30, 2013 |access-date=July 30, 2013 |url-status=live |archive-url=https://web.archive.org/web/20130801185107/http://www.hollywoodreporter.com/live-feed/flash-writers-preview-cws-newest-595705 |archive-date=August 1, 2013 }}</ref>

Barry ultimately appeared twice in ''Arrow''{{'}}s second season, with the planned backdoor pilot canceled in favor of a traditional pilot by The CW executives, who had been impressed by early cuts of Barry's first two episodes on ''Arrow''. This allowed the creative team to flesh out Barry's story and his world on a bigger budget, as opposed to a backdoor pilot's constraint of incorporating characters from the parent show. The pilot was officially ordered on January 29, 2014, and was written by Berlanti, Kreisberg, and Johns, and directed by Nutter.<ref name="DeadlinePilot">{{cite web|url=https://www.deadline.com/2013/11/cws-the-flash-to-do-standalone-pilot-instead-of-arrow-backdoor-pilot-episode/ |title=CW's 'The Flash' To Do Stand-Alone Pilot Instead Of 'Arrow' Backdoor Pilot Episode |last=Andreeva |first=Nellie |date=November 18, 2013 |access-date=November 18, 2013 |url-status=live |archive-url=https://web.archive.org/web/20131119211413/http://www.deadline.com/2013/11/cws-the-flash-to-do-standalone-pilot-instead-of-arrow-backdoor-pilot-episode/ |archive-date=November 19, 2013 }}</ref><ref name="PilotOrdered">{{cite magazine|last=Goldberg |first=Lesley |title='Supernatural' Spinoff, Rob Thomas' 'iZombie,' 'Flash' Ordered to Pilot at CW |url=https://www.hollywoodreporter.com/live-feed/supernatural-spinoff-rob-thomas-izombie-675484 |magazine=[[The Hollywood Reporter]] |date=January 29, 2014 |access-date=January 29, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140301182716/http://www.hollywoodreporter.com/live-feed/supernatural-spinoff-rob-thomas-izombie-675484 |archive-date=March 1, 2014 }}</ref> On May 8, 2014, ''The Flash'' was officially picked up as a series, with an initial order of 13 episodes.<ref name="PickUp">{{cite web|url=http://tvline.com/2014/05/08/the-cw-new-series-fall-2014-the-flash/ |title=Fall TV Scoop: The CW Orders Four Dramas, Including Flash, iZombie and Jane the Virgin, Passes on Supernatural Spin-Off |last=Ausiello |first=Michael |website=[[TVLine]] |date=May 8, 2014 |access-date=May 8, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140508223350/http://tvline.com/2014/05/08/the-cw-new-series-fall-2014-the-flash/ |archive-date=May 8, 2014 }}</ref> Three more scripts were ordered in September 2014 following a positive response to newly completed episodes by executives,<ref name="Deadline3">{{cite web|url=https://deadline.com/2014/09/the-flash-jane-the-virgin-additional-scripts-cw-838768/ |title=CW's 'The Flash' & 'Jane The Virgin' Get Backup Script Orders Ahead Of Premieres |work=[[Deadline Hollywood]] |date=September 23, 2014 |access-date=September 24, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140925082725/http://deadline.com/2014/09/the-flash-jane-the-virgin-additional-scripts-cw-838768/ |archive-date=September 25, 2014 }}</ref> while a back ten was ordered on October 21, 2014, for a full 23-episode season.<ref name="S1SeasonOrder">{{cite magazine|url=http://insidetv.ew.com/2014/10/21/the-flash-full-season/ |title='The Flash' gets full season ('Jane the Virgin' too) |last=Hibberd |first=James |magazine=[[Entertainment Weekly]] |date=October 21, 2014 |access-date=October 21, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141022000218/http://insidetv.ew.com/2014/10/21/the-flash-full-season/ |archive-date=October 22, 2014 }}</ref>

In July 2014, Johns described the series as "the most faithful DC Comics adaptation ever... We've incorporated almost everything of the mythology into it and added a new backstory with [[S.T.A.R. Labs]]."<ref>{{cite web|url=https://www.tvguide.com/News/Flash-Wentworth-Miller-Arrow-Crossovers-1084633.aspx |title=The Flash Casts Wentworth Miller, Plots Arrow Crossovers |last=Abram |first=Natalie |work=TV Guide |date=July 18, 2014 |access-date=July 18, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140720034146/http://www.tvguide.com/News/Flash-Wentworth-Miller-Arrow-Crossovers-1084633.aspx |archive-date=July 20, 2014 }}</ref> In October 2014, Johns explained that DC's approach to their films and television series would be different from [[Marvel Studios]]' [[Marvel Cinematic Universe|cinematic universe]], stating that their [[DC Extended Universe|film universe]] and TV universes would be kept separate within a [[Multiverse (DC Comics)|multiverse]] to allow "everyone to make the best possible product, to tell the best story, to do the best world."<ref>{{cite web|url=https://www.buzzfeed.com/jarettwieselman/the-man-at-the-center-of-dcs-tv-multiverse |title=The Man At The Center Of DC's TV Multiverse |last=Wieselman |first=Jarett |work=BuzzFeed |date=October 23, 2014 |access-date=October 30, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141031105613/http://www.buzzfeed.com/jarettwieselman/the-man-at-the-center-of-dcs-tv-multiverse |archive-date=October 31, 2014 }}</ref>

=== Casting ===
[[File:Grant Gustin at 2015 PaleyFest.jpg|150px|thumb|right|upright|[[Grant Gustin]] stars as Barry Allen / Flash]]
On September 13, 2013, [[Grant Gustin]] was cast in the titular role of [[Barry Allen (Arrowverse)|Barry Allen / Flash]].<ref name="Gustin" /> [[Andy Mientus]], who would eventually be cast as [[Hartley Rathaway (Arrowverse)|Hartley Rathaway]], also auditioned for the role.<ref name="MientusFlashAudition">{{Cite web |url=https://variety.com/2014/tv/news/flash-andy-mientus-gay-pied-piper-1201375260/ |title='The Flash': Andy Mientus Says Gay Villain Pied Piper is a 'Huge Step Forward' |last=Chi |first=Paul |date=December 9, 2014 |website=[[Variety (magazine)|Variety]] |url-status=live |archive-url=https://web.archive.org/web/20141216064959/http://variety.com/2014/tv/news/flash-andy-mientus-gay-pied-piper-1201375260/ |archive-date=December 16, 2014 |access-date=December 17, 2014}}</ref> Gustin began researching the character during the audition process, and reading as many comics as possible. Gustin primarily focused on [[The New 52]] series of comics, because he knew it would be difficult to read everything and he felt the New 52 was the closest to the show's "look and feel".<ref name="AccessHoll">{{Cite web |url=http://www.accesshollywood.com/the-flash-qanda-grant-gustin-talks-taking-on-barry-allen-his-amazing-superhero-suit_article_99383 |title=''The Flash'' Q&A: Grant Gustin Talks Taking On Barry Allen, His Amazing Superhero Suit! |author1=Jolie Lash |author2=Anthony Ramos |date=October 7, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141223061445/http://www.accesshollywood.com/the-flash-qanda-grant-gustin-talks-taking-on-barry-allen-his-amazing-superhero-suit_article_99383 |archive-date=December 23, 2014 |access-date=December 25, 2014}}</ref> In January 2014, actor [[Jesse L. Martin]] was cast as Detective [[Joe West (Arrowverse)|Joe West]],<ref name="Martin" /> while Rick Cosnett was cast as [[Eddie Thawne]] and [[Danielle Panabaker]] as [[Caitlin Snow (Arrowverse)|Caitlin Snow]].<ref name="Cosnett/Panabaker" /> In February 2014, [[Candice Patton]] was cast as [[Iris West (Arrowverse)|Iris West]]<ref name="Patton" /> and Carlos Valdes as [[Cisco Ramon (Arrowverse)|Cisco Ramon]].<ref name="Valdes" /> Patton's casting as Iris caused significant backlash among comic book fans due to Patton being of African descent, while Iris has typically been depicted as a Caucasian woman in comics.<ref>{{Cite web |url=https://screenrant.com/flash-riverdale-casting-racist-backlash/ |title=The Flash & Riverdale Stars Reflect on the Racist Backlash to Their Casting |last=Shaw-Williams |first=Hannah |date=June 30, 2018 |website=[[Screen Rant]] |url-status=live |archive-url=https://web.archive.org/web/20180701074825/https://screenrant.com/flash-riverdale-casting-racist-backlash/ |archive-date=July 1, 2018 |access-date=July 29, 2018}}</ref> Though the writers discussed early on to make Barry and Caitlin lovers, Gustin vetoed this idea in favour of Barry and Iris, as in the comics.<ref>{{cite web |last1=Jeffery |first1=Morgan |title=The Flash star refused one major season 4 plot |url=https://www.digitalspy.com/tv/ustv/a862548/the-flash-danielle-panabaker-refused-caitlin-ralph-romance/ |website=[[Digital Spy]] |access-date=21 June 2020 |archive-url=https://archive.today/20200609061112/https://www.digitalspy.com/tv/ustv/a862548/the-flash-danielle-panabaker-refused-caitlin-ralph-romance/ |archive-date=June 9, 2020 |date=27 July 2018 |url-status=live }}</ref> Also in February 2014, ''[[The Hollywood Reporter]]'' reported that the remaining regular roles to be cast were for the parts of Harrison Wells and Hartley Rathaway.<ref name="RemainingCast">{{Cite web |url=https://www.hollywoodreporter.com/live-feed/cws-flash-adds-broadway-player-677094 |title=The CW's 'Flash' Adds Broadway Player in Super-Smart Role |last=Goldberg |first=Lesley |date=February 4, 2014 |website=[[The Hollywood Reporter]] |url-status=live |archive-url=https://web.archive.org/web/20140312042804/http://www.hollywoodreporter.com/live-feed/cws-flash-adds-broadway-player-677094 |archive-date=March 12, 2014 |access-date=February 4, 2014}}</ref> On February 10, 2014, [[Tom Cavanagh]] was cast as [[Harrison Wells]], with his role described as "a rock star in the world of physics and the mind and money behind Central City's S.T.A.R. Labs Particle Accelerator".<ref name="Cavanagh" /> It was eventually revealed that Cavanagh's character was actually [[Eobard Thawne (Arrowverse)|Eobard Thawne]], who stole the appearance of the real Wells (also portrayed by Cavanagh) after killing him, with [[Matt Letscher]] portraying Thawne's original likeness.<ref name="Letscher" /> Letscher was cast due to his previous collaboration with Kreisberg and Berlanti in the [[American Broadcasting Company|ABC]] television series ''[[Eli Stone]]''.<ref>{{Cite web |last=Lash |first=Jolie |date=January 26, 2014 |title='The Flash': Andrew Kreisberg On The Return Of Reverse-Flash, Jay Garrick's Condition |url=https://www.accessonline.com/articles/flash-andrew-kreisberg-return-reverse-flash-jay-garricks-condition |url-status=live |archive-url=https://web.archive.org/web/20210116014154/https://www.accessonline.com/articles/flash-andrew-kreisberg-return-reverse-flash-jay-garricks-condition |archive-date=January 16, 2021 |access-date=May 21, 2023 |website=Access Online }}</ref>

Several cast members from the [[The Flash (1990 TV series)|1990 television series]] appear in the series. [[John Wesley Shipp]], who portrayed Barry Allen/Flash in the 1990 series, joined the cast in a recurring role as Barry's father, [[Henry Allen (Arrowverse)|Dr. Henry Allen]],<ref name="Shipp" /> and [[Amanda Pays]] once again portrays a character named [[Tina McGee (Arrowverse)|Dr. Tina McGee]].<ref name="Pays" /> In the episode "Tricksters", [[Mark Hamill]] returns as [[James Jesse (Arrowverse)|James Jesse / Trickster]] and [[Vito D'Ambrosio]] plays Mayor [[Anthony Bellows]] (a character he played in 1991, but as a police officer), with images of Hamill as Trickster from the 1990 TV series being used in a police report.<ref name="Hamill" /><ref name="D'Ambrosio" />

===Design===
The Flash costume was designed by [[Colleen Atwood]].<ref>{{Cite web |url=https://nerdist.com/suit-up-with-the-full-flash-costume/ |title=Suit-Up with the Full FLASH Costume |last=Anderson |first=Kyle |date=March 11, 2014 |website=[[Nerdist Industries|Nerdist]] |url-status=live |access-date=July 29, 2018 |archive-url=https://web.archive.org/web/20180621012323/https://nerdist.com/suit-up-with-the-full-flash-costume/ |archive-date=June 21, 2018  }}</ref> While remaining largely faithful to Barry's costume from the comics, it was designed as a more "functional, textured quality" costume than previous live-action Flash ones.<ref>{{Cite web |url=https://www.ign.com/articles/2017/10/03/a-visual-history-of-the-flash |title=A Visual History of The Flash |last=Schedeen |first=Jesse |date=October 3, 2017 |website=[[IGN]] |url-status=live |access-date=July 29, 2018 |archive-url=https://web.archive.org/web/20180219102810/http://www.ign.com/articles/2017/10/03/a-visual-history-of-the-flash |archive-date=February 19, 2018  }}</ref>

===Filming===
Production on the pilot began in March 2014, with filming taking place in [[Vancouver]], [[British Columbia]];<ref>{{cite web |url=http://www.vancitybuzz.com/2014/03/flash-runs-past-vancouver-art-gallery/ |title=Flash Running After Villains in Vancouver (Photos & Videos) |publisher=Vancity Buzz |date=March 2014 |access-date=June 25, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20140621050930/http://www.vancitybuzz.com/2014/03/flash-runs-past-vancouver-art-gallery/ |archive-date=June 21, 2014 }}</ref> additional filming for the series takes place in [[Portland, Oregon]].<ref name="PortlandFilming">{{cite web|url=http://www.oregonlive.com/movies/index.ssf/2014/10/tv_tonight_the_flash_yes_those.html |title=TV Tonight: 'The Flash' (yes, those are Portland bridges); 'Supernatural'; Ken Burns on 'Finding Your Roots' |last=Turnquist |first=Kristi |work=[[The Oregonian]] |date=October 7, 2014 |access-date=November 15, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141129012654/http://www.oregonlive.com/movies/index.ssf/2014/10/tv_tonight_the_flash_yes_those.html |archive-date=November 29, 2014 }}</ref> On how action sequences are shot for the series, compared to ''Arrow'', Gustin said, "When [''Arrow''] shoot(s) action sequences, pretty much what you see is what you get and they're really doing everything. We do a lot of plate shots that are empty shots of the area we're going to be in and then they're putting us in later in [[Post-production|post]]. I do a lot of the fighting. I don't have to do it full speed and then they ramp it up and a lot of people have to freeze and I keep moving. Then I have to clear frame and step back into frame. It's really tedious stuff that we have to do. On theirs, they learn fight choreography and they shoot it from the perfect angles and what you see is what you get."<ref name="FightShooting">{{cite web|url=https://www.ign.com/articles/2014/10/19/stephen-amell-and-grant-gustin-tease-the-flash-arrow-crossover-and-their-big-fight |title=STEPHEN AMELL AND GRANT GUSTIN TEASE THE FLASH / ARROW CROSSOVER AND THEIR BIG FIGHT |last=Goldman |first=Eric |website=[[IGN]] |date=October 19, 2014 |access-date=October 20, 2014 |url-status=live |archive-url=https://web.archive.org/web/20160324101828/http://www.ign.com/articles/2014/10/19/stephen-amell-and-grant-gustin-tease-the-flash-arrow-crossover-and-their-big-fight |archive-date=March 24, 2016 }}</ref>

Filming for the rest of the season began on July 11, 2014, and,<ref name="S1ProductionBegins">{{cite tweet|user=grantgust|author=Grant Gustin|number=487632161689047041|title=First day in the chair. So excited. #TheFlash http://instagram.com/p/qUTTGSgVN2/|access-date=October 29, 2016}}{{dead link|date=March 2021}}</ref> ended on April 14, 2015.<ref name="S1ProductionEnds">{{Cite instagram|postid=1dR0V7gVOG|user=grantgust|title=Verified I just got wrapped on season 1 of The Flash & the sun is up. 👍👍🙌🏃⚡️|date=April 14, 2015|author=Grant Gustin|access-date=March 20, 2021}}</ref>

===Music===
{{See also|Flash vs. Arrow#Music}}

''Arrow'' composer [[Blake Neely]] is the primary composer of the series, and was first hired in April 2014 to score the pilot.<ref>{{cite web|url=http://filmmusicreporter.com/2014/04/10/blake-neely-to-score-the-cws-the-flash/ |title=Blake Neely to Score The CW's 'The Flash' |publisher=Film Music Reporter |date=April 10, 2014 |access-date=August 5, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150925110912/http://filmmusicreporter.com/2014/04/10/blake-neely-to-score-the-cws-the-flash/ |archive-date=September 25, 2015 }}</ref><ref name="Neely">{{cite web|url=https://variety.com/2014/film/news/avengers-star-wars-superman-raiders-1201268736/ |title='Star Wars,' 'Superman' Inspire New 'Avengers' Score |last=Graser |first=Marc |work=[[Variety (magazine)|Variety]] |date=July 24, 2014 |access-date=July 24, 2014 |archive-url=https://web.archive.org/web/20140728074318/http://variety.com/2014/film/news/avengers-star-wars-superman-raiders-1201268736/ |archive-date=July 28, 2014 |url-status=live }}</ref> He had previously composed a theme for Barry Allen which was featured in ''Arrow''{{'}}s [[Arrow season 2|season two]] episodes "The Scientist" and "Three Ghosts". The theme was titled "The Scientist" when it was released on the [[Arrow (TV series)#Music|''Arrow: Season 2'' soundtrack]]. According to Neely, "It had to be different [from ''Arrow''] ... but it also couldn't be so different that it couldn't fit in the ''Arrow'' universe, ... it had to be in a style that could hold hands with ''Arrow''."<ref>{{cite web|last1=Neely |first1=Blake |title=CBR TV: Super Composer Finds "Flash" & "Arrow" Inspiration for "Legends," Makes "Supergirl" Fun |url=http://www.comicbookresources.com/article/cbr-tv-super-composer-finds-flash-arrow-inspiration-for-legends-makes-supergirl-fun |website=[[Comic Book Resources]] |date=September 4, 2015 |access-date=September 14, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150920100039/http://www.comicbookresources.com/article/cbr-tv-super-composer-finds-flash-arrow-inspiration-for-legends-makes-supergirl-fun |archive-date=September 20, 2015 }}</ref> On December 18, 2014, [[WaterTower Music]] released a selection of music from ''The Flash''/''Arrow'' crossover episodes, as well as two bonus tracks from their respective 2014 midseason finales.<ref>{{cite web|url=http://www.watertower-music.com/releases_spotlight.php?search=WTM39625 |title=The Flash vs. Arrow: Music Selections from the Epic 2-Night Event |publisher=[[WaterTower Music]] |access-date=December 19, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141220000519/http://www.watertower-music.com/releases_spotlight.php?search=WTM39625 |archive-date=December 20, 2014 }}</ref> The first season, two-disc soundtrack was released on October 16, 2015, by La La Land Records.<ref>{{cite web|url=http://filmmusicreporter.com/2015/08/12/la-la-land-records-to-release-soundtrack-album-for-the-cws-the-flash/ |title=La-La Land Records to Release Soundtrack Album for The CW's 'The Flash' |publisher=Film Music Reporter |date=August 12, 2015 |access-date=September 14, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150925104507/http://filmmusicreporter.com/2015/08/12/la-la-land-records-to-release-soundtrack-album-for-the-cws-the-flash/ |archive-date=September 25, 2015 }}</ref>

All music composed by Blake Neely.<ref name="MusicS1d1">{{cite web|url=https://itunes.apple.com/us/album/flash-original-television/id1055198781 |title=The Flash (Original Television Soundtrack from Season 1) |publisher=[[iTunes]] |date=November 13, 2015 |access-date=October 22, 2016 |url-status=live |archive-url=https://web.archive.org/web/20160927202357/https://itunes.apple.com/us/album/flash-original-television/id1055198781 |archive-date=September 27, 2016 }}</ref><ref name="MusicS1d2">{{cite web|url=https://www.amazon.com/dp/B013R4QRRA/|title=Blake Neely - The Flash (Soundtrack)|website=Amazon|date=November 6, 2015 |access-date=October 22, 2016}}</ref>

{{Track listing
| headline        = Disc 1
| total_length    = 1:18:13

| title1          = The Fastest Man Alive / Always Late
| length1         = 3:05
| title2          = Best Friends Since Childhood
| length2         = 2:37
| title3          = Metahumans
| length3         = 2:35
| title4          = Dr. Wells Has Secrets
| length4         = 3:03
| title5          = I Have to Try
| length5         = 4:56
| title6          = Proud of You
| length6         = 2:23
| title7          = A Lot Happened That Night
| length7         = 2:28
| title8          = Mad Skills
| length8         = 1:18
| title9          = Eddie and Iris
| length9         = 1:21
| title10         = Birth of The Flash
| length10        = 3:06
| title11         = Things You Can't Outrun
| length11        = 2:25
| title12         = Captain Cold
| length12        = 1:41
| title13         = We Were All Struck by That Lightning
| length13        = 1:15
| title14         = Going Rogue
| length14        = 2:03
| title15         = No Time
| length15        = 2:23
| title16         = Grodd Lives
| length16        = 1:36
| title17         = Impossible Thing
| length17        = 3:05
| title18         = Supersonic
| length18        = 2:03
| title19         = Catch Me If You Can
| length19        = 2:33
| title20         = Martin Stein and Firestorm
| length20        = 3:22
| title21         = Fate of My Dad
| length21        = 2:08
| title22         = The Nuclear Man
| length22        = 3:16
| title23         = Dead to Me
| length23        = 3:20
| title24         = Reveal to Iris / Running Back in Time
| length24        = 3:13
| title25         = He's a Hero
| length25        = 2:35
| title26         = Tricksters
| length26        = 2:52
| title27         = Called Some Friends for Help
| length27        = 4:15
| title28         = Second Chance
| length28        = 3:04
| title29         = Closing the Wormhole
| length29        = 4:43
}}

{{Track listing
| headline        = Disc 2
| total_length    = 59:12

| title1          = Saga Sell
| length1         = 0:36
| title2          = Rainbow Raider Strikes
| length2         = 2:24
| title3          = What I Can See
| length3         = 0:43
| title4          = Forming a Task Force
| length4         = 1:27
| title5          = Don't Get Involved
| length5         = 0:41
| title6          = Team Arrow in Central City
| length6         = 2:32
| title7          = Give You a Lift
| length7         = 0:58
| title8          = Training Barry
| length8         = 2:24
| title9          = What's Up, Doc?
| length9         = 2:21
| title10         = Barry Gets Whammied
| length10        = 3:05
| title11         = Flash Taunts Eddie
| length11        = 1:03
| title12         = The Flash vs. Arrow
| length12        = 5:06
| title13         = S.T.A.R. Labs Thanks Oliver
| length13        = 1:52
| title14         = A Girl Oliver Once Knew
| length14        = 1:08
| title15         = Firestorm Appears
| length15        = 0:52
| title16         = The Man in the Yellow Suit
| length16        = 2:15
| title17         = What You Can Do
| length17        = 1:20
| title18         = Use of Powers
| length18        = 1:58
| title19         = Saving Innocent People
| length19        = 3:01
| title20         = What Barry Saw
| length20        = 2:26
| title21         = Eobard Desiccates Wells
| length21        = 1:53
| title22         = I Love You, Iris
| length22        = 1:34
| title23         = Cold Wants to Know His Name
| length23        = 1:22
| title24         = Lucid Dreaming
| length24        = 2:59
| title25         = Grodd Mind Control
| length25        = 1:41
| title26         = Taken Enough
| length26        = 2:16
| title27         = Luring the Admission From Wells
| length27        = 3:21
| title28         = Eobard Confesses
| length28        = 1:44
| title29         = Super Collider
| length29        = 3:29
| title30         = A New Name
| length30        = 1:01
}}

===Arrowverse tie-ins===
In March 2014, it was announced that Gustin would not appear in a third episode of ''Arrow'' as originally planned. However, Panabaker and Valdes appear in the ''Arrow'' episode "The Man Under the Hood" in their roles as Caitlin Snow and Cisco Ramon, respectively. ''Arrow'' executive producer Marc Guggenheim stated, "This was something that really came about because obviously Barry is in a coma at the end of ["Three Ghosts"]. That pretty much made it impossible for Barry to appear in [the third episode, as originally planned]... The idea of bringing in [Caitlin Snow and Cisco Ramon] really, really appealed to us because it allowed us to honor our original intention [of] doing something Flash-related around episode 19 or 20 [of season two] without having comatose Barry and basically paying Grant Gustin a lot of money to sit around with his eyes closed just unconscious the whole episode... It allows us to further flesh out the ''Flash'' universe in ''Arrow''."<ref name="PanabakerValdesArrow">{{cite magazine|url=https://www.tvguide.com/News/Arrow-Flash-Panabaker-Valdes-1079429.aspx |title=Arrow Scoop: Which Flash Characters Are Heading to Starling City? |last=Abrams |first=Natalie |magazine=TV Guide |date=March 17, 2014 |access-date=March 17, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140318032650/http://www.tvguide.com/News/Arrow-Flash-Panabaker-Valdes-1079429.aspx |archive-date=March 18, 2014 }}</ref> Gustin had a brief cameo appearance in the ''Arrow'' season three premiere, "The Calm".<ref>{{cite web|url=http://au.ibtimes.com/articles/569102/20141010/arrow-season-3-spoilers-watch-recap-canary.htm |title='Arrow' Season 3, Episode 1 Recap, Spoilers, Review: Hong Kong, Olicity, The Short-lived 'Calm' And What Happens Next [Watch Arrow 3x2 Promo Video] |last=Paredes |first=Arlene |work=[[International Business Times]] |date=October 10, 2014 |access-date=October 10, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141012034954/http://au.ibtimes.com/articles/569102/20141010/arrow-season-3-spoilers-watch-recap-canary.htm |archive-date=October 12, 2014 }}</ref> Valdes appeared once again in the season three episode "Broken Arrow",<ref>{{cite web|url=https://www.ign.com/articles/2015/04/16/arrow-broken-arrow-review |title=Tech Meets Instinct |last=Schedeen |first=Jesse |website=[[IGN]] |date=April 15, 2015 |access-date=April 17, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150416052716/http://www.ign.com/articles/2015/04/16/arrow-broken-arrow-review |archive-date=April 16, 2015 }}</ref> while Gustin appeared in the final episode of season three, "My Name is Oliver Queen".<ref>{{cite magazine|url=https://www.ew.com/article/2015/05/06/arrow-season-3-oliver-identity |title=Arrow preview: Who is Oliver Queen? |last=Abrams |first=Natalie |magazine=Entertainment Weekly |date=May 6, 2015 |access-date=May 7, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150509003618/http://www.ew.com/article/2015/05/06/arrow-season-3-oliver-identity |archive-date=May 9, 2015 }}</ref>
<!-- * https://variety.com/2015/tv/news/atom-costume-arrow-ray-palmer-brandon-routh-1201422663/ -->
[[Stephen Amell]] appears as Oliver Queen / Arrow in the pilot episode.<ref name="AmellPilot">{{cite web|url=https://www.tvguide.com/News/Flash-Arrow-Crossover-1081785.aspx |title=Exclusive: The Flash's Pilot Features an Arrow Crossover! |work=TV Guide |date=May 15, 2014 |access-date=May 15, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140517125502/http://www.tvguide.com/News/Flash-Arrow-Crossover-1081785.aspx |archive-date=May 17, 2014 }}</ref> Kreisberg announced that [[Emily Bett Rickards]] would appear in the fourth episode as Felicity.<ref name="FelicityFlashEp4">{{cite web|url=https://www.tvguide.com/News/Flash-Wentworth-Miller-Arrow-Crossovers-1084633.aspx |title=The Flash Casts Wentworth Miller, Plots Arrow Crossovers |last=Abram |first=Natalie |work=TV Guilde |date=July 18, 2014 |access-date=July 18, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140720034146/http://www.tvguide.com/News/Flash-Wentworth-Miller-Arrow-Crossovers-1084633.aspx |archive-date=July 20, 2014 }}</ref> Previous ''Arrow'' adversary [[William Tockman (Arrowverse)|William Tockman / The Clock King]] ([[Robert Knepper]]) was in the seventh episode.<ref name="ClockKing">{{cite web|url=http://tvline.com/2014/08/07/flash-arrow-crossover-episode-spoilers-clock-king/ |title=Arrow's [Spoiler] Crosses Over to Flash |last=Swift |first=Andy |website=[[TVLine]] |date=August 7, 2014 |access-date=August 8, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140808111723/http://tvline.com/2014/08/07/flash-arrow-crossover-episode-spoilers-clock-king/ |archive-date=August 8, 2014 }}</ref> Members of [[The Royal Flush Gang]], who previously appeared on ''Arrow'', made a cameo appearance in the eleventh episode of the series.<ref>{{cite web|url=https://www.ign.com/articles/2015/01/28/the-flash-the-sound-and-the-fury-review |title=Time To Pay The Piper |last=Schedeen |first=Jesse |website=[[IGN]] |date=January 27, 2015 |access-date=January 28, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150128144219/http://www.ign.com/articles/2015/01/28/the-flash-the-sound-and-the-fury-review |archive-date=January 28, 2015 }}</ref> Rickards and [[Brandon Routh]] as [[Ray Palmer (Arrowverse)|Ray Palmer]] had scenes in the eighteenth episode, "All Star Team Up".<ref name="Ep18Title">{{cite magazine|url=https://variety.com/2015/tv/news/arrow-without-oliver-producers-preview-the-rise-of-black-canary-atom-and-brick-1201410918/ |title=''Arrow'' Without Oliver? Producers Preview the Rise of Black Canary, Atom and Brick |magazine=[[Variety (magazine)|Variety]] |date=January 21, 2015 |access-date=January 21, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150122062216/http://variety.com/2015/tv/news/arrow-without-oliver-producers-preview-the-rise-of-black-canary-atom-and-brick-1201410918/ |archive-date=January 22, 2015 }}</ref><ref name="ep118">{{cite web|url=http://www.thefutoncritic.com/listings/20150409cw12/|title=Episode Title: (#118) "All Star Team Up"|work=[[The Futon Critic]]|access-date=April 10, 2015}}</ref> [[Katie Cassidy]] and [[Paul Blackthorne]], as [[Laurel Lance (Arrowverse)|Laurel Lance / Black Canary]] and Detective [[Quentin Lance]], respectively, appeared in the following episode, "Who Is Harrison Wells?",<ref name="ep119"/><ref>{{cite news|url=http://www.comicbookresources.com/article/wells-promises-the-flash-will-die-in-new-trailer-from-upcoming-episodes |title=Wells Promises 'The Flash' Will Die in New Trailer for Upcoming Episodes |last=Ching |first=Albert |newspaper=[[Comic Book Resources]] |date=March 16, 2015 |access-date=March 16, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150317010311/http://www.comicbookresources.com/article/wells-promises-the-flash-will-die-in-new-trailer-from-upcoming-episodes |archive-date=March 17, 2015 }}</ref><ref name="QuentinLanceFlash" /> while Amell and [[Doug Jones (actor)|Doug Jones]] as [[Jake Simmons (Arrowverse)|Jake Simmons / Deathbolt]] appeared in the twenty-second episode, "Rogue Air".<ref name="JonesFlash"/><ref name="QuentinLanceFlash">{{cite web|url=https://www.ign.com/articles/2015/04/01/the-flash-new-trailer-reveals-another-arrow-crossover |title=THE FLASH: NEW TRAILER REVEALS ANOTHER ARROW CROSSOVER |last=Goldman |first=Eric |website=[[IGN]] |date=March 31, 2015 |access-date=April 1, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150403112450/http://www.ign.com/articles/2015/04/01/the-flash-new-trailer-reveals-another-arrow-crossover |archive-date=April 3, 2015 }}</ref>

===="Flash vs. Arrow"====
{{main|Flash vs. Arrow}}
On July 18, 2014, Kreisberg stated that a crossover event would occur in the eighth episode of the first season of ''The Flash'' and the third season of ''Arrow'', respectively.<ref>{{cite web|url=https://collider.com/the-flash-arrow-crossover-episode/ |title=The Flash/Arrow Crossover Episode Planned on The CW |last=Chitwood |first=Adam |work=[[Collider (website)|Collider]] |date=July 18, 2014 |access-date=November 12, 2016 |url-status=live |archive-url=https://web.archive.org/web/20160315034400/http://collider.com/the-flash-arrow-crossover-episode/ |archive-date=March 15, 2016 }}</ref> In early January 2015, The CW president [[Mark Pedowitz]] announced the intention to do a ''Flash''/''Arrow'' crossover every season, after the success of the first one.<ref>{{cite web|url=https://www.tvguide.com/News/CW-Renewals-Beauty-Beast-1091649.aspx |title=The CW Renews Supernatural and 7 More — But Where's Beauty and the Beast? |last=Nguyen |first=Hanh |work=[[TV Guide]] |date=January 11, 2015 |access-date=January 11, 2015 |url-status=live |archive-url=https://web.archive.org/web/20170818045347/http://www.tvguide.com/news/cw-renewals-beauty-beast-1091649/ |archive-date=August 18, 2017 }}</ref>

==Marketing==
In April 2015, to celebrate the season three finale of ''Arrow'' and season one finale of ''The Flash'', The CW released a short promo titled "Superhero Fight Club".<ref>{{Cite news |url=https://screenrant.com/flash-arrow-tv-fight-club-promo-video/ |title='The Flash' & 'Arrow' Stars Battle in 'Superhero Fight Club' Promo |date=April 13, 2015 |work=[[Screen Rant]] |access-date=May 5, 2015 |archive-url=https://web.archive.org/web/20150428115209/http://screenrant.com/flash-arrow-tv-fight-club-promo-video/ |archive-date=April 28, 2015 |url-status=live}}</ref> The short features characters from ''Arrow'' and ''The Flash'' battling each other in a hero vs. villain showdown. Characters include Arrow, Flash, Arsenal, Black Canary, Merlyn, Captain Cold, Heat Wave, Firestorm, Ra's al Ghul, Reverse-Flash, and the A.T.O.M. in a [[cage match]] fight.<ref>{{Cite magazine |url=https://www.ew.com/article/2015/04/13/arrow-introduces-flash-superhero-fight-club |title=Arrow introduces The Flash to the Superhero Fight Club |date=April 13, 2015 |magazine=[[Entertainment Weekly]] |access-date=May 5, 2015 |archive-url=https://web.archive.org/web/20150512053657/http://www.ew.com/article/2015/04/13/arrow-introduces-flash-superhero-fight-club |archive-date=May 12, 2015 |url-status=live}}</ref>

==Release==
===Broadcast===
<!--Do not add channels to this list. We are not a TV guide. If you do so, it will be reverted.-->
''The Flash'' was screened at the Warner Bros. Television and DC Entertainment panel at [[San Diego Comic-Con]] in July 2014.<ref name="PilotComicCon">{{cite web|url=http://www.dccomics.com/blog/2014/06/30/breaking-news-gotham-the-flash-constantine-and-arrow-will-share-the-stage-at-comic |title=Breaking News: Gotham, The Flash, Constantine and Arrow Will Share the Stage at Comic-Con |last=Beedle |first=Tim |publisher=DC Comics |date=June 30, 2014 |access-date=July 1, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140707161255/http://www.dccomics.com/blog/2014/06/30/breaking-news-gotham-the-flash-constantine-and-arrow-will-share-the-stage-at-comic |archive-date=July 7, 2014 }}</ref> The series officially premiered on [[The CW]] on October 7, 2014, during the [[2014–15 United States network television schedule|2014–15 television season]]<ref name="premiere">{{cite web |url=http://tvbythenumbers.zap2it.com/2014/06/25/the-cw-announces-fall-premiere-dates/ |title=The CW Announces Fall Premiere Dates |last=Bibel |first=Sara |publisher=[[TV by the Numbers]] |date=June 25, 2014 |access-date=June 25, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20140714161634/http://tvbythenumbers.zap2it.com/2014/06/25/the-cw-announces-fall-premiere-dates/ |archive-date=July 14, 2014 }}</ref> and also premiered in Canada on the same night.<ref name="cashowstart">{{cite web|url=http://www.ctv.ca/thectvinsider/articles/news/ctv_premieres.aspx/ |title=CTV Fall 2014 lineup premiere dates announced |publisher=CTV |date=July 29, 2014 |access-date=September 30, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141006073414/http://www.ctv.ca/thectvinsider/articles/news/ctv_premieres.aspx/ |archive-date=October 6, 2014 }}</ref> The second episode was screened at [[New York Comic Con]] on October 9, 2014, as a way to repay the viewers that watched the series' premiere episode.<ref name="Ep2ComicConScreen">{{cite web|url=https://www.ign.com/articles/2014/10/10/nycc-the-flashs-second-episode-and-the-100-season-premiere-debut |title=NYCC: The Flash's Second Episode And The 100 Season Premiere Debut |last=Morgan |first=Layne |website=[[IGN]] |date=October 10, 2014 |access-date=October 12, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141012185638/http://www.ign.com/articles/2014/10/10/nycc-the-flashs-second-episode-and-the-100-season-premiere-debut |archive-date=October 12, 2014 }}</ref> The series premiered in the United Kingdom and Ireland on October 28, 2014,<ref>{{cite news|url=http://www.stokesentinel.co.uk/Flash-UK-premiere/story-23060198-detail/story.html |title=When is The Flash UK premiere? |last=Tidesw |first=Martin |work=The Sentinel (Staffordshire) |date=October 8, 2014 |access-date=November 3, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141220084804/http://www.stokesentinel.co.uk/Flash-UK-premiere/story-23060198-detail/story.html |archive-date=December 20, 2014 }}</ref> and in Australia on December 3, 2014.<ref name="aushowstart">{{cite web |url=http://www.foxtel.com.au/whats-on/foxtel-insider/jane-the-virgin-and-the-flash-premiere-on-fox8-239971.htm |title=Jane the Virgin and The Flash: Premiere on Fox8 |publisher=[[Foxtel]] |date=November 10, 2014 |access-date=January 5, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20141224194710/http://www.foxtel.com.au/whats-on/foxtel-insider/jane-the-virgin-and-the-flash-premiere-on-fox8-239971.htm |archive-date=December 24, 2014  }}</ref>

===Home media===
The season began streaming on [[Netflix]] on October 6, 2015,<ref name="S1Netflix">{{Cite web|url=https://www.denofgeek.com/us/tv/the-flash/249407/the-flash-season-1-netflix-release-date-confirmed |title=The Flash Season 1 Netflix Release Date Confirmed |last=Olin |first=Bryce |date=September 18, 2015 |publisher=[[Dennis Publishing|Den of Geek]] |access-date=October 29, 2016 |url-status=live |archive-url=https://web.archive.org/web/20161008232704/http://www.denofgeek.com/us/tv/the-flash/249407/the-flash-season-1-netflix-release-date-confirmed |archive-date=October 8, 2016 }}</ref> and was released on [[Blu-ray]] and [[DVD]] in [[DVD region code#Region codes and countries|Region 1]] on September 22, 2015.<ref name="s1R1_A"/>
{{Television home release
| caption = Home media releases of ''The Flash'' season 1
| color = 97B5CC
| title = The Flash: The Complete First Season
| set_details = 
* 23 episodes
* 5-disc DVD set/4-disc Blu-ray set
* English (Dolby Digital 5.1 Surround)
* English [[Dubtitle|SDH]], Spanish and French subtitles
* Subtitles: English
| special_features = 
* DC Comics Night at Comic-Con 2014
* Deleted Scenes
* Gag Reel
* Audio Commentary
* Featurettes
** The Fastest Man Alive!
** Creating the Blur
** The Chemistry of Emily and Grant Screen Test
** Behind the Story: The Trickster Returns!
| region1 = September 22, 2015<ref name=s1R1_A>{{cite web |url=http://www.tvshowsondvd.com/news/Flash-Season-1/21217 |title=The Flash: Season 1 |publisher=TVShowsonDVD.com |access-date=June 26, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20170402115238/http://www.tvshowsondvd.com/news/Flash-Season-1/21217 |archive-date=April 2, 2017  }}</ref>
| region2 = September 21, 2015<ref>{{Cite web |url=https://www.amazon.co.uk/dp/B00VFZUA5E/ |title=The Flash – Season 1 [DVD] [2015] |publisher=amazon.co.uk |access-date=November 14, 2016 |archive-url=https://web.archive.org/web/20190903013022/https://www.amazon.co.uk/dp/B00VFZUA5E/ |archive-date=September 3, 2019 |url-status=live }}</ref>
| region4 = September 23, 2015<ref>{{Cite web |url=http://www.ezydvd.com.au/DVD/flash-the-2014-season-1/dp/6168003 |title=The Flash – Season 1 [DVD] |publisher=EzyDVD |access-date=November 14, 2016 |url-status=dead |archive-url=https://web.archive.org/web/20170129080036/http://www.ezydvd.com.au/DVD/flash-the-2014-season-1/dp/6168003 |archive-date=January 29, 2017  }}</ref>
| regionA = September 22, 2015<ref name=s1R1_A/>
| regionB = September 21, 2015<ref>{{Cite web |url=https://www.amazon.co.uk/dp/B00VFZUATK/ |title=The Flash – Season 1 [Blu-ray] [2015] |date=September 21, 2015 |publisher=amazon.co.uk |access-date=November 14, 2016}}</ref>
}}

===Copyright infringement===
The first season of ''The Flash'' was the fifth most-pirated TV series in 2015.<ref>{{cite web |archive-url=https://web.archive.org/web/20160310175113/http://www.wired.co.uk/news/archive/2015-12/28/game-of-thrones-tops-piracy-charts-2015 |archive-date=March 10, 2016 |url=https://www.wired.co.uk/news/archive/2015-12/28/game-of-thrones-tops-piracy-charts-2015 |title=Game of Thrones tops 2015's piracy charts|work=[[Wired (website)|Wired]]|first=Matt |last=Kamen |date=December 28, 2015 |access-date=December 26, 2016|url-status=live}}</ref>

== Reception ==
=== Ratings ===
{{Television episode ratings
| title    = The Flash'' season 1''

| title1   = [[#ep1|Pilot]]
| date1    = October 7, 2014
| rs1      = 1.9/6
| viewers1 = 4.83<ref name="1.01"/>
| dvr1     = 0.7
| dvrv1    = 2.00
| total1   = 2.6
| totalv1  = 6.83<ref>{{cite web|last=Ng |first=Philiana |title='The Flash' Premiere Sets CW Record in Final DVR Ratings |url=https://www.hollywoodreporter.com/live-feed/flash-premiere-sets-cw-record-744209 |work=Hollywood Reporter |date=October 27, 2014 |url-status=live |archive-url=https://web.archive.org/web/20160309095302/http://www.hollywoodreporter.com/live-feed/flash-premiere-sets-cw-record-744209 |archive-date=March 9, 2016 }}</ref>

| title2   = [[#ep2|Fastest Man Alive]]
| date2    = October 14, 2014
| rs2      = 1.7/5
| viewers2 = 4.27<ref name="1.02"/>
| dvr2     = n/a
| dvrv2    = n/a
| total2   = n/a
| totalv2  = n/a

| title3   = [[#ep3|Things You Can't Outrun]]
| date3    = October 21, 2014
| rs3      = 1.5/4
| viewers3 = 3.59<ref name="1.03"/>
| dvr3     = 0.5
| dvrv3    = 1.63
| total3   = 2.0
| totalv3  = 5.22<ref>{{cite web|url=http://tvbythenumbers.zap2it.com/2014/10/26/more-than-5-million-viewers-catch-up-with-the-flash-in-l3/319091/|title=More than 5 Million Viewers catch up with 'The Flash' in L+3 - Ratings|work=[[TV by the Numbers]]|last=Kondolojy|first=Amanda|date=October 26, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20150911034459/http://tvbythenumbers.zap2it.com/2014/10/26/more-than-5-million-viewers-catch-up-with-the-flash-in-l3/319091/ |archive-date=September 11, 2015}}</ref>{{ref|ratings-1|1}}

| title4   = [[#ep4|Going Rogue]]
| date4    = October 28, 2014
| rs4      = 1.4/4
| viewers4 = 3.53<ref name="1.04"/>
| dvr4     = 0.9
| dvrv4    = n/a
| total4   = 2.3<ref>{{cite web |last=Kondolojy |first=Amanda |title='Modern Family' Has Biggest Adults 18–49 Ratings Increase; 'Elementary', 'Parnethood' & 'The Originals' Top Percentage Gains & 'The Blacklist' Leads Viewer Gains in Live +7 Ratings for Week 6 Ending November 2 |url=http://tvbythenumbers.zap2it.com/2014/11/17/modern-family-has-biggest-adults-18-49-ratings-increase-elementary-parnethood-the-originals-top-percentage-gains-the-blacklist-leads-viewer-gains-in-live-7-ratings-for-week/328676/ |work=[[TV by the Numbers]] |access-date=November 17, 2014 |date=November 17, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141119190206/http://tvbythenumbers.zap2it.com/2014/11/17/modern-family-has-biggest-adults-18-49-ratings-increase-elementary-parnethood-the-originals-top-percentage-gains-the-blacklist-leads-viewer-gains-in-live-7-ratings-for-week/328676/ |archive-date=November 19, 2014 }}</ref>
| totalv4  = n/a

| title5   = [[#ep5|Plastique]]
| date5    = November 11, 2014
| rs5      = 1.4/4
| viewers5 = 3.46<ref name="1.05"/>
| dvr5     = 1.0
| dvrv5    = n/a
| total5   = 2.4<ref>{{cite web |last=Bibel |first=Sara |title='Modern Family' Has Biggest Adults 18–49 Ratings Increase; 'Reign' Tops Percentage Gains & 'The Big Bang Theory' Leads Viewer Gains in Live +7 Ratings for Week 8 Ending November 16 |url=http://tvbythenumbers.zap2it.com/2014/12/08/modern-family-has-biggest-adults-18-49-ratings-increase-reign-tops-percentage-gains-the-big-bang-theory-leads-viewer-gains-in-live-7-ratings-for-week-8-ending-november-16/336692/ |work=[[TV by the Numbers]] |access-date=December 21, 2014 |date=December 8, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141218065004/http://tvbythenumbers.zap2it.com/2014/12/08/modern-family-has-biggest-adults-18-49-ratings-increase-reign-tops-percentage-gains-the-big-bang-theory-leads-viewer-gains-in-live-7-ratings-for-week-8-ending-november-16/336692/ |archive-date=December 18, 2014 }}</ref>
| totalv5  = n/a

| title6   = [[#ep6|The Flash Is Born]]
| date6    = November 18, 2014
| rs6      = 1.4/4
| viewers6 = 3.73<ref name="1.06"/>
| dvr6     = 0.9
| dvrv6    = n/a
| total6   = 2.3<ref>{{cite web |last=Kondolojy |first=Amanda |title='Modern Family' Has Biggest Adults 18–49 Ratings Increase; 'Reign' Tops Percentage Gains & 'The Big Bang Theory' Leads Viewer Gains in Live +7 Ratings for Week 8 Ending November 16 |url=http://tvbythenumbers.zap2it.com/2014/12/08/modern-family-has-biggest-adults-18-49-ratings-increase-reign-tops-percentage-gains-the-big-bang-theory-leads-viewer-gains-in-live-7-ratings-for-week-8-ending-november-16/336692/ |work=[[TV by the Numbers]] |access-date=December 8, 2014 |date=December 8, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141218065004/http://tvbythenumbers.zap2it.com/2014/12/08/modern-family-has-biggest-adults-18-49-ratings-increase-reign-tops-percentage-gains-the-big-bang-theory-leads-viewer-gains-in-live-7-ratings-for-week-8-ending-november-16/336692/ |archive-date=December 18, 2014 }}</ref>
| totalv6  = n/a

| title7   = [[#ep7|Power Outage]]
| date7    = November 25, 2014
| rs7      = 1.4/4
| viewers7 = 3.47<ref name="1.07"/>
| dvr7     = 0.9
| dvrv7    = 2.41
| total7   = 2.3
| totalv7  = 5.88<ref>{{cite web |last=Kondolojy |first=Amanda |title=[Updated] 'Criminal Minds' Has Biggest Adults 18–49 Ratings Increase; 'Grimm', 'Elementary' & 'Revenge' Top Percentage Gains & 'NCIS' Leads Viewer Gains in Live +7 Ratings for Week 10 Ending November 30 |url=http://tvbythenumbers.zap2it.com/2014/12/15/gotham-has-biggest-adults-18-49-ratings-increase-grimm-revenge-top-percentage-gains-ncis-leads-viewer-gains-in-live-7-ratings-for-week-10-ending-november-30/339641/ |work=[[TV by the Numbers]] |access-date=December 17, 2014 |date=December 15, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141220032112/http://tvbythenumbers.zap2it.com/2014/12/15/gotham-has-biggest-adults-18-49-ratings-increase-grimm-revenge-top-percentage-gains-ncis-leads-viewer-gains-in-live-7-ratings-for-week-10-ending-november-30/339641/ |archive-date=December 20, 2014 }}</ref>

| title8   = [[#ep8|Flash vs. Arrow]]
| date8    = December 2, 2014
| rs8      = 1.6/5
| viewers8 = 4.34<ref name="1.08"/>
| dvr8     = 1.0
| dvrv8    = 2.31
| total8   = 2.6
| totalv8  = 6.65<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2014/12/22/modern-family-has-biggest-adults-18-49-ratings-constantine-the-vampire-diaries-top-percentage-gains-in-live-7-ratings-for-week-11-ending-december-7/342014/ |title='Modern Family' Has Biggest Adults 18–49 Ratings & Viewership Increase; 'Constantine' & 'The Vampire Diaries' Top Percentage Gains in Live +7 Ratings for Week 11 Ending December 7 |work=[[TV by the Numbers]] |last=Bibel |access-date=January 2, 2015 |date=December 22, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141228175504/http://tvbythenumbers.zap2it.com/2014/12/22/modern-family-has-biggest-adults-18-49-ratings-constantine-the-vampire-diaries-top-percentage-gains-in-live-7-ratings-for-week-11-ending-december-7/342014/ |archive-date=December 28, 2014 }}</ref>

| title9   = [[#ep9|The Man in the Yellow Suit]]
| date9    = December 9, 2014
| rs9      = 1.5/5
| viewers9 = 4.66<ref name="1.09"/>
| dvr9     = 0.9
| dvrv9    = 2.06
| total9   = 2.4
| totalv9  = 6.72<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2014/12/29/the-big-bang-theory-has-biggest-adults-18-49-ratings-elementary-tops-percentage-gains-in-live-7-ratings-for-week-12-ending-december-14/344258/ |title='The Big Bang Theory' Has Biggest Adults 18–49 Ratings & Viewership Increase; 'Elementary' Tops Percentage Gains in Live +7 Ratings for Week 12 Ending December 14 |work=[[TV by the Numbers]] |last=Kondolojy |first=Amanda |access-date=January 2, 2015 |date=December 29, 2014 |url-status=dead |archive-url=https://web.archive.org/web/20141231175653/http://tvbythenumbers.zap2it.com/2014/12/29/the-big-bang-theory-has-biggest-adults-18-49-ratings-elementary-tops-percentage-gains-in-live-7-ratings-for-week-12-ending-december-14/344258/ |archive-date=December 31, 2014 }}</ref>

| title10   = [[#ep10|Revenge of the Rogues]]
| date10    = January 20, 2015
| rs10      = 1.4/5
| viewers10 = 3.87<ref name="1.10"/>
| dvr10     = 1.0
| dvrv10    = 2.41
| total10   = 2.4
| totalv10  = 6.27<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/02/09/empire-notches-biggest-adults-18-49-increase-revenge-tops-percentage-gainers-in-live-7-ratings-for-week-18-ending-january-25/361178/ |title='Empire' Notches Biggest Adults 18–49 Increase, 'Revenge' Leads Percentage Gainers & 'Elementary' Tops Viewership Gains in Live +7 Ratings for Week 18 Ending January 25 |last=Kondolojy |first=Amanda |work=[[TV by the Numbers]] |date=February 9, 2015 |access-date=February 9, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150209215129/http://tvbythenumbers.zap2it.com/2015/02/09/empire-notches-biggest-adults-18-49-increase-revenge-tops-percentage-gainers-in-live-7-ratings-for-week-18-ending-january-25/361178/ |archive-date=February 9, 2015 }}</ref>

| title11   = [[#ep11|The Sound and the Fury]]
| date11    = January 27, 2015
| rs11      = 1.3/4
| viewers11 = 4.08<ref name="1.11"/>
| dvr11     = 1.0
| dvrv11    = 2.20
| total11   = 2.3
| totalv11  = 6.28<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/02/17/the-big-bang-theory-notches-biggest-adults-18-49-viewership-increase-hart-of-dixie-top-percentage-gainers-in-live-7-ratings-for-week-18-ending-february-1-2/ |title='The Big Bang Theory' Notches Biggest Adults 18–49 & Viewership Increase, 'Hart of Dixie' Top Percentage Gainer in Live +7 Ratings for Week 18 Ending February 1 |work=[[TV by the Numbers]] |last=Kondolojy |first=Amanda |date=February 17, 2015 |access-date=February 17, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20160305005608/http://tvbythenumbers.zap2it.com/2015/02/17/the-big-bang-theory-notches-biggest-adults-18-49-viewership-increase-hart-of-dixie-top-percentage-gainers-in-live-7-ratings-for-week-18-ending-february-1-2/ |archive-date=March 5, 2016 }}</ref>

| title12   = [[#ep12|Crazy for You]]
| date12    = February 3, 2015
| rs12      = 1.3/4
| viewers12 = 3.60<ref name="1.12"/>
| dvr12     = 0.9
| dvrv12    = n/a
| total12   = 2.2<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/02/23/the-big-bang-theory-leads-adults-18-49-viewership-gains-glee-tops-percentage-increases-in-live-7-ratings-for-week-20-ending-february-8/366578/ |title='The Big Bang Theory' Leads Adults 18–49 & Viewership Gains, 'Glee' Tops Percentage Increases in Live +7 Ratings for Week 20 Ending February 8 |work=[[TV by the Numbers]] |last=Kondolojy |first=Amanda |date=February 23, 2015 |access-date=February 26, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150226000822/http://tvbythenumbers.zap2it.com/2015/02/23/the-big-bang-theory-leads-adults-18-49-viewership-gains-glee-tops-percentage-increases-in-live-7-ratings-for-week-20-ending-february-8/366578/ |archive-date=February 26, 2015 }}</ref>
| totalv12  = n/a

| title13   = [[#ep13|The Nuclear Man]]
| date13    = February 10, 2015
| rs13      = 1.5/5
| viewers13 = 3.66<ref name="1.13"/>
| dvr13     = 0.6
| dvrv13    = 1.39
| total13   = 2.1
| totalv13  = 5.05<ref>{{cite web|url=http://tvbythenumbers.zap2it.com/network-press-releases/the-cws-supernatural-has-its-most-watched-episode-since-its-midseason-finale/|title=The CW's 'Supernatural' Has Its Most Watched Episode Since Its Midseason Finale|work=[[TV by the Numbers]]|last=Baron|first=Steve|date=February 18, 2015|access-date=February 26, 2015|archive-url=https://web.archive.org/web/20170605153533/http://tvbythenumbers.zap2it.com/network-press-releases/the-cws-supernatural-has-its-most-watched-episode-since-its-midseason-finale/|archive-date=June 5, 2017|url-status=dead}}</ref>{{ref|ratings-1|1}}

| title14   = [[#ep14|Fallout]]
| date14    = February 17, 2015
| rs14      = 1.5/4
| viewers14 = 4.01<ref name="1.14"/>
| dvr14     = 0.9
| dvrv14    = n/a
| total14   = 2.4<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/03/09/the-big-bang-theory-leads-adults-18-49-viewership-gains-the-blacklist-tops-percentage-increases-in-live-7-ratings-for-week-22-ending-february-22/372820 |title='The Big Bang Theory' Leads Adults 18–49 & Viewership Gains + 'The Blacklist' Tops Percentage Increases in Live +7 Ratings for Week 22 Ending February 22 – Ratings |publisher=TVbytheNumbers.Zap2it.com |access-date=March 12, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150311194801/http://tvbythenumbers.zap2it.com/2015/03/09/the-big-bang-theory-leads-adults-18-49-viewership-gains-the-blacklist-tops-percentage-increases-in-live-7-ratings-for-week-22-ending-february-22/372820/ |archive-date=March 11, 2015 }}</ref>
| totalv14   = n/a

| title15   = [[#ep15|Out of Time]]
| date15    = March 17, 2015
| rs15      = 1.3/5
| viewers15 = 3.69<ref name="1.15"/>
| dvr15     = 1.0
| dvrv15    = 2.34
| total15   = 2.3
| totalv15  = 6.09<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/04/06/empire-leads-adults-18-49-viewership-gains-the-originals-tops-percentage-increases-in-live-7-ratings-for-week-26-ending-march-22-2/ |title='Empire' Leads Adults 18–49 & Viewership Gains + 'The Originals' Tops Percentage Increases in Live +7 Ratings for Week 26 Ending March 22 |publisher=TVbytheNumbers.Zap2it.com |date=April 6, 2015 |access-date=April 6, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20151121033734/http://tvbythenumbers.zap2it.com/2015/04/06/empire-leads-adults-18-49-viewership-gains-the-originals-tops-percentage-increases-in-live-7-ratings-for-week-26-ending-march-22-2/ |archive-date=November 21, 2015 }}</ref>

| title16   = [[#ep16|Rogue Time]]
| date16    = March 24, 2015
| rs16      = 1.2/4
| viewers16 = 3.33<ref name="1.16"/>
| dvr16     = 1.0
| dvrv16    = 2.37
| total16   = 2.2
| totalv16  = 5.69<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/04/13/modern-family-leads-adults-18-49-gains-forever-tops-percentage-increases-the-blacklist-wins-viewership-growth-in-live-7-ratings-for-week-27-ending-march-29/388237/ |title='Modern Family' Leads Adults 18–49 Gains, 'Forever' Tops Percentage Increases & 'The Blacklist' Wins Viewership Growth in Live +7 Ratings for Week 27 Ending March 29 |work=[[TV by the Numbers]] |last=Bibel |first=Sara |date=April 13, 2015 |access-date=May 12, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150505233525/http://tvbythenumbers.zap2it.com/2015/04/13/modern-family-leads-adults-18-49-gains-forever-tops-percentage-increases-the-blacklist-wins-viewership-growth-in-live-7-ratings-for-week-27-ending-march-29/388237/ |archive-date=May 5, 2015 }}</ref>

| title17   = [[#ep17|Tricksters]]
| date17    = March 31, 2015
| rs17      = 1.3/4
| viewers17 = 3.67<ref name="1.17"/>
| dvr17     = 1.0
| dvrv17    = 2.43
| total17   = 2.3
| totalv17  = 6.10<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/04/20/the-big-bang-theory-leads-adults-18-49-gains-the-blacklist-tops-percentage-viewership-growth-in-live-7-ratings-for-week-28-ending-april-5/392054/ |title='The Big Bang Theory' Leads Adults 18–49 Gains, 'The Blacklist' Tops Percentage & Viewership Growth in Live +7 Ratings for Week 28 Ending April 5 |work=[[TV by the Numbers]] |last=Kondolojy |first=Amanda |date=April 20, 2015 |access-date=May 12, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150525111520/http://tvbythenumbers.zap2it.com/2015/04/20/the-big-bang-theory-leads-adults-18-49-gains-the-blacklist-tops-percentage-viewership-growth-in-live-7-ratings-for-week-28-ending-april-5/392054/ |archive-date=May 25, 2015 }}</ref>

| title18   = [[#ep18|All Star Team Up]]
| date18    = April 14, 2015
| rs18      = 1.4/5
| viewers18 = 3.67<ref name="1.18"/>
| dvr18     = 0.9
| dvrv18    = 2.05
| total18   = 2.3
| totalv18  = 5.72<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/05/04/the-big-bang-theory-leads-adults-18-49-viewership-gains-reign-supernatural-the-vampire-diaries-top-percentage-growth-in-live-7-ratings-for-week-30-ending-april-19/399200/ |title='The Big Bang Theory' Leads Adults 18–49 & Viewership Gains, 'Reign', 'Supernatural' & 'The Vampire Diaries' Top Percentage Growth in Live +7 Ratings for Week 30 Ending April 19 |work=[[TV by the Numbers]] |last=Kondolojy |first=Amanda |date=May 12, 2015 |access-date=May 4, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150504211700/http://tvbythenumbers.zap2it.com/2015/05/04/the-big-bang-theory-leads-adults-18-49-viewership-gains-reign-supernatural-the-vampire-diaries-top-percentage-growth-in-live-7-ratings-for-week-30-ending-april-19/399200/ |archive-date=May 4, 2015 }}</ref>

| title19   = [[#ep19|Who Is Harrison Wells?]]
| date19    = April 21, 2015
| rs19      = 1.3/4
| viewers19 = 3.75<ref name="1.19"/>
| dvr19     = 0.9
| dvrv19    = n/a
| total19   = 2.2<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/05/11/the-big-bang-theory-leads-adults-18-49-viewership-gains-the-blacklist-the-vampire-diaries-top-percentage-growth-in-live-7-ratings-for-week-31-ending-april-26/402148/ |title='The Big Bang Theory' Leads Adults 18–49 & Viewership Gains, 'The Blacklist' & 'The Vampire Diaries' Top Percentage Growth in Live +7 Ratings for Week 31 Ending April 26 |work=[[TV by the Numbers]] |last=Bibel |first=Sara |date=May 11, 2015 |access-date=May 11, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150513212829/http://tvbythenumbers.zap2it.com/2015/05/11/the-big-bang-theory-leads-adults-18-49-viewership-gains-the-blacklist-the-vampire-diaries-top-percentage-growth-in-live-7-ratings-for-week-31-ending-april-26/402148/ |archive-date=May 13, 2015 }}</ref>
| totalv19  = n/a

| title20   = [[#ep20|The Trap]]
| date20    = April 28, 2015
| rs20      = 1.5/5
| viewers20 = 3.93<ref name="1.20"/>
| dvr20     = 0.9
| dvrv20    = n/a
| total20   = 2.4<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/05/18/the-big-bang-theory-modern-family-tie-for-adults-18-49-growth-the-messengers-leads-percentage-gains-the-blacklist-tops-viewership-increase-in-live-7-ratings-for-week-32-ending-ma/405533/ |title='The Big Bang Theory' & 'Modern Family' Tie for Adults 18–49 Growth, 'The Messengers' Leads Percentage Gains + 'The Blacklist' Tops Viewership Increase in Live +7 Ratings for Week 32 Ending May 3 |last=Kondolojy |first=Amanda |work=[[TV by the Numbers]] |date=May 18, 2015 |access-date=May 19, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20160602012049/http://tvbythenumbers.zap2it.com/2015/05/18/the-big-bang-theory-modern-family-tie-for-adults-18-49-growth-the-messengers-leads-percentage-gains-the-blacklist-tops-viewership-increase-in-live-7-ratings-for-week-32-ending-ma/405533/ |archive-date=June 2, 2016 }}</ref>
| totalv20  = n/a

| title21   = [[#ep21|Grodd Lives]]
| date21    = May 5, 2015
| rs21      = 1.5/5
| viewers21 = 3.62<ref name="1.21"/>
| dvr21     = 0.9
| dvrv21    = 2.27
| total21   = 2.4
| totalv21  = 5.97<ref>{{cite web|url=http://tvbythenumbers.zap2it.com/2015/05/26/the-big-bang-theory-leads-adults-18-49-viewership-growth-the-blacklist-tops-percentage-gains-in-live-7-ratings-for-week-32-ending-may-10/408087/ |title='The Big Bang Theory' Leads Adults 18–49 & Viewership Growth, 'The Blacklist' Tops Percentage Gains in Live +7 Ratings for Week 32 Ending May 10 |last=Bibel |first=Sara |work=[[TV by the Numbers]] |date=May 26, 2015 |access-date=June 1, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150526214917/http://tvbythenumbers.zap2it.com/2015/05/26/the-big-bang-theory-leads-adults-18-49-viewership-growth-the-blacklist-tops-percentage-gains-in-live-7-ratings-for-week-32-ending-may-10/408087/ |archive-date=May 26, 2015 }}</ref>

| title22   = [[#ep22|Rogue Air]]
| date22    = May 12, 2015
| rs22      = 1.5/5
| viewers22 = 3.65<ref name="1.22"/>
| dvr22     = 0.9
| dvrv22    = n/a
| total22   = 2.4<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/06/01/modern-family-leads-adults-18-49-viewership-growth-wayward-pines-tops-percentage-gains-in-live-7-ratings-for-week-33-ending-may-17/410944/ |title='Modern Family' Leads Adults 18–49 & Viewership Growth, 'Wayward Pines' Tops Percentage Gains in Live +7 Ratings for Week 33 Ending May 17 |last=Kondolojy |first=Amanda |work=[[TV by the Numbers]] |date=June 1, 2015 |access-date=June 1, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150602074736/http://tvbythenumbers.zap2it.com/2015/06/01/modern-family-leads-adults-18-49-viewership-growth-wayward-pines-tops-percentage-gains-in-live-7-ratings-for-week-33-ending-may-17/410944/ |archive-date=June 2, 2015 }}</ref>
| totalv22  = n/a

| title23   = [[#ep23|Fast Enough]]
| date23    = May 19, 2015
| rs23      = 1.5/5
| viewers23 = 3.87<ref name="1.23"/>
| dvr23     = 1.0
| dvrv23    = 2.38
| total23   = 2.5
| totalv23  = 6.25<ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/06/08/modern-family-leads-adults-18-49-viewership-growth-wayward-pines-tops-percentage-gains-in-live-7-ratings-for-week-35-ending-may-24/413654/ |title='Modern Family' Leads Adults 18–49 & Viewership Growth, 'Wayward Pines' Tops Percentage Gains in Live +7 Ratings for Week 35 Ending May 24 |work=[[TV by the Numbers]] |last=Bibel |first=Sara |date=June 8, 2015 |access-date=June 8, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150609122951/http://tvbythenumbers.zap2it.com/2015/06/08/modern-family-leads-adults-18-49-viewership-growth-wayward-pines-tops-percentage-gains-in-live-7-ratings-for-week-35-ending-may-24/413654/ |archive-date=June 9, 2015 }}</ref>
}}
{{note|ratings-1|1}} Live +7 ratings were not available, so Live +3 ratings have been used instead.

The first episode of ''The Flash'' was watched by 4.8 million viewers and had a 1.9 18–49 demographic rating, making it The CW's most watched and highest rated series premiere since ''[[The Vampire Diaries]]'' in 2009. It also became The CW's second-most watched series premiere ever, behind ''[[90210 (TV series)|90210]]'', and the third-highest rated in the 18–49 demographic.<ref name="S1PremiereRatings">{{cite news|url=http://tvline.com/2014/10/08/the-flash-premiere-ratings/ |title=Ratings: The Flash Hits the Ground Running, CW's Best Debut in 5 Years; ABC Sitcoms Tumble, POI Slips |last=Mitovich |first=Matt Webb |work=[[TVLine]] |date=October 8, 2014 |access-date=October 12, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141012124431/http://tvline.com/2014/10/08/the-flash-premiere-ratings/ |archive-date=October 12, 2014 }}</ref> Factoring Live + 7 day ratings, the pilot was watched by a total of 6.8 million viewers, becoming The CW's most-watched telecast and the highest-rated premiere among men 18–34 (2.5 rating). It broke the previous record for the most-watched telecast held by the [[America's Next Top Model (cycle 8)|cycle 8 finale of ''America's Next Top Model'']] in 2007 (6.69 million). Additionally, across all platforms, including initiated streams on digital platforms and total unduplicated viewers on-air over two airings the week of October 7, 2014, the premiere was seen more than 13 million times.<ref name="S1PremiereLive7">{{cite web|url=https://variety.com/2014/tv/news/the-flash-premiere-stands-as-most-watched-cw-telecast-ever-1201340371/ |title=The Flash' Premiere Stands as Most-Watched CW Telecast Ever |last=Kissell |first=Rick |work=[[Variety (magazine)|Variety]] |date=October 27, 2014 |access-date=October 27, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141029235623/http://variety.com/2014/tv/news/the-flash-premiere-stands-as-most-watched-cw-telecast-ever-1201340371/ |archive-date=October 29, 2014 }}</ref>

The Canadian premiere was watched by 3.11 million viewers, making it the most-watched broadcast that night and the second for that week.<ref>{{cite web|url=http://assets.numeris.ca/Downloads/October%206-October%2012,%202014%20(National).pdf |title=Top 30 Programs (October 6–12, 2014) |work=Numeris |date=October 21, 2014 |access-date=February 20, 2015 |url-status=live |archive-url=https://web.archive.org/web/20141022153930/http://assets.numeris.ca/Downloads/October%206-October%2012%2C%202014%20%28National%29.pdf |archive-date=October 22, 2014 }}</ref> In the United Kingdom, the premiere was the fourth highest-rated broadcast of the week and the eleventh of that month, with 1.53 million viewers.<ref>{{cite web|url=http://www.barb.co.uk/whats-new/weekly-top-30? |title=Weekly Top 30 |publisher=Broadcasters' Audience Research Board |access-date=February 20, 2015 |url-status=live |archive-url=https://web.archive.org/web/20101215200025/http://www.barb.co.uk/report/weeklyTopProgrammesOverview |archive-date=December 15, 2010 }} Note: The ratings must be searched for.</ref><ref>{{cite web|url=http://www.barb.co.uk/whats-new/monthly-top-30? |title=Monthly Top 30 |publisher=Broadcasters' Audience Research Board |access-date=February 20, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150220204506/http://www.barb.co.uk/whats-new/monthly-top-30 |archive-date=February 20, 2015 }} Note: The ratings must be searched for.</ref> The timeshifted version got 82,000 viewers.<ref>{{cite web|url=http://www.barb.co.uk/whats-new/weekly-top-10? |title=Weekly Top 10 |publisher=Broadcasters' Audience Research Board |access-date=February 20, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20140718204656/http://www.barb.co.uk/whats-new/weekly-top-10 |archive-date=July 18, 2014 }} Note: The ratings must be searched for.</ref> The premiere in Australia was the most-watched broadcast on pay television, with 129,000 viewers tuning in.<ref>{{cite web|url=http://www.tvtonight.com.au/2014/12/wednesday-3-december-2014.html |title=Wednesday 3 December 2014 |date=December 4, 2014 |last=Knox |first=David |website=TV Tonight |access-date=February 20, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150220204907/http://www.tvtonight.com.au/2014/12/wednesday-3-december-2014.html |archive-date=February 20, 2015 }}</ref>

The first season finished as the 118th ranked show, with an average viewership of 4.62 million,<ref>{{cite web|url=https://deadline.com/2015/05/2014-15-full-tv-season-ratings-shows-rankings-1201431167/ |title=2014-15 Full TV Season Ratings: Rankings For All Shows - Deadline |author=Lisa de Moraes |website=[[Deadline Hollywood]] |access-date=April 1, 2016 |url-status=dead |archive-url=https://web.archive.org/web/20150522054915/http://deadline.com/2015/05/2014-15-full-tv-season-ratings-shows-rankings-1201431167/ |archive-date=May 22, 2015 }}</ref> helping to deliver The CW's most watched season in seven years.<ref name="CW2014-15">{{cite web|url=http://tvbythenumbers.zap2it.com/network-press-releases/the-cw-delivers-its-most-watched-season-in-7-years/403500/|title=The CW Delivers its Most Watched Season in 7 Years|last=Baron|first=Steve|work=[[TV by the Numbers]]|date=May 13, 2015|access-date=November 12, 2016|archive-url=https://web.archive.org/web/20170605153534/http://tvbythenumbers.zap2it.com/network-press-releases/the-cw-delivers-its-most-watched-season-in-7-years/403500/|archive-date=June 5, 2017|url-status=dead}}</ref> ''The Flash'' finished the season as the most watched series ever on The CW with 5.85 million viewers, and also the highest rated series among men 18–49 (2.8 rating) and men 18+ ever on the network.<ref name="CW2014-15"/>

=== Critical response ===
Season 1 of ''The Flash'' received generally positive reviews from critics. The [[review aggregator]] website [[Rotten Tomatoes]] reported a 92% approval rating with an average rating of 7.75/10 based on 63 reviews. The website's consensus reads, "''The Flash'' benefits from its purposefully light atmosphere, making it a superhero show uniquely geared toward genre fans as well as novices."<ref>{{cite web|url=https://www.rottentomatoes.com/tv/flash/s01/ |title=THE FLASH: SEASON 1 |website=Rotten Tomatoes |access-date=February 26, 2020 |url-status=live |archive-url=https://web.archive.org/web/20141020211822/http://www.rottentomatoes.com/tv/flash/s01/ |archive-date=October 20, 2014 }}</ref> [[Metacritic]], which uses a weighted average, assigned a score of 73 out of 100, based on 27 reviews, indicating "generally favorable reviews".<ref>{{cite web|url=https://www.metacritic.com/tv/the-flash-2014 |title=The Flash (2014) : Season 1 |publisher=CBS |work=Metacritic |access-date=October 21, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141022234643/http://www.metacritic.com/tv/the-flash-2014 |archive-date=October 22, 2014 }}</ref>

[[IGN]]'s Eric Goldman and Joshua Yehl praised the show's premise and cast after viewing a press screening copy of the pilot. Goldman and Yehl favorably compared it to ''Arrow'', stating that ''The Flash'' progresses with a confidence that ''Arrow'' did not get until later in the series.<ref name="IGNPilotThoughts">{{cite AV media|url=https://www.ign.com/videos/2014/06/27/the-flash-first-reaction-to-the-pilot-ign-conversation |title=The Flash – First Reaction to the Pilot |publisher=[[IGN]] |date=June 26, 2014 |access-date=June 28, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140627051405/http://www.ign.com/videos/2014/06/27/the-flash-first-reaction-to-the-pilot-ign-conversation |archive-date=June 27, 2014 }}</ref> Reviews for the series became increasingly positive as the season progressed, with the finale receiving critical acclaim. 

Noel Murray of [[The A.V. Club]] gave the season a B+ overall, giving praise to the pacing of the plot, the performances of the cast and the special effects, and also pointing out the series' boldness to embrace its comic book influences, something that conventional superhero shows tend not to do.<ref name="AVClubS1">{{cite web|url=https://www.avclub.com/review/flashs-first-season-brought-fun-back-live-action-s-219446 |last=Murray |first=Noel |title=The Flash's first season brought the fun back to live-action superheroes |publisher=The Onion A.V. Club |date=May 19, 2015 |access-date=June 12, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150612101405/http://www.avclub.com/review/flashs-first-season-brought-fun-back-live-action-s-219446 |archive-date=June 12, 2015 }}</ref> Weekly episode reviewer Scott Von Doviak gave consistently high ratings to the season and awarded the season finale a perfect A grade, calling the episode "richly satisfying" and also commending the show for "[capturing] the essence of its source material in a fun, light-on-its-feet way that few other comic book adaptations have managed." He also gave high praise to the emotional value and performances of the cast, as well as the cliffhanger and multiple easter eggs found in the episode.<ref name="S1FinaleAVClub">{{cite web|url=https://www.avclub.com/tvclub/flash-fast-enough-219671 |title=The Flash: "Fast Enough" |last=Von Doviak |first=Scott |publisher=The Onion A.V. Club |date=May 19, 2015 |access-date=June 12, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150614214116/http://www.avclub.com/tvclub/flash-fast-enough-219671 |archive-date=June 14, 2015 }}</ref>
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* https://collider.com/the-flash-season-one-review/
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===Accolades===
{{Main|List of awards and nominations received by The Flash}}
''The Flash'' was included on multiple Best/Top TV Shows of 2014 lists, ranking on ''[[NPR]]'' and ''[[Omaha World-Herald]]''{{'}}s (7th), and ''[[Film School Rejects]]''{{'}} (10th).<ref>{{cite web |title=Best of 2014: Television Critic Top Ten Lists |work=Metacritic |url=https://www.metacritic.com/feature/tv-critics-pick-10-best-tv-shows-of-2014 |date=December 9, 2014 |url-status=live |archive-url=https://web.archive.org/web/20151106015332/http://www.metacritic.com/feature/tv-critics-pick-10-best-tv-shows-of-2014 |archive-date=November 6, 2015}}</ref> In its first season, ''The Flash'' was nominated for 35 awards, including an [[Primetime Emmy Awards|Emmy]] nomination for [[Primetime Emmy Award for Outstanding Special Visual Effects|Outstanding Special Visual Effects]] for the episode "Grodd Lives",<ref name="2015EmmyNom"/> and winning nine. The show was nominated for four [[Saturn Awards]], winning [[Saturn Award for Best Superhero Adaptation Television Series|Best Superhero Adaption Television Series]] and Wentworth Miller winning for [[Saturn Award for Best Guest Starring Role on Television|Best Guest Star on Television]].<ref name="41st Saturn Awards" /> Gustin was honored with the Breakthrough Performance Saturn Award at the ceremony for his electrifying performance as Barry Allen/The Flash.<ref name="GrantSaturn"/> The series received eight [[Leo Awards]] nominations, including Best Dramatic Series and winning Best Visual Effects in a Dramatic Series for the episode "Going Rogue".<ref name="2015 Leo Awards" /> It also won the [[People's Choice Awards|People's Choice Award]] for "Favorite New TV Drama" for the 2014–15 season.<ref name="PeopleChoiceAwards"/> ''[[The Atlantic]]'' named the season finale, "Fast Enough" one of the best television episodes of 2015.<ref name="AtlanticBest2015">{{cite web|url=https://www.theatlantic.com/entertainment/archive/2015/12/the-best-television-episodes-of-2015/421053/ |title=The Best Television Episodes of 2015 |last=Sims |first=David |work=[[The Atlantic]] |date=December 18, 2015 |access-date=December 20, 2015 |archive-url=https://web.archive.org/web/20151220224758/http://www.theatlantic.com/entertainment/archive/2015/12/the-best-television-episodes-of-2015/421053/ |archive-date=December 20, 2015 |url-status=live }}</ref>
<!-- * https://collider.com/best-tv-episodes-of-2015-so-far/#the-flash-season-1-finale-fast-enough
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{{Awards table|caption=Awards and nominations for ''The Flash'' season 1|5}}
|-
! scope="row" rowspan="2" | 2014
| [[Visual Effects Society Awards 2014|Visual Effects Society Awards]]
| Outstanding Visual Effects in a Visual Effects-Driven Photoreal/Live Action Broadcast Program
| [[Armen V. Kevorkian]], James Baldanzi, Jeremy Jozwick, Andranik Taranyan
| {{nom}}
| <ref>{{cite news |title=Previous VES Awards |url=https://www.visualeffectssociety.com/awards/ves |access-date=July 16, 2015 |publisher=Visual Effects Society |url-status=dead |archive-url=https://web.archive.org/web/20150717173318/https://www.visualeffectssociety.com/awards/ves |archive-date=July 17, 2015  }}</ref>
|-
| [[TV Guide Award]]
| Favorite New Show
| ''The Flash''
| {{won}}
| <ref>{{cite web|title=TV Guide Awards |url=https://www.imdb.com/event/ev0000664/ |website=IMDB |access-date=July 28, 2016 |url-status=live |archive-url=https://web.archive.org/web/20160430065645/http://www.imdb.com/event/ev0000664/ |archive-date=April 30, 2016 }}</ref>
|-
! scope="row" rowspan="28" | 2015
| [[41st People's Choice Awards|People's Choice Awards]]
| Favorite New TV Drama
| ''The Flash''
| {{won}}
| <ref name="PeopleChoiceAwards">{{cite magazine|title=People's Choice Awards 2015: The winner's list |url=http://popwatch.ew.com/2015/01/07/peoples-choice-awards-2015-the-winners-list/ |magazine=Entertainment Weekly |access-date=January 8, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150108042901/http://popwatch.ew.com/2015/01/07/peoples-choice-awards-2015-the-winners-list/ |archive-date=January 8, 2015 }}</ref>
|-
| rowspan="2" | [[2015 Kids' Choice Awards|Kids' Choice Awards]]
| Favorite Family TV Show
| ''The Flash''
| {{nom}}
| <ref name="2015 Kids' Choice Awards">{{cite magazine|title=Kids' Choice Awards: Complete List of Winners |url=http://www.usmagazine.com/entertainment/news/kids-choice-awards-2015-complete-list-of-winners-2015283/ |magazine=US Magazine |access-date=June 5, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150502092422/http://www.usmagazine.com/entertainment/news/kids-choice-awards-2015-complete-list-of-winners-2015283 |archive-date=May 2, 2015 }}</ref>
|-
| Favorite TV Actor
| [[Grant Gustin]]
| {{nom}}
| <ref name="2015 Kids' Choice Awards" />
|-
| rowspan="4" | [[41st Saturn Awards|Saturn Awards]]
| [[Saturn Award for Best Superhero Adaptation Television Series|Best Superhero Adaption Television Series]]
| ''The Flash''
| {{won}}
| <ref name="41st Saturn Awards">{{cite magazine|title=2015 Saturn Awards: Captain America: Winter Soldier, Walking Dead lead nominees |url=https://www.ew.com/2015/03/03/saturn-awards-captain-america-walking-dead/ |magazine=Entertainment Weekly |access-date=June 5, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150627024136/http://www.ew.com/2015/03/03/saturn-awards-captain-america-walking-dead |archive-date=June 27, 2015 }}</ref><br/><ref name="GrantSaturn">{{cite news|title=Saturn Awards: Noah Wyle and Grant Gustin among special honorees |url=http://herocomplex.latimes.com/tv/saturn-awards-noah-wyle-and-grant-gustin-among-special-honorees/ |newspaper=Los Angeles Times |date=April 29, 2015 |access-date=October 29, 2016 |url-status=live |archive-url=https://web.archive.org/web/20170430052855/http://herocomplex.latimes.com/tv/saturn-awards-noah-wyle-and-grant-gustin-among-special-honorees/ |archive-date=April 30, 2017 }}</ref>
|-
| Breakthrough Performance
| Grant Gustin
| {{won}}
| <ref name="41st Saturn Awards" />
|-
| [[Saturn Award for Best Actor on Television|Best Actor on Television]]
| Grant Gustin
| {{nom}}
| <ref name="41st Saturn Awards" />
|-
| [[Saturn Award for Best Guest Starring Role on Television|Best Guest Star on Television]]
| [[Wentworth Miller]]
| {{won}}
| <ref name="41st Saturn Awards" />
|-
| rowspan="8" | [[Leo Awards]]
| Best Dramatic Series
| ''The Flash''
| {{nom}}
| <ref name="2015 Leo Awards">{{cite news|title=Leo Awards, Winners by Program |url=http://www.leoawards.com/2015/winners/by_name.php |access-date=July 16, 2015 |publisher=Leo Awards |url-status=live |archive-url=https://web.archive.org/web/20160822064709/http://www.leoawards.com/2015/winners/by_name.php |archive-date=August 22, 2016 }}</ref>
|-
| Best Direction in a Dramatic Series
| [[Glen Winter]]
| {{nom}}
| <ref name="2015 Leo Awards" />
|-
| Best Cinematography in a Dramatic Series
| C. Kim Miles
| {{nom}}
| <ref name="2015 Leo Awards" />
|-
| Best Visual Effects in a Dramatic Series
| For episode "Going Rogue"
| {{won}}
| <ref name="2015 Leo Awards" />
|-
| Best Production Design in a Dramatic Series
| Tyler Bishop Harron
| {{nom}}
| <ref name="2015 Leo Awards" />
|-
| Best Make-Up in a Dramatic Series
| Tina Louise Teoli
| {{nom}}
| <ref name="2015 Leo Awards" />
|-
| Best Hairstyling in a Dramatic Series
| Sarah Koppes
| {{nom}}
| <ref name="2015 Leo Awards" />
|-
| Best Guest Performance by a Female in a Dramatic Series
| [[Emily Bett Rickards]]
| {{nom}}
| <ref name="2015 Leo Awards" />
|-
| Publicists Awards
| Maxwell Weinberg Award – Television
| Bonanza Productions, [[Berlanti Productions]] and [[Warner Bros. Television]]
| {{nom}}
| <ref>{{cite news|title=Deadline's Mike Fleming Among Publicists Guild Nominees |url=https://deadline.com/2015/01/publicists-guild-awards-2015-nominees-full-list-1201359382/ |access-date=July 16, 2015 |website=[[Deadline Hollywood]] |url-status=live |archive-url=https://web.archive.org/web/20170315145210/http://deadline.com/2015/01/publicists-guild-awards-2015-nominees-full-list-1201359382/ |archive-date=March 15, 2017 }}</ref>
|-
| [[31st TCA Awards|TCA Awards]]
| [[TCA Award for Outstanding New Program|Outstanding New Program]]
| ''The Flash''
| {{nom}}
| <ref>{{cite web |url=http://tvbythenumbers.zap2it.com/2015/06/04/2015-tca-award-nominees-include-game-of-thrones-empire-the-americans-more/412506/ |title=2015 TCA Award Nominees Include 'Game of Thrones', 'Empire', 'The Americans' & More |first=Amanda |last=Kondolojy |work=[[TV by the Numbers]] |date=June 4, 2015 |access-date=June 5, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20150605155212/http://tvbythenumbers.zap2it.com/2015/06/04/2015-tca-award-nominees-include-game-of-thrones-empire-the-americans-more/412506/ |archive-date=June 5, 2015 }}</ref>
|-
| rowspan="6" | [[2015 Teen Choice Awards|Teen Choice Awards]]
| [[Teen Choice Award for Choice TV Actress Fantasy/Sci-Fi|Choice TV Actress: Fantasy/Sci-Fi]]
| [[Danielle Panabaker]]
| {{nom}}
| <ref>{{cite web|url=http://hollywoodlife.com/2015/06/09/teen-choice-awards-nominations-zayn-malik-one-direction-2015-nominees-full-list/ |title=Teen Choice Awards Pit One Direction Against Zayn Malik |last=Longeretta |first=Emily |publisher=Hollywood Life |date=June 9, 2015 |access-date=June 9, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150610030449/http://hollywoodlife.com/2015/06/09/teen-choice-awards-nominations-zayn-malik-one-direction-2015-nominees-full-list/ |archive-date=June 10, 2015 }}</ref>
|-
| rowspan="2" | Choice TV: Breakout Star
| Grant Gustin
| {{won}}
| <ref name="2015 Teen Choice Awards">{{cite web |title=Wave 2 Nominees |url=http://www.teenchoice.com/article/wave-2-nominees |work=[[Teen Choice]] |date=July 7, 2015 |access-date=July 9, 2015 |url-status=dead |archive-url=https://web.archive.org/web/20160411172500/http://www.teenchoice.com/article/wave-2-nominees |archive-date=April 11, 2016  }}</ref>
|-
| [[Candice Patton]]
| {{nom}}
| <ref name="2015 Teen Choice Awards" />
|-
| Choice TV: Chemistry
| Grant Gustin and Candice Patton
| {{nom}}
| <ref name="2015 Teen Choice Awards" />
|-
| Choice TV: Liplock
| Grant Gustin and Candice Patton
| {{nom}}
| <ref name="2015 Teen Choice Awards" />
|-
| [[Teen Choice Award for Choice TV - Villain|Choice TV: Villain]]
| [[Tom Cavanagh]]
| {{nom}}
| <ref name="2015 Teen Choice Awards" />
|-
| [[Hugo Awards]]
| Best Dramatic Presentation – Short Form
| For the episode "Pilot"
| {{nom}}
| <ref name="HugoAward">{{cite web|url=http://www.thehugoawards.org/hugo-history/2015-hugo-awards/ |title=2015 Hugo Awards |publisher=World Science Fiction Society |date=April 4, 2015 |access-date=September 5, 2015 |archive-url=https://web.archive.org/web/20150905132816/http://www.thehugoawards.org/hugo-history/2015-hugo-awards/ |archive-date=September 5, 2015 |url-status=live}}</ref>
|-
| [[67th Primetime Creative Arts Emmy Awards|Primetime Emmy Award]]
| [[Primetime Emmy Award for Outstanding Special Visual Effects|Outstanding Special Visual Effects]]
| For episode "Grodd Lives"
| {{nom}}
| <ref name="2015EmmyNom">{{cite web|url=https://deadline.com/2015/07/emmy-award-nominations-2015-full-list-1201476759/ |title=Emmy Nominations 2015 – Full List |last=Hipes |first=Patrick |website=[[Deadline Hollywood]] |date=July 16, 2015 |access-date=July 16, 2015 |archive-url=https://web.archive.org/web/20150716220344/http://deadline.com/2015/07/emmy-award-nominations-2015-full-list-1201476759/ |archive-date=July 16, 2015 |url-status=live}}</ref>
|-
| rowspan="2" | [[IGN|IGN Awards]]
| Best TV Series
| ''The Flash''
| {{nom}}
| <ref>{{cite web|url=https://www.ign.com/lists/best-of-television/tv-series|title=Best TV Series - Best of 2014: Television|website=[[IGN]]|archive-date=October 28, 2015 |archive-url=https://web.archive.org/web/20151028162801/http://www.ign.com/lists/best-of-television/tv-series|access-date=December 15, 2016}}</ref>
|-
| Best Comic Book Adaptation TV
| ''The Flash''
| {{won}}
| <ref>{{cite web|url=https://www.ign.com/lists/best-of-television/tv-comic-adaptation|title=Best Comic Book Adaptation TV - Best of 2014: Television|website=[[IGN]]|archive-date=May 7, 2016 |archive-url=https://web.archive.org/web/20160507210040/http://www.ign.com/lists/best-of-television/tv-comic-adaptation|access-date=December 15, 2016}}</ref>
|-
| [[Poppy Awards]]
| Best Actor, Drama
| Grant Gustin
| {{nom}}
| <ref>{{cite magazine|url=https://www.ew.com/gallery/2015-ewwy-winners/2270778_best-actor-drama |title=EWwy Awards 2015: Meet Your Winners - Best Actor, Drama |magazine=[[Entertainment Weekly]] |date=August 11, 2015 |access-date=December 15, 2016 |url-status=live |archive-url=https://web.archive.org/web/20161007172739/http://www.ew.com/gallery/2015-ewwy-winners/2270778_best-actor-drama |archive-date=October 7, 2016 }}</ref>
|-
|}

==Notes==
{{Notelist}}

==References==
{{Reflist|refs =

<ref name="S2Renew">{{cite web |url=http://tvbythenumbers.zap2it.com/2015/01/11/arrow-jane-the-virgin-reign-the-100-the-flash-the-originals-the-vampire-diaries-renewed-by-the-cw/349027/ |title='Arrow', 'Jane The Virgin', 'Reign', 'The 100', 'The Flash', 'Supernatural, 'The Originals' & 'The Vampire Diaries' Renewed by the CW |work=[[TV by the Numbers]] |date=January 11, 2015 |access-date=January 11, 2015 |last=Bibel |first=Sara |url-status=dead |archive-url=https://web.archive.org/web/20150111232833/http://tvbythenumbers.zap2it.com/2015/01/11/arrow-jane-the-virgin-reign-the-100-the-flash-the-originals-the-vampire-diaries-renewed-by-the-cw/349027/ |archive-date=January 11, 2015 }}</ref>

<ref name="Gustin">{{cite web|url=https://hollywoodreporter.com/live-feed/glees-grant-gustin-set-as-625751 |title='Glee' Star Set as CW's Flash |last=Goldberg |first=Lesley |work=[[The Hollywood Reporter]] |date=September 13, 2013 |access-date=September 13, 2013 |url-status=live |archive-url=https://web.archive.org/web/20130914062206/http://www.hollywoodreporter.com/live-feed/glees-grant-gustin-set-as-625751 |archive-date=September 14, 2013 }}</ref>

<ref name="Patton">{{cite web|url=https://deadline.com/2014/02/candice-patton-flash-pilot-cw/ |title=Candice Patton Cast in CW Pilot 'The Flash' |first=Nellie |last=Andreeva |website=[[Deadline Hollywood]] |date=February 4, 2014 |access-date=February 4, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140207083210/http://www.deadline.com/2014/02/candice-patton-flash-pilot-cw/ |archive-date=February 7, 2014 }}</ref>

<ref name="Cosnett/Panabaker">{{cite web|last=Andreeva |first=Nellie |title='Rick Cosnett & Danielle Panabaker To Co-Star in CW Pilot 'The Flash' |url=https://deadline.com/2014/01/flash-casting-rick-cosnett-danielle-panabaker-cw/ |website=[[Deadline Hollywood]] |date=January 24, 2014 |access-date=January 24, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140126115958/http://www.deadline.com/2014/01/flash-casting-rick-cosnett-danielle-panabaker-cw/ |archive-date=January 26, 2014 }}</ref>

<ref name="Valdes">{{cite web|url=https://www.deadline.com/2014/02/the-flash-carlos-valdes-elena-kampouris-odyssey/ |title=Carlos Valdes Cast in CW's 'The Flash', Elena Kampouris in NBC's 'Odyssey' |first=Nellie |last=Andreeva |website=[[Deadline Hollywood]] |date=February 4, 2014 |access-date=February 4, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140210082531/http://www.deadline.com/2014/02/the-flash-carlos-valdes-elena-kampouris-odyssey/ |archive-date=February 10, 2014 }}</ref>

<ref name="Cavanagh">{{cite web|url=https://www.thewrap.com/ed-star-tom-cavanagh-joins-cws-flash-pilot/ |title='Ed' Star Tom Cavanagh Joins CW's 'Flash' Pilot |last=Nededog |first=Jethro |website=[[The Wrap]] |date=February 10, 2014 |access-date=February 10, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140305084244/http://www.thewrap.com/ed-star-tom-cavanagh-joins-cws-flash-pilot/ |archive-date=March 5, 2014 }}</ref>

<ref name="Martin">{{cite web|title=CW's 'Flash' Adds Jesse L. Martin |url=https://www.hollywoodreporter.com/live-feed/cws-flash-adds-jesse-l-672891 |last=Goldberg |first=Lesley |work=[[The Hollywood Reporter]] |date=January 21, 2014 |access-date=January 21, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140122062219/http://www.hollywoodreporter.com/live-feed/cws-flash-adds-jesse-l-672891 |archive-date=January 22, 2014 }}</ref>

<ref name="Firestorm">{{cite web|url=https://variety.com/2014/tv/news/the-flash-robbie-amell-firestorm-ronnie-raymond-1201259682/ |title='The Flash': Robbie Amell Cast as Firestorm |last=Prudom |first=Laura |work=Variety |date=July 9, 2014 |access-date=July 9, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140713043200/http://variety.com/2014/tv/news/the-flash-robbie-amell-firestorm-ronnie-raymond-1201259682/ |archive-date=July 13, 2014 }}</ref>

<ref name="AmellPilot">{{cite web|url=https://www.tvguide.com/News/Flash-Arrow-Crossover-1081785.aspx |title=Exclusive: The Flash's Pilot Features an Arrow Crossover! |work=TV Guide |date=May 15, 2014 |access-date=May 15, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140517125502/http://www.tvguide.com/News/Flash-Arrow-Crossover-1081785.aspx |archive-date=May 17, 2014 }}</ref>

<ref name="Brown">{{cite web|url=https://www.hollywoodreporter.com/live-feed/flash-clancy-brown-wade-eiling-724233 |title=Clancy Brown has joined The CW's "Arrow" spinoff as a powerful comic-book character. |last=Ng |first=Philiana |work=[[The Hollywood Reporter]] |date=August 8, 2014 |access-date=August 8, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140809023248/http://www.hollywoodreporter.com/live-feed/flash-clancy-brown-wade-eiling-724233 |archive-date=August 9, 2014 }}</ref>

<ref name="Garber">{{cite web|url=https://deadline.com/2014/10/the-flash-casting-victor-garber-dr-martin-stein-848514/ |title='The Flash' Casting: Victor Garber To Recur As Dr. Martin Stein |website=[[Deadline Hollywood]] |date=October 9, 2014 |access-date=October 9, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141010043526/http://deadline.com/2014/10/the-flash-casting-victor-garber-dr-martin-stein-848514/ |archive-date=October 10, 2014 }}</ref>

<ref name="Harrison">{{cite web|url=https://deadline.com/2014/02/charlie-weber-cast-in-how-to-get-away-the-flash-gets-mother/ |title=Charlie Weber Cast In 'How To Get Away'; The Flash Gets Mother |last=Andreeva |first=Nellie |website=[[Deadline Hollywood]] |date=February 24, 2014 |access-date=February 25, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140302043258/http://www.deadline.com/2014/02/charlie-weber-cast-in-how-to-get-away-the-flash-gets-mother/ |archive-date=March 2, 2014 }}</ref>

<ref name="Howarth">{{cite web|url=https://deadline.com/2014/10/roger-howarth-cast-the-flash-ryan-hurst-bates-motel-sons-of-anarchy-855864/ |title=Roger Howarth Joins ''The Flash''; Ryan Hurst In ''Bates Motel'' |website=[[Deadline Hollywood]] |date=October 20, 2014 |access-date=March 17, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150320153358/http://deadline.com/2014/10/roger-howarth-cast-the-flash-ryan-hurst-bates-motel-sons-of-anarchy-855864/ |archive-date=March 20, 2015 }}</ref>

<ref name="Jow">{{cite web|url=http://www.bleedingcool.com/2014/10/27/malese-jow-added-to-the-flash-as-potential-love-interest/ |title=Malese Jow Added to the Flash As Potential Love Interest |first=Dan |last=Wickline |work=bleedingcool.com |date=October 27, 2014 |access-date=January 28, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150120172208/http://www.bleedingcool.com/2014/10/27/malese-jow-added-to-the-flash-as-potential-love-interest/ |archive-date=January 20, 2015 }}</ref>

<ref name="Letscher">{{cite web|url=https://www.hollywoodreporter.com/live-feed/flash-harrison-wells-killed-by-785551 |title=''The Flash'' EP and Mark Hamill on Harrison Wells Shocker, 'Star Wars' Shoutout |last=Couch |first=Aaron |work=[[The Hollywood Reporter]] |date=March 31, 2015 |access-date=April 1, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150403234831/http://www.hollywoodreporter.com/live-feed/flash-harrison-wells-killed-by-785551 |archive-date=April 3, 2015 }}</ref>

<ref name="List">{{cite web|url=http://tvline.com/2014/12/16/the-flash-season-1-cast-peyton-list-lisa-snart/ |title='The Flash' Season 1 Cast – Peyton List as Lisa Snart |last=Gelman |first=Vlada |work=[[TVLine]] |date=December 16, 2014 |access-date=October 21, 2016 |url-status=live |archive-url=https://web.archive.org/web/20170314174656/https://tvline.com/2014/12/16/the-flash-season-1-cast-peyton-list-lisa-snart/ |archive-date=March 14, 2017 }}</ref>

<ref name="McIntyre">{{cite magazine|url=http://insidetv.ew.com/2015/01/07/flash-liam-mcintyre-weather-wizard/ |title='The Flash' taps Liam McIntyre as new Weather Wizard |last=Abrams |first=Natalie |magazine=Entertainment Weekly |date=January 7, 2015 |access-date=January 7, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150108020238/http://insidetv.ew.com/2015/01/07/flash-liam-mcintyre-weather-wizard/ |archive-date=January 8, 2015 }}</ref>

<ref name="Miller">{{cite web|url=https://www.ign.com/articles/2014/07/18/the-flash-prison-break-star-to-play-captain-cold |title=The Flash: Prison Break Star To Play Captain Cold |last=Fowler |first=Matt |website=[[IGN]] |date=July 18, 2014 |access-date=July 18, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140720224447/http://www.ign.com/articles/2014/07/18/the-flash-prison-break-star-to-play-captain-cold |archive-date=July 20, 2014 }}</ref>

<ref name="Pays">{{cite web|url=https://www.hollywoodreporter.com/live-feed/flash-amanda-pays-reprising-tina-732946 |title=The CW's 'The Flash' Recruits Original Star for Flashy Reunion |last=Ng |first=Philiana |work=[[The Hollywood Reporter]] |date=September 15, 2014 |access-date=September 15, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140916013437/http://www.hollywoodreporter.com/live-feed/flash-amanda-pays-reprising-tina-732946 |archive-date=September 16, 2014 }}</ref>

<ref name="Purcell">{{cite web|url=https://www.hollywoodreporter.com/live-feed/flash-dominic-purcell-heat-wave-729700 |title='The Flash' Stages 'Prison Break' Reunion (Exclusive) |last=Ng |first=Philiana |work=[[The Hollywood Reporter]] |date=September 3, 2014 |access-date=September 3, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140905042259/http://www.hollywoodreporter.com/live-feed/flash-dominic-purcell-heat-wave-729700 |archive-date=September 5, 2014 }}</ref>

<ref name="Ramsey">{{cite web|url=http://www.thefutoncritic.com/listings/20141113cw01/|title=Listing for ''Flash, The'': (#108) 'Flash vs. Arrow'|work=[[The Futon Critic]]|access-date=April 12, 2016|archive-url=https://archive.today/20161215112248/http://www.thefutoncritic.com/listings/20141113cw01/|archive-date=December 15, 2016|url-status=live}}</ref>

<ref name="Rickards">{{cite web|url=https://www.tvguide.com/News/Flash-Wentworth-Miller-Arrow-Crossovers-1084633.aspx |title=The Flash Casts Wentworth Miller, Plots Arrow Crossovers |last=Abrams |first=Natalie |work=TV Guide |date=July 18, 2014 |access-date=July 18, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140720034146/http://www.tvguide.com/News/Flash-Wentworth-Miller-Arrow-Crossovers-1084633.aspx |archive-date=July 20, 2014 }}</ref>

<ref name="Sabongui">{{cite web|url=https://hollywoodreporter.com/live-feed/flash-patrick-sabongui-joins-as-686729 |title=The CW's 'Flash' Adds Police Captain |last=Ng |first=Philiana |work=[[The Hollywood Reporter]] |date=March 7, 2014 |access-date=March 7, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140308003807/http://www.hollywoodreporter.com/live-feed/flash-patrick-sabongui-joins-as-686729 |archive-date=March 8, 2014 }}</ref>

<ref name="Shipp">{{cite web|url=https://www.hollywoodreporter.com/live-feed/flash-barry-allens-father-john-wesley-shipp-707359 |title='Flash': John Wesley Shipp's Secret Character Revealed |last=Ng |first=Philiana |work=[[The Hollywood Reporter]] |date=May 27, 2014 |access-date=May 28, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140530033009/http://www.hollywoodreporter.com/live-feed/flash-barry-allens-father-john-wesley-shipp-707359 |archive-date=May 30, 2014 }}</ref>

<ref name="Anthony">{{cite web|url=https://comicbook.com/2014/11/14/the-flash-casts-tomorrowlands-paul-anthony-as-arrow-crossover-vi/ |title=The Flash Casts Tomorrowland's Paul Anthony As Arrow Crossover Villain Ray Bivolo |last=Burlingame |first=Russ |publisher=[[ComicBook.com]] |date=November 13, 2014 |access-date=November 20, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141116165441/http://comicbook.com/2014/11/14/the-flash-casts-tomorrowlands-paul-anthony-as-arrow-crossover-vi |archive-date=November 16, 2014 }}</ref>

<ref name="Baccarin">{{cite news|url=http://tvline.com/2014/11/26/the-flash-morena-baccarin-voices-gideon/ |title=Flash Scoop: The Voice of Gideon Is... |last=Mitovich |first=Matt Webb |work=[[TVLine]] |date=November 26, 2014 |url-status=live |archive-url=https://web.archive.org/web/20160216205046/http://tvline.com/2014/11/26/the-flash-morena-baccarin-voices-gideon/ |archive-date=February 16, 2016 }}</ref>

<ref name="ep119">{{cite web|url=http://www.thefutoncritic.com/listings/20150402cw03/|title=Episode Title: (#119) "Who is Harrison Wells?"|work=The Futon Critic|access-date=April 2, 2015}}</ref>

<ref name="Blair">{{cite web|url=http://www.ibtimes.com/flash-season-1-spoilers-eobard-thawne-backstory-revealed-episode-17-what-happened-1865832 |title=''The Flash'' Season 1 Spoilers: Eobard Thawne Backstory Revealed In Episode 17; What Happened In 'Tricksters'? [RECAP] |last=Garofalo |first=Alex |website=[[International Business Times]] |date=March 31, 2015 |access-date=April 1, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150402234131/http://www.ibtimes.com/flash-season-1-spoilers-eobard-thawne-backstory-revealed-episode-17-what-happened-1865832 |archive-date=April 2, 2015 }}</ref>

<ref name="Carrigan">{{cite web|url=https://www.ign.com/articles/2014/10/22/the-flash-things-you-cant-outrun-review |title=THE FLASH: "THINGS YOU CAN'T OUTRUN" REVIEW |last=Schedeen |first=Jesse |website=[[IGN]] |date=October 21, 2014 |access-date=October 21, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141022051643/http://www.ign.com/articles/2014/10/22/the-flash-things-you-cant-outrun-review |archive-date=October 22, 2014 }}</ref>

<ref name="D'Ambrosio">{{cite web|url=https://www.yahoo.com/tv/the-flash-recap-tricksters-mark-hamill-115179930095.html |title='The Flash' Recap: At Last... the Joker |last=Chan |first=Robert |publisher=Yahoo! |date=March 31, 2015 |access-date=August 8, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150422215719/https://www.yahoo.com/tv/the-flash-recap-tricksters-mark-hamill-115179930095.html |archive-date=April 22, 2015 }}</ref>

<ref name="Finley">{{cite web|url=http://www.zap2it.com/blogs/zap2it_first_the_flash_star-crossed_greg_finley_girder_tony_woodward-2014-08 |title=Zap2it First: 'The Flash' casts 'Star-Crossed's' Greg Finley as Girder |last=Brown |first=Laurel |publisher=[[Zap2It]] |date=August 20, 2014 |access-date=August 20, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140821102331/http://www.zap2it.com/blogs/zap2it_first_the_flash_star-crossed_greg_finley_girder_tony_woodward-2014-08 |archive-date=August 21, 2014 }}</ref>

<ref name="Frye">{{cite web|url=https://variety.com/2014/tv/news/the-flash-plastique-arrow-wildcast-1201271561/ |title='The Flash,' 'Arrow' Announce New Cast Members |last=Weinstein |first=Shelli |work=Variety |date=July 29, 2014 |access-date=July 29, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140801101149/http://variety.com/2014/tv/news/the-flash-plastique-arrow-wildcast-1201271561/ |archive-date=August 1, 2014 }}</ref>

<ref name="Gonzalez">{{cite web|url=http://tvline.com/2014/12/16/the-flash-season-1-cast-nicholas-gonzalez-cisco-brother-dante/ |title=The Flash Casts Sleepy Hollow Alum Nicholas Gonzalez as Cisco's Brother |last=Gelman |first=Vlada |website=[[TVLine]] |date=December 16, 2014 |access-date=December 17, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141217023725/http://tvline.com/2014/12/16/the-flash-season-1-cast-nicholas-gonzalez-cisco-brother-dante/ |archive-date=December 17, 2014 }}</ref>

<ref name="Graye">{{cite web|url=https://comicbook.com/2015/01/14/the-flash-exclusive-devon-graye-to-play-copycat-trickster-in-mar/ |title=The Flash Exclusive: Devon Graye To Play Copycat Trickster In Mark Hamill's Return |last=Burlingame |first=Russ |publisher=[[ComicBook.com]] |date=January 14, 2015 |access-date=January 15, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150118003201/http://comicbook.com/2015/01/14/the-flash-exclusive-devon-graye-to-play-copycat-trickster-in-mar/ |archive-date=January 18, 2015 }}</ref>

<ref name="Hamill">{{cite web|url=http://www.hitfix.com/whats-alan-watching/exclusive-mark-hamill-to-play-the-trickster-again-on-the-flash |title=Exclusive: Mark Hamill to play the Trickster again on 'The Flash' |publisher=Hitfix |last=Sepinwall |first=Alan |date=December 8, 2014 |url-status=live |archive-url=https://web.archive.org/web/20150809033035/http://www.hitfix.com/whats-alan-watching/exclusive-mark-hamill-to-play-the-trickster-again-on-the-flash |archive-date=August 9, 2015 }}</ref>

<ref name="Hofmann">{{cite web|url=http://www.cwtv.com/shows/the-flash/photos/1-114/0191686097f |title=The Flash Photos – Fallout |access-date=October 7, 2015 |work=[[The CW]] |url-status=live |archive-url=https://web.archive.org/web/20160216052012/http://www.cwtv.com/shows/the-flash/photos/1-114/0191686097f |archive-date=February 16, 2016 }}</ref>

<ref name="Hopkins">{{cite magazine|last1=Abrams |first1=Natalie |title='The Flash' drops a big 'Arrow' bombshell |url=https://www.ew.com/article/2014/12/02/arrow-oliver-baby-daddy |magazine=Entertainment Weekly |access-date=November 30, 2015 |date=December 2, 2014 |url-status=live |archive-url=https://web.archive.org/web/20151219150318/http://www.ew.com/article/2014/12/02/arrow-oliver-baby-daddy |archive-date=December 19, 2015 }}</ref>

<ref name="JonesFlash">{{cite magazine|url=https://www.ew.com/article/2015/03/22/doug-jones-deathbolt-teases-flash-arrow-crossover |title=Doug Jones teases ''The Flash'' appearance |last=Dornbush |first=Jonathan |magazine=Entertainment Weekly |date=March 22, 2015 |access-date=March 22, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150324184202/http://www.ew.com/article/2015/03/22/doug-jones-deathbolt-teases-flash-arrow-crossover |archive-date=March 24, 2015 }}</ref>

<ref name="Kinney">{{cite news|url=http://tvline.com/2015/02/09/the-flash-season-1-cast-emily-kinney-bug-eyed-bandit/ |title=The Flash Enlists Walking Dead Alum Emily Kinney as Atom Foe/Anti-Felicity |first=Vlada |last=Gelman |work=[[TVLine]] |date=February 9, 2015 |access-date=February 9, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150211083953/http://tvline.com/2015/02/09/the-flash-season-1-cast-emily-kinney-bug-eyed-bandit/ |archive-date=February 11, 2015 }}</ref>

<ref name="Knepper">{{cite news|url=http://tvline.com/2014/08/07/flash-arrow-crossover-episode-spoilers-clock-king/ |title=Arrow's [Spoiler] Crosses Over to Flash |last=Swift |first=Andy |work=[[TVLine]] |date=August 7, 2014 |access-date=August 8, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140808111723/http://tvline.com/2014/08/07/flash-arrow-crossover-episode-spoilers-clock-king/ |archive-date=August 8, 2014 }}</ref>

<ref name="Mientus">{{cite web|url=http://tvline.com/2014/10/09/the-flash-pied-piper-gay-andy-mientus-season-1-cast/ |title=The Flash Casts Smash Alum to Play Gay DC Comics Villain Pied Piper |work=[[TVLine]] |date=October 9, 2014 |access-date=October 9, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141011222459/http://tvline.com/2014/10/09/the-flash-pied-piper-gay-andy-mientus-season-1-cast/ |archive-date=October 11, 2014 }}</ref>

<ref name="Oldford">{{cite web|url=https://www.hollywoodreporter.com/live-feed/flash-can-barry-dodge-a-769709 |title=''The Flash'': Can Barry Dodge a Speeding Bullet? (Exclusive Video) |last=Couch |first=Aaron |work=[[The Hollywood Reporter]] |date=February 3, 2015 |access-date=April 20, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150310160555/http://www.hollywoodreporter.com/live-feed/flash-can-barry-dodge-a-769709 |archive-date=March 10, 2015 }}</ref>

<ref name="Renee">{{cite web|url=http://www.comicbookresources.com/article/hawkgirl-other-legends-stars-to-appear-in-the-flash-season-finale |title=HAWKGIRL, OTHER "LEGENDS" STARS TO APPEAR IN "THE FLASH" SEASON FINALE |last=Damore |first=Meagan |website=[[Comic Book Resources]] |date=May 7, 2015 |access-date=May 7, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150509190902/http://www.comicbookresources.com/article/hawkgirl-other-legends-stars-to-appear-in-the-flash-season-finale |archive-date=May 9, 2015 }}</ref>

<ref name="Reventar">{{cite web|url=https://collider.com/the-flash-michael-reventar-interview/ |title=The Flash Michael Reventar Interview |last=Radish |first=Christina |website=[[Collider (website)|Collider]] |date=November 25, 2014 |access-date=November 25, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141209081755/http://collider.com/the-flash-michael-reventar-interview/ |archive-date=December 9, 2014 }}</ref>

<ref name="Roderique">{{cite web|url=http://www.ksitetv.com/news/firestorm-warning-dc-comics-character-jason-rusch-to-appear-on-the-flash-exclusive/46524 |title=Firestorm Warning: DC Comics Character Jason Rusch To Appear On The Flash (Exclusive) |last=Byrne |first=Craig |publisher=KSite TV |date=November 11, 2014 |access-date=November 16, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141113235938/http://www.ksitetv.com/news/firestorm-warning-dc-comics-character-jason-rusch-to-appear-on-the-flash-exclusive/46524 |archive-date=November 13, 2014 }}</ref>

<ref name="Rook">{{cite web|url=http://www.hitfix.com/news/the-flash-trailer-chad-rook-shows-up-as-weather-wizard |title='The Flash' Trailer: Chad Rook shows up as Weather Wizard |last=Sunu |first=Steve |publisher=[[Comic Book Resources]] via [[HitFix]] |date=August 28, 2014 |access-date=October 17, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140912162820/http://www.hitfix.com/news/the-flash-trailer-chad-rook-shows-up-as-weather-wizard |archive-date=September 12, 2014 }}</ref>

<ref name="Palmer">{{cite web|url=https://variety.com/2015/tv/news/arrow-without-oliver-producers-preview-the-rise-of-black-canary-atom-and-brick-1201410918/ |title={{-'}}Arrow' Without Oliver? Producers Preview the Rise of Black Canary, Atom and Brick |work=Variety |date=January 21, 2015 |access-date=January 21, 2015 |url-status=live |archive-url=https://web.archive.org/web/20150122062216/http://variety.com/2015/tv/news/arrow-without-oliver-producers-preview-the-rise-of-black-canary-atom-and-brick-1201410918/ |archive-date=January 22, 2015 }}</ref>

<ref name="Stagg">{{cite web|url=http://www.movieweb.com/news/the-flash-adds-william-sadler-as-simon-stagg |title=The Flash' Adds William Sadler as Simon Stagg |work=Movieweb |date=July 13, 2014 |access-date=July 14, 2014 |url-status=live |archive-url=https://web.archive.org/web/20140715011455/http://www.movieweb.com/news/the-flash-adds-william-sadler-as-simon-stagg |archive-date=July 15, 2014 }}</ref>

<ref name="Multiplex">{{cite web|url=http://bamsmackpow.com/2014/10/14/flash-season-1-episode-2-synopsis-fastest-man-alive/ |title=The Flash, Season 1, Episode 2 Synopsis – "Fastest Man Alive" |last=Tylwalk |first=Nick |work=Bam! Smack! Pow! |publisher=[[FanSided]] |date=October 15, 2014 |access-date=October 17, 2014 |url-status=live |archive-url=https://web.archive.org/web/20141022012034/http://bamsmackpow.com/2014/10/14/flash-season-1-episode-2-synopsis-fastest-man-alive/ |archive-date=October 22, 2014 }}</ref>

<ref name="Grodd">{{cite episode|title=Fallout|series=[[The Flash (2014 TV series)|The Flash]]|network=The CW|credits=[[Stephen Surjik|Steve Surjik]] (director), [[Keto Shimizu]] & Ben Sokolowski (writers)|airdate=February 17, 2015|season=1|number=14}}</ref>

}}

===General references===
{{refbegin}}
<!-- These references will apply to most, if not all, episodes -->
* {{cite web|url=https://www.tvguide.com/tvshows/the-flash/episodes-season-1/644014/|title=''The Flash'' episodes|work=[[TV Guide]]|access-date=March 6, 2017}}
* {{cite web|url=http://www.thefutoncritic.com/showatch/flash/listings/|title=Shows A-Z - ''The Flash'' on CW|website=[[The Futon Critic]]|access-date=March 6, 2017}}
{{refend}}

== External links ==
* {{Official website|http://www.cwtv.com/shows/the-flash}}
* {{IMDb episodes|3107288|The Flash}}

{{The Flash (2014 TV series)}}
{{Arrowverse}}

{{DEFAULTSORT:Flash season 1, The}}
[[Category:2014 American television seasons]]
[[Category:2015 American television seasons]]
[[Category:The Flash (2014 TV series) seasons]]
[[Category:Identity theft in popular culture]]