List of Arrow episodes

Arrow is an American television series, developed by Greg Berlanti, Marc Guggenheim and Andrew Kreisberg, based on the DC Comics character Green Arrow. The series premiered in the United States on October 10, 2012 for The CW television network, and it finished its third season on May 13, 2015. Season one averaged 3.68 million viewers each week, while season two saw an increase to 3.84 million viewers, before increasing again in the third season to 4.17 million viewers. The fourth season saw a drop in ratings, averaging 3.76 million viewers. The first three seasons have been released on DVD to Regions 1, 2 and 4 and on Blu-ray to Regions A and B.

Arrow follows billionaire playboy Oliver Queen (Stephen Amell), who, after five years of being stranded on a hostile island, returns home to his mother, Moira Queen (Susanna Thompson) and sister, Thea Queen (Willa Holland) and becomes a bow and arrow wielding vigilante. Oliver is initially aided by his friends, John Diggle (David Ramsey) and Felicity Smoak (Emily Bett Rickards), and later the aspiring vigilante Roy Harper (Colton Haynes) joins them. In addition, Oliver's team receives help from the Lance family; Laurel (Katie Cassidy), Sara (Caity Lotz), and Quentin (Paul Blackthorne), sharing the goal of bringing justice to Star City (formerly Starling City). The series also features flashbacks in each episode to Oliver's time on the island, and how it shaped him into the man who returned home to fight crime.

The series was renewed for a fifth season in March 2016, scheduled to debut on October 5, 2016.

Series overview

Season	Episodes		Originally aired		Rank	Average viewers (in millions)
			First aired	Last aired
1	23		October 10, 2012 (2012-10-10)	May 15, 2013 (2013-05-15)	130	3.68
2	23		October 9, 2013 (2013-10-09)	May 14, 2014 (2014-05-14)	76	3.84
3	23		October 8, 2014 (2014-10-08)	May 13, 2015 (2015-05-13)	64	4.17
4	23		October 7, 2015 (2015-10-07)	May 25, 2016 (2016-05-25)	115	3.76
5	TBA		October 5, 2016 (2016-10-05)	TBA	TBA	TBA

Episodes

Season 1 (2012–13)

Main article: Arrow (season 1)

Arrow, season 1 episodes

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
1	1	"Pilot"	David Nutter	Story by : Greg Berlanti & Marc Guggenheim Teleplay by : Andrew Kreisberg & Marc Guggenheim	October 10, 2012 (2012-10-10)	296818	4.14
2	2	"Honor Thy Father"	David Barrett	Story by : Greg Berlanti & Marc Guggenheim Teleplay by : Andrew Kreisberg & Marc Guggenheim	October 17, 2012 (2012-10-17)	2J7302	3.55
3	3	"Lone Gunmen"	Guy Bee	Story by : Greg Berlanti & Andrew Kreisberg Teleplay by : Marc Guggenheim & Andrew Kreisberg	October 24, 2012 (2012-10-24)	2J7303	3.51
4	4	"An Innocent Man"	Vince Misiano	Moira Kirland & Lana Cho	October 31, 2012 (2012-10-31)	2J7304	3.05
5	5	"Damaged"	Michael Schultz	Wendy Mericle & Ben Sokolowski	November 7, 2012 (2012-11-07)	2J7305	3.75
6	6	"Legacies"	John Behring	Moira Kirland & Marc Guggenheim	November 14, 2012 (2012-11-14)	2J7306	3.83
7	7	"Muse of Fire"	David Grossman	Story by : Andrew Kreisberg Teleplay by : Geoff Johns & Marc Guggenheim	November 28, 2012 (2012-11-28)	2J7307	3.74
8	8	"Vendetta"	Ken Fink	Beth Schwartz & Andrew Kreisberg	December 5, 2012 (2012-12-05)	2J7308	3.35
9	9	"Year's End"	John Dahl	Story by : Greg Berlanti & Marc Guggenheim Teleplay by : Andrew Kreisberg & Marc Guggenheim	December 12, 2012 (2012-12-12)	2J7309	3.11
10	10	"Burned"	Eagle Egilsson	Moira Kirland & Ben Sokolowski	January 16, 2013 (2013-01-16)	2J7310	3.06
11	11	"Trust But Verify"	Nick Copus	Gabrielle Stanton	January 23, 2013 (2013-01-23)	2J7311	3.14
12	12	"Vertigo"	Wendey Stanzler	Wendy Mericle & Ben Sokolowski	January 30, 2013 (2013-01-30)	2J7312	2.97
13	13	"Betrayal"	Guy Bee	Lana Cho & Beth Schwartz	February 6, 2013 (2013-02-06)	2J7313	2.96
14	14	"The Odyssey"	John Behring	Story by : Greg Berlanti & Andrew Kreisberg Teleplay by : Andrew Kreisberg & Marc Guggenheim	February 13, 2013 (2013-02-13)	2J7314	3.29
15	15	"Dodger"	Eagle Egilsson	Beth Schwartz	February 20, 2013 (2013-02-20)	2J7315	3.15
16	16	"Dead to Rights"	Glen Winter	Geoff Johns	February 27, 2013 (2013-02-27)	2J7316	3.17
17	17	"The Huntress Returns"	Guy Bee	Jake Coburn & Lana Cho	March 20, 2013 (2013-03-20)	2J7317	3.02
18	18	"Salvation"	Nick Copus	Drew Z. Greenberg & Wendy Mericle	March 27, 2013 (2013-03-27)	2J7318	2.65
19	19	"Unfinished Business"	Michael Offer	Bryan Q. Miller & Lindsey Allen	April 3, 2013 (2013-04-03)	2J7319	2.92
20	20	"Home Invasion"	Ken Fink	Ben Sokolowski & Beth Schwartz	April 24, 2013 (2013-04-24)	2J7320	3.10
21	21	"The Undertaking"	Michael Schultz	Jake Coburn & Lana Cho	May 1, 2013 (2013-05-01)	2J7321	2.89
22	22	"Darkness on the Edge of Town"	John Behring	Drew Z. Greenberg & Wendy Mericle	May 8, 2013 (2013-05-08)	2J7322	2.62
23	23	"Sacrifice"	David Barrett	Story by : Greg Berlanti Teleplay by : Marc Guggenheim & Andrew Kreisberg	May 15, 2013 (2013-05-15)	2J7323	2.77

Season 2 (2013–14)

This season was prefaced with a recap episode airing on October 2, 2013, titled "Year One". It featured highlights from season one and a special preview of season two.

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
24	1	"City of Heroes"	John Behring	Story by : Greg Berlanti Teleplay by : Andrew Kreisberg & Marc Guggenheim	October 9, 2013 (2013-10-09)	2J7451	2.74
Following the destruction of the Glades and Tommy's death, Oliver returns to the island alone as penance for failing the city and Tommy. Felicity and Diggle arrive and convince Oliver to return, informing him that Queen Consolidated is under threat of takeover and dissolution by Isabel Rochev. Oliver learns a group of vigilantes, dressed like the Hood, are killing others to take back the Glades. They target Oliver twice before kidnapping Thea. Oliver saves her without killing anyone and leaves the vigilantes for Quentin Lance, who was demoted to patrol officer. Roy is also trying to protect the Glades, and is rescued by an unknown blonde female vigilante. Oliver enlists the help of Walter to save the company. As well, Oliver decides to honor Tommy's memory by becoming a hero of Starling City, and elects to find a new name for his alter-ego. In a flashback, Oliver, Shado, and Slade realize they are not alone on the island following Fyers' demise.
25	2	"Identity"	Nick Copus	Ben Sokolowski & Beth Schwartz	October 16, 2013 (2013-10-16)	2J7452	3.06
Roy fails to stop a truck robbery committed by China White. When Oliver attempts to convince Roy to stop being a vigilante, he learns that the hospital in the Glades is having its medicine stolen. Oliver sets a trap and finds China White stealing the medicine delivery trucks; the police arrive during the battle and he retreats, allowing China White to get away. Oliver decides to work with Sebastian Blood, an alderman for the Glades, to bring awareness and help for the people in need, but is forced to abandon his appearance at a charity event to instead stop China White. Blood lambasts him in the press for this. The vigilante convinces Roy to stop fighting in his name, but instead be his "eyes and ears" in the Glades. Afterward, Laurel sets a trap for the vigilante, who is seemingly surrounded by the police. In a flashback, Oliver, Slade, and Shado discover a cave containing the remains of several cranially disfigured World War II Japanese soldiers.
26	3	"Broken Dolls"	Glen Winter	Marc Guggenheim & Keto Shimizu	October 23, 2013 (2013-10-23)	2J7453	2.89
Oliver is saved from the police by the blonde female vigilante, who quickly vanishes into the night. He sets Roy to track her down, which he manages through the vigilante's connection to a girl named Sin. Officer Lance discovers that the serial killer Barton Mathis, whom he arrested years earlier, escaped from prison during the earthquake and is on the killing spree again. Lance looks to the vigilante for help when he is forced to stay away from the investigation. The pair break into a lab running tests on the evidence found at Mathis' crime scene and are able to discover the link between all of his victims. Oliver learns that Mathis abducted Quentin and Laurel and plans to kill them both. Oliver saves them; the female vigilante shows up and kills Mathis after Oliver captures him. During the pre-trial motions for Moira Queen, the district attorney announces he plans to seek the death penalty for Moira's actions resulting in the deaths of the citizens of the Glades. Later, the female vigilante is tracked down by an agent of Ra's al Ghul; she kills him to avoid having to return to his organization. In flashbacks to the island, Oliver and Slade rush to the aid of Shado who is being attacked. Oliver is imprisoned by unknown assailants on the boat Amazo.
27	4	"Crucible"	Eagle Egilsson	Andrew Kreisberg & Wendy Mericle	October 30, 2013 (2013-10-30)	2J7454	2.37
Felicity realizes from Oliver's past encounters with the female vigilante that she has been following Laurel. With this information, Oliver manages to ambush her and discovers that she is Sara, Laurel's sister who was believed to have drowned. Meanwhile, weapons shipments are being intercepted by a gang leader calling himself "The Mayor", who assaults a gun rally hosted by Oliver and Blood. This allows Felicity to identify the Mayor and subsequently track him down. Oliver recruits Sara to assist him in capturing The Mayor. Afterwards, a corrupt police officer brings The Mayor to an unknown location, where Blood injects him with a green substance that ultimately kills him. Meanwhile, Laurel develops a drinking problem and refuses help from her father and Oliver. In response, Oliver asks Sara to reveal herself to her family, knowing it will cost him Laurel's friendship. In flashbacks, Oliver is questioned about the bodies of the Japanese soldiers, but when he refuses to answer questions he is taken to an interrogation room where he first learns that Sara is alive.
28	5	"League of Assassins"	Wendey Stanzler	Jake Coburn & Drew Z. Greenberg	November 6, 2013 (2013-11-06)	2J7455	2.80
Sara and Oliver are attacked at Queen Mansion by a man dressed like Malcolm Merlyn. Sara reveals that the man, Al-Owal, is a member of the League of Assassins and is targeting her for leaving the League. Felicity manages to trace Al-Owal to an abandoned manufacturing plant from the dirt he left behind. Oliver and Sara fight Al-Owal and two other League members to a stalemate. They manage to escape and Al-Owal threatens to kill Sara's family. Oliver manages to protect Laurel, but Quentin refuses to heed Felicity's warning. To protect her father, Sara reveals to him that she is alive and brings him to her hideout in the clock tower. Together with Oliver, they manage to stop the League's second attack, with Sara killing Al-Owal. Afterwards, Sara decides to leave Starling City to keep her family safe, entrusting her secret to Quentin. Elsewhere, Moira, with the encouragement of her children, decides to fight the death penalty charge even after being offered a plea agreement for life in prison. In flashbacks, after being left adrift from the Queen's Gambit wreckage, Sara is rescued and brought aboard the Amazo, where she meets Dr. Anthony Ivo, who asks her to help him with his experiments.
29	6	"Keep Your Enemies Closer"	Guy Bee	Ben Sokolowski & Beth Schwartz	November 13, 2013 (2013-11-13)	2J7456	3.09
After A.R.G.U.S. agent Lyla Michaels goes missing, Oliver charters a trip to Russia to help Diggle find her when they learn that she was following a lead on Deadshot's whereabouts. Isabel Rochev learns that Oliver is going to Russia and tags along, believing that he is trying to meet with the international division of Queen Consolidated behind her back. Once there, Oliver and Diggle learn that Lyla is being held in a gulag. Based on their plan, Diggle is arrested and sent to the gulag to rescue Lyla. Once inside, Diggle finds Deadshot in an isolation freezer. The pair is forced to team up to save Lyla and escape. Afterward, Diggle lets Deadshot go for helping him save Lyla; in return, Deadshot reveals that he was contracted to kill Diggle's brother by H.I.V.E. In flashbacks, Dr. Ivo reveals to Oliver that the Japanese soldiers were transporting a secret serum that would give soldiers superhuman strength and regenerative capabilities. Later, Sara tricks Oliver into revealing that Shado and Slade are still alive. Oliver is nearly executed, but Sara convinces Ivo to spare him.
30	7	"State v. Queen"	Bethany Rooney	Marc Guggenheim & Drew Z. Greenberg	November 20, 2013 (2013-11-20)	2J7457	2.66
It is revealed that the Count escaped from prison during the earthquake in the Glades. Afterwards, the Count begins poisoning Starling City with the Vertigo drug; Diggle and the assistant district attorney are among the infected. When the ADA collapses in court, the Count kidnaps him en route to the hospital and reveals to the city that the cure to their sickness is to take Vertigo. In court, Laurel uses an affair between Moira and Malcolm to cast doubts on Moira's defense. Ultimately, Moira is found not guilty by the jury; she later learns that Malcolm Merlyn, alive and well, had rigged the trial. Merlyn also reveals that he now knows Thea is his biological daughter. Felicity is able to locate the Count and Oliver manages to save the ADA, but at the expense of allowing the Count to escape. Later, Felicity is captured by the Count when she discovers how he has been infecting the city. In order to protect Felicity from being injected with Vertigo, Oliver is forced to break his promise and kill the Count. Meanwhile, Blood is informed by one of his aides that his test subject, Cyrus, has survived his injection. In a flashback to the island, Shado and Slade rescue Oliver and Sara, after Dr. Ivo and his men travelled to the island to locate the stone arrowhead left by the Japanese soldiers.
31	8	"The Scientist"	Michael Schultz	Story by : Greg Berlanti & Andrew Kreisberg Teleplay by : Andrew Kreisberg & Geoff Johns	December 4, 2013 (2013-12-04)	2J7458	3.24
When a masked thief with superhuman strength steals a centrifuge from Queen Consolidated, Oliver and his team investigate, with the help of Central City CSI Barry Allen. Oliver suspects that Barry is hiding something and has him investigated. When confronted, Barry reveals that he is searching for super-powered beings in the hope that he will find the one responsible for the murder of his mother. Oliver realizes that the thief was enhanced using the same serum that Dr. Ivo was searching for on the island. Roy and Thea stumbled upon Oliver's case after helping Sin to find her missing friend, but Oliver shoots Roy in the leg to prevent him getting further involved. Oliver tracks the thief, but is injured and injected with an unknown toxin. In order to save Oliver's life, Felicity contacts Barry to help find an antidote. Meanwhile, Merlyn puts pressure on Moira to tell Thea that he is her father. Moira instead contacts Ra's al Ghul, who wants to kill Merlyn for breaking the League of Assassins' code of honor by destroying the Glades. As a result, Merlyn leaves and warns her that the issue regarding Thea is not over. In a flashback to the island, Oliver and Shado find the serum, but when they inject Slade with it his heart stops, just as Dr. Ivo arrives with his men.
32	9	"Three Ghosts"	John Behring	Story by : Greg Berlanti & Andrew Kreisberg Teleplay by : Geoff Johns & Ben Sokolowski	December 11, 2013 (2013-12-11)	2J7459	3.02
Barry manages to save Oliver's life, but Oliver is angry to find out that Felicity has revealed his secret when he regains consciousness. Barry and Felicity are able to identify and locate Oliver's attacker, Cyrus Gold. While continuing to discover the truth behind the death of Sin's friend Max, Roy is captured by Cyrus and brought before Sebastian who injects him with the Mirakuru serum. The serum fails to work and kills Roy. Oliver arrives and stops Cyrus, simultaneously destroying the centrifuge and the remaining serum. Oliver revives Roy, but worries that the serum may affect him negatively. In flashbacks, Ivo kills Shado, but flees when Slade turns up with super-human strength and kills his men. Later, Slade is revealed to be alive in the present and the one orchestrating Blood's work; he orders Blood to leave the vigilante alone, so that he can deal with him personally. While Roy recovers at the Queen mansion, the serum injection heals the arrow wound in his leg. Barry leaves a domino mask for Oliver, to better hide his identity, and returns to Central City. While in his lab, Barry is hit by strange lightning created by an accident at the new particle accelerator.
33	10	"Blast Radius"	Rob Hardy	Jake Coburn & Keto Shimizu	January 15, 2014 (2014-01-15)	2J7460	2.52
Oliver continues his search for the man in the skull mask to no avail. Meanwhile, Felicity has been traveling to Central City to visit Barry who is in a coma due to being hit by the lightning. Serial bomber Mark Scheffer, who goes by the name "Shrapnel", begins setting off bombs across Starling City as an anti-government movement. Sebastian Blood begins his campaign for mayor and decides to organize a Unity Rally for the city. Scheffer targets the rally, but Oliver is able to apprehend Scheffer and the bombs are disarmed. During the commotion, Thea witnesses Roy using his new strength and confronts him. Laurel continues to look into Blood, after discovering that he has ties to Cyrus Gold. She visits a mental institution, where she finds Blood's mother, who reveals that Sebastian killed his father and put her in the institution to cover it up. In a flashback, Slade experiences adverse effects to his mind and personality due to the Mirakuru.
34	11	"Blind Spot"	Glen Winter	Wendy Mericle & Beth Schwartz	January 22, 2014 (2014-01-22)	2J7461	2.49
Sebastian Blood visits his mother in the sanatorium and learns that she told Laurel that he killed his father. Oliver continues his search for the man in the skull mask and receives help from Laurel, who suspects that it is Sebastian Blood. Oliver investigates Sebastian, who, fearing that he will be discovered, has Laurel arrested for drug possession by his disciple, Officer Daily. Afterwards, he has her kidnapped to lure Arrow out. Arrow comes to rescue her, but during a fight Laurel kills the man in the skull mask, who is revealed to be Officer Daily, unknowingly throwing suspicion off Blood. Laurel is cleared of wrongdoing, but is fired when her opiate addiction is brought to light. Meanwhile, Roy and Sin attempt to use his new powers to stop a murderer, but Roy goes overboard and puts the man in the hospital. In order to help, Arrow offers to train Roy to control his new powers as well as his change in mental state. In flashbacks, Sara considers an offer from Ivo to return the Mirakuru for safe passage off the island; after remembering Ivo's torture of the ship prisoners, she declines.
35	12	"Tremors"	Guy Bee	Marc Guggenheim & Drew Z. Greenberg	January 29, 2014 (2014-01-29)	2J7462	2.95
Ben Turner escapes from prison with assistance from Milo Armitage, who also pays him $10 million to steal a prototype of Malcolm Merlyn's earthquake device. Arrow tries to teach Roy self-control, but Roy loses control during a mission and Turner manages to escape with the device. Arrow tracks down the device and is forced to reveal his identity to Roy in order to get his help in destroying the device. Meanwhile, Laurel learns that she may be disbarred because of her addiction and spirals further out of control. In addition, Moira agrees to run for mayor against Sebastian and Amanda Waller propositions Turner to commute his sentence in exchange for him joining a "squad" she is forming. In flashbacks, Oliver struggles with the guilt of letting Shado die and stops Slade from destroying Ivo's freighter with Fyers' missile launcher.
36	13	"Heir to the Demon"	Wendey Stanzler	Jake Coburn	February 5, 2014 (2014-02-05)	2J7463	2.86
Nyssa Raatko, daughter of Ra's al Ghul and member of the League of Assassins, arrives in Starling City to convince Sara to return to Nanda Parbat with her. Nyssa confronts Sara, and reveals that the two shared a past romantic relationship. Sara refuses, so Nyssa kidnaps Dinah Lance, Sara's mother, and threatens to kill her if Sara does not agree to return with her within 24 hours. Sara agrees, but drinks snake venom in an act of self-sacrifice. Arrow arrives with an antidote and Nyssa releases Sara from her obligations to the League. Meanwhile, as Moira begins her political campaign, Felicity discovers that Thea's true father is Malcolm Merlyn. Although threatened by Moira, Felicity reveals the truth to Oliver, who supports his mother's campaign publicly while privately renouncing their familial relationship. Although Sara is welcomed back by her parents, Laurel, in a fit of rage, kicks her out of her house after deciding that Sara is responsible for everything bad that has happened to her and their family. In addition, Slade decides to take care of Moira's campaign against Blood.
37	14	"Time of Death"	Nick Copus	Wendy Mericle & Beth Schwartz	February 26, 2014 (2014-02-26)	2J7464	2.45
William Tockman orchestrates a precisely timed heist of Kord Industries and steals an electronic device that will allow him to access any bank vault in the world. His work comes to the attention of Oliver and Sara, who work together to try and stop him, foiling one of his robberies. In response, Tockman uses the device to hack into the computer servers at Oliver's hideout and overload them so they explode. Felicity, feeling left out with Sara now part of the team, attempts to bait Tockman into coming after one last heist. Oliver, Sara and Diggle arrive in time to protect Felicity, but Felicity takes a bullet while saving Sara before stopping Tockman. Meanwhile, the Lances attempt to have dinner together and it is revealed that Sara and Oliver are in a relationship, much to Laurel's anger. Later, Laurel reveals the reason for her anger to Sara and they make amends; afterwards, Laurel attends an A.A. meeting with Quentin. Slade makes his presence known to Oliver by coming to his home and meeting with Moira. In flashbacks, it is revealed that Sara befriended Sin after promising Sin's dying father, a pilot shot down while flying over the island, that she would make sure Sin was safe.
38	15	"The Promise"	Glen Winter	Jake Coburn & Ben Sokolowski	March 5, 2014 (2014-03-05)	2J7465	2.21
Discovering that Slade is alive, Oliver is forced by his mother to give Slade a tour of the home. Sara and the rest of the team are notified and arrive at the home to provide backup to Oliver. As Slade leaves, Oliver deduces that he is the one controlling the man in the skull mask, and attempting to create more Mirakuru. Slade informs Oliver that he is there to follow through with a promise he made to Oliver on the island. Later, it is revealed that Slade used the tour to plant cameras throughout the Queen home. In flashbacks, Oliver, Sara, and Slade strategize how to infiltrate Ivo's freighter. The trio set fire to the Mirakuru, and privately Sara convinces Oliver to kill Ivo in order to keep him from telling Slade how Shado died. Oliver, Slade, and Sara are able to board the ship, with Sara freeing the prisoners, and Oliver and Slade going after Ivo. With Ivo cornered, he reveals to Slade that Oliver chose Sara over Shado. Slade turns on Oliver and imprisons him on the ship as Sara and the other prisoners escape to the island. Slade takes control of the ship and reveals to Oliver that he kept the Mirakuru, having Sara and Oliver destroy an empty box, and tells Oliver that he will not kill him until he has made him suffer the loss of those he loves first, the "promise" he spoke of.
39	16	"Suicide Squad"	Larry Teng	Keto Shimizu & Bryan Q. Miller	March 19, 2014 (2014-03-19)	2J7466	2.42
In a flashback to years prior in Afghanistan, Diggle and Lyla are leading a group of Afghan villagers when one identifies a wanted man, Gholem Qadir, among the group. During an ambush, Diggle saves Qadir's life. In the present, Diggle and Lyla are called upon by Amanda Waller to lead her "Task Force X", also known as the "Suicide Squad", which consists of Deadshot, Bronze Tiger and Shrapnel being used as expendable assets. The Squad is sent after Qadir, who was released from prison and has developed a deadly nerve agent. Waller wants to use Diggle's past relationship with Qadir to get close to him and steal the weapon. After saving Qadir's life again, through a faked assassination attempt, Diggle is invited to Qadir's home for a party. Once there, Deadshot locates the nerve agent and is expected to be used as a targeting reference for a drone strike on the house. Diggle decides to save Deadshot; as a result, the drone misses the house and a SEAL team is forced to destroy the nerve agent. Meanwhile, Oliver continues to try and deal with the threat of Slade. Oliver is forced to go to Amanda Waller for help, revealing he has interacted with her before. At first not believing that Slade is alive, Waller tells him that A.R.G.U.S. has been tracking a new mercenary they call "Deathstroke", whom the pair realize is actually Slade.
40	17	"Birds of Prey"	John Behring	Mark Bemesderfer & A.C. Bradley	March 26, 2014 (2014-03-26)	2J7467	2.62
Oliver and Sara assist a police raid, and in the process help capture Frank Bertinelli. Oliver quickly realizes that Frank's daughter, Helena, will return to kill Frank once she learns that her father is in police custody. Laurel is asked to return to the district attorney's office to try Frank's case, but she discovers that it is a ruse to draw out Helena. She shows up at the courthouse and takes hostages in exchange for her father. Sara goes to the courthouse to rescue Laurel, but Helena overpowers Sara and demands that Oliver deliver Frank in exchange for Laurel. Oliver complies, but Frank is killed in crossfire with S.W.A.T.; Quentin ultimately arrests Helena, after Sara stops her. Despite the ruse, the district attorney rehires Laurel to avoid scandal. Roy breaks up with Thea when he realizes that he is a danger to her so long as he cannot control the Mirakuru side effects. In flashbacks, Slade demands Sara return one of the escapees, who can fix the engines of the ship, or else he will kill Oliver. Sara and the other escapees prepare to send the person back against his will.
41	18	"Deathstroke"	Guy Bee	Marc Guggenheim & Drew Z. Greenberg	April 2, 2014 (2014-04-02)	2J7468	2.32
Initially pretending to comfort Thea after her breakup, Slade uses the opportunity to kidnap her. Distracted by Thea's kidnapping, and having his team work to locate Slade, Oliver gives temporary CEO status to Isabel Rochev so that she can ensure that the company runs smoothly in his absence. Isabel uses her temporary power to convince the board of directors to make her position permanent, thus allowing her company to take full control of Queen Consolidated. When confronted, Isabel reveals that she has been working with Slade the entire time, and tells Oliver where Thea is being held. Oliver arrives, but Thea has already been freed—her kidnapping was a diversion from Slade's real plan to free a group of convicts to be used as test subjects for the next Mirakuru trials. Thea informs Oliver and Moira that Slade told her that her biological father is Malcolm Merlyn. Quentin Lance is arrested for aiding the vigilante, Roy leaves Starling City, and Slade visits Laurel and reveals that Oliver is the Arrow. In flashbacks, Sara attempts to use the trade for Oliver as a moment to kill Slade, but it backfires.
42	19	"The Man Under the Hood"	Jesse Warn	Story by : Greg Berlanti & Geoff Johns Teleplay by : Andrew Kreisberg & Keto Shimizu	April 16, 2014 (2014-04-16)	2J7469	2.26
Oliver and his team destroy the lab at the Applied Sciences division of Queen Consolidated so that Slade cannot use it to mass-produce the Mirakuru. In response, Slade attacks the team at their hideout and steals an electronic Skeleton Key. He uses the key to steal a bio-transfuser from a S.T.A.R. Labs facility that Caitlin Snow and Cisco Ramon work at that will allow him to transfer his Mirakuru-infused blood to the convicts he freed. Oliver tracks Slade and discovers that he has kidnapped Roy and is using him to transfuse the blood. Oliver rescues Roy, and Isabel is mortally wounded in the battle. Later, Oliver reveals there is a cure for the Mirakuru and Felicity goes to S.T.A.R. Labs to have Caitlin and Cisco create an antidote. Meanwhile, Laurel investigates Oliver being the Arrow, which leads her to discover that Sara is the Canary. Laurel stops her investigation when her father tells her that the Arrow's identity is irrelevant to the symbol that he represents. Laurel later blackmails her supervisor into releasing and reinstating her father. Slade's army of Mirakuru warriors gather and Slade uses his blood to heal and empower Isabel as well. In flashbacks, Oliver kills Ivo after he tells him and Sara about the Mirakuru cure.
43	20	"Seeing Red"	Doug Aarniokoski	Wendy Mericle & Beth Schwartz	April 23, 2014 (2014-04-23)	2J7470	2.19
Roy goes on a rampage, overwhelmed by the Mirakuru and no longer thinking for himself, attacking civilians. Oliver and Sara track Roy down, but during a fight, Oliver's leg is significantly injured and Roy escapes, killing a police officer in the process. Sara decides that Roy must be killed, but Oliver still wants to save him. Roy comes to Verdant and Oliver uses the opportunity to inject Roy with pit viper venom to knock him unconscious and keep him sedated until a cure can be found. Sara decides that she is not good enough for Oliver and leaves the city to find a friend. Thea continues to distance herself from her family, so Moira decides to drop out of the mayoral race at a rally, to focus on rebuilding her relationship with Thea. Oliver convinces her to continue to run and Moira reveals that she has known Oliver was the Arrow since last year's earthquake, and that she is proud of the man he has become. After the rally, Moira, Thea, and Oliver are attacked by Slade, who murders Moira when she sacrifices herself to save Thea and Oliver. In a flashback to seven years prior, Oliver reveals that he got a young woman, Samantha Clayton, pregnant, so Moira pays Samantha to tell Oliver she had a miscarriage and leaves Starling City.
44	21	"City of Blood"	Michael Schultz	Holly Harold	April 30, 2014 (2014-04-30)	2J7471	2.31
When Oliver goes missing after Moira's death, Diggle and Felicity enlist the help of Amanda Waller to track him down. They find him in a secret hideout, where he reveals his plan to give himself up to Slade in order to save everyone else. Isabel returns and shuts down Verdant, forcing Thea to make a decision to leave Starling City for good. Sebastian is sworn in as Mayor, but Laurel uncovers documentation that he knew Slade was going to kill Moira. Laurel reveals to Oliver that she knows he is the Arrow and that Sebastian is working with Slade. After confronting Sebastian, Oliver decides that they have no choice but to kill Slade's Mirakuru army. The plan backfires, with Oliver and Laurel cornered by Slade's army, various Mirakuru soldiers wreaking havoc on the city, and Diggle being confronted by Isabel clad in Deathstroke armor. In flashbacks, Anatoli repairs the Japanese submarine that brought the Mirakuru and he and Oliver prepare to attack the Amazo.
45	22	"Streets of Fire"	Nick Copus	Jake Coburn & Ben Sokolowski	May 7, 2014 (2014-05-07)	2J7472	2.33
As Slade's men continue to terrorize the city, Felicity joins Diggle and hits Isabel with a van so he can escape, and Malcolm Merlyn returns to the city to save Thea. S.T.A.R. Labs successfully makes a cure for the Mirakuru, but Slade sends men to acquire it before Oliver. Finally trusting Lance, the police force pledges to help the Arrow stop Slade's men and Quentin is re-promoted to detective to lead the other officers. Slade reveals to Blood that he plans to destroy the entire city, people and all, in his quest for vengeance against Oliver. As a result, Blood steals the cure and gives it to Oliver in return for help saving the city. For his betrayal, Slade has Isabel kill Blood. Oliver tests the cure on Roy after Amanda Waller reveals that she intends to bomb the city at dawn to prevent Slade's men from attacking the rest of the country. In flashbacks, Oliver boards the Amazo to rescue Sara, after she was captured by Slade, with specific orders for Anatoli to destroy the ship if they do not return within an hour. However, they are both captured by Slade.
46	23	"Unthinkable"	John Behring	Story by : Greg Berlanti Teleplay by : Marc Guggenheim & Andrew Kreisberg	May 14, 2014 (2014-05-14)	2J7473	2.37
The cure works and Oliver and his team must escape their hideout when Slade's men arrive. Back at Verdant, Sara arrives with Nyssa and the League of Assassins to provide backup to take out Slade's men. Equipped with the cure, the team confront Slade and Isabel at Queen Consolidated. Nyssa kills Isabel and Slade escapes. Meanwhile, Diggle and Lyla try to force Waller to stop the nuclear strike on the city. Laurel is abducted from SCPD and Quentin is seriously injured. Thea meets up with Roy, but when she finds a bow and arrow, she loses trust in him and leaves Starling City with Merlyn. Oliver and his team successfully use the cure on all of Slade's men. Oliver tricks Slade into kidnapping Felicity, believing she's the one whom Oliver loves. With Slade distracted, Felicity injects him with the cure. Oliver is able to defeat him and Waller calls off the bombing. Slade is locked in an underground A.R.G.U.S. prison on the island and Sara rejoins the League as payment for helping the city. In flashbacks, Anatoli fires a torpedo into the Amazo, causing it to sink. During the destruction, Oliver presumably kills Slade and Sara disappears overboard. Later, Oliver awakens in Hong Kong, where he meets Amanda Waller.

Season 3 (2014–15)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
47	1	"The Calm"	Glen Winter	Story by : Greg Berlanti & Andrew Kreisberg Teleplay by : Marc Guggenheim & Jake Coburn	October 8, 2014 (2014-10-08)	3J5151	2.83
Following Slade's defeat, the Arrow is embraced as a hero by the people of Starling City, and newly-promoted Captain Lance calls off the anti-vigilante task-force. Elsewhere, Werner Zytle, who has claimed the mantle of Vertigo, attempts to kill Arrow in a bid to raise his profile. After losing the first battle, Oliver and Roy are able to stop Zytle, along with some help from Sara who is back in town. Meanwhile, businessman Ray Palmer successfully acquires Queen Consolidated under a plan of rebuilding the city and renaming it "Star City". Diggle and Lyla welcome a baby girl, which convinces Diggle to take Oliver's suggestion and retire from field duty. Oliver and Felicity go on a first date, but Oliver ends it explaining how he cannot be both the Arrow and Oliver, although he acknowledges loving her. After visiting Laurel, Sara is shot in the chest with arrows by an unseen figure and falls from a rooftop to her death in front of Laurel. In flashbacks, Amanda Waller tries to force Oliver to work for her, and assigns agent Maseo Yamashiro as his handler. After numerous failed attempts to escape, Oliver agrees to proceed with his training to prevent Waller from killing Maseo's family as punishment for his failure in restraining Oliver.
48	2	"Sara"	Wendey Stanzler	Jake Coburn & Keto Shimizu	October 15, 2014 (2014-10-15)	3J5152	2.32
Not knowing what else to do, Laurel takes Sara's body to the team. Laurel demands to help Oliver find Sara's killer, but he forces her to go home. Captain Lance alerts Oliver to another archer in the city killing people, unaware that Sara was killed by an archer. Oliver follows a lead, and with Felicity and Diggle's help, he is able to identify the archer as Simon Lacroix. The team learn who Lacroix's next target is, and are able to stop him before he can succeed. Laurel arrives with a gun, determined to avenge Sara's death by killing Lacroix. As Oliver attempts to talk her out of it, Lacroix reveals that he was not in Starling City the night of Sara's death and leaves Oliver and his team with no more leads as to who killed Sara. The team bury Sara, but Laurel is unable to tell Quentin that Sara is dead. Roy also reveals to Oliver that Thea left town when she learned he was working with the Arrow. In Corto Maltese, Thea is with Malcolm Merlyn and has proven capable of defeating more than one henchman in combat. In flashbacks, Oliver is tasked with killing Tommy Merlyn, after the latter comes to Hong Kong to find Oliver after seeing activity on Oliver's email account. To save Tommy, Oliver pretends to kidnap him and tricks him into thinking that it was a ruse to gain ransom money.
49	3	"Corto Maltese"	Stephen Surjik	Erik Oleson & Beth Schwartz	October 22, 2014 (2014-10-22)	3J5153	2.55
With no more leads in Sara's murder, Oliver focuses his attention on bringing Thea home. Felicity is able to track her to the island of Corto Maltese. Oliver finds Thea working at a restaurant, but she refuses to return to Starling City. While he waits to convince Thea to return, Oliver assists Diggle on a mission for A.R.G.U.S. to ascertain the whereabouts of one of its agents, Mark Shaw. The agent informs Diggle that someone broke into the A.R.G.U.S. database and stole information to sell on the black market. Later, Shaw double crosses Diggle, and reveals that he was the one selling A.R.G.U.S. secrets. Felicity helps Oliver and Diggle track down Shaw, and they stop him from selling any secrets. After a last minute plea, and Oliver revealing the truth about how their father died, Thea agrees to return to Starling City. Meanwhile, trying to emulate her sister, Laurel attempts to exact vengeance on an abusive boyfriend of a fellow A.A. member, but she is no match and ends up in the hospital. Later, she seeks out boxer Ted Grant to train her to fight after Oliver's refusal. In flashbacks to six months prior, Merlyn begins training Thea to calm her mind and heal her emotional pain, while also mastering control over physical pain.
50	4	"The Magician"	John Behring	Marc Guggenheim & Wendy Mericle	October 29, 2014 (2014-10-29)	3J5154	2.49
Nyssa al Ghul returns to Starling City looking for Sara. Oliver informs her that Sara was killed; Oliver sends Roy to follow Nyssa after it is clear that she knows more about who could have killed Sara. Nyssa is tracked to Sara's old safe house, where Nyssa reveals to Oliver that Malcolm Merlyn is alive and Sara was sent by the League to confirm his existence. After tracking Merlyn, Oliver agrees to meet him in a public location to discuss Sara's death. Merlyn tells Oliver that he did not kill Sara, but only returned to Starling City to take care of Thea. Nyssa kidnaps Thea in an attempt to draw Merlyn out, but Oliver arrives to rescue Thea. Merlyn arrives shortly after to clear his name and insinuates to Nyssa that it was her father, Ra's al Ghul, that had Sara killed. Nyssa does not believe him, but Oliver does and vows to protect Merlyn for as long as he is in Starling. Nyssa warns Oliver that he has made a serious enemy in the League before leaving and reporting back to her father. In flashbacks, Oliver completes his first assassination, and learns that Amanda Waller was behind Edward Fyers' actions on the island.
51	5	"The Secret Origin of Felicity Smoak"	Michael Schultz	Ben Sokolowski & Brian Ford Sullivan	November 5, 2014 (2014-11-05)	3J5155	2.73
A cyber terrorist attacks Starling City, threatening to shut down all banks and set everyone on an even socioeconomic status. While Oliver and Roy attempt to keep the peace on the streets, Felicity works to locate the virus that is attacking the city's infrastructure. Felicity quickly realizes that she designed the virus five years earlier, and that it is unstoppable. Felicity's mother Donna shows up unannounced, and the two have a falling out over how different they are from each other. Felicity soon realizes that her mother was unknowingly sent by the cyber terrorist—revealed to be Felicity's ex-boyfriend Cooper—who kidnaps them both. Using Donna as leverage, the terrorist forces Felicity to divert a set of armored vehicles, carrying newly minted money, to their location. Felicity uses the system to also contact Oliver, who arrives with Roy and Diggle to stop the terrorist and his team. Laurel continues to train with Ted Grant, and reveals to him the real reason that she is learning to fight. Meanwhile, Roy begins having nightmares that he was the one who killed Sara.
52	6	"Guilty"	Peter Leto	Erik Oleson & Keto Shimizu	November 12, 2014 (2014-11-12)	3J5156	2.60
A murderer begins taking out gang members in Starling City, and when a body shows up in Ted Grant's gym he becomes a suspect. Oliver follows Ted to another body, where Ted denies killing anyone and reveals to Oliver that he was once a vigilante who retired after a drug dealer was beaten to death by accident. The pair follow the clues to the location where the drug dealer was killed. The murderer shows, which Ted reveals was his former protégé Isaac Stanzler, and who was responsible for the death of the drug dealer, but is bested by Oliver before escaping. Isaac kidnaps Ted and Laurel, but Oliver and his team are able to successfully stop him. Meanwhile, Roy tells Felicity about his dreams and has her run tests on any Mirakuru that may be in his system still. The test reveals no Mirakuru, but Felicity shows Roy other evidence that corroborates his fears. Roy confesses to Oliver and Laurel that he killed Sara. Using a technique learned in Hong Kong, Oliver helps Roy access his memories to realize that he did not kill Sara; however, Roy discovers he did kill a cop while under the effects of Mirakuru.
53	7	"Draw Back Your Bow"	Rob Hardy	Wendy Mericle & Beth Schwartz	November 19, 2014 (2014-11-19)	3J5157	2.64
Oliver begins investigating a new killer in town, who murdered Isaac Stanzler using a bow and arrow, and left his body dressed up as "The Arrow". Following a lead, Oliver learns that the copycat vigilante is a former cop, named Carrie Cutter, who goes by the name "Cupid" and is obsessed with Arrow. Carrie uses a former C.I. to track down Oliver's hideout. Oliver lures Carrie away; when Oliver rejects her romantic advancement Carrie tries to kill the both of them. Oliver stops her, which reinforces Carrie's delusion that he is in love with her. Subsequently, Oliver gives her to A.R.G.U.S. as a new member of their Suicide Squad in the hopes that being on a team will help provide her guidance. Meanwhile, Ray reveals his next plan to help save the city is rebranding Queen Consolidated into Palmer Technologies. Oliver struggles with how much time Felicity is spending with Ray, and the situation is made worse when he walks in on them kissing. Ray is later shown working on a personal exosuit design. In flashbacks to Hong Kong, Oliver and Maseo's wife go off to find her husband when he goes missing.
54	8	"The Brave and the Bold"	Jesse Warn	Story by : Greg Berlanti & Andrew Kreisberg Teleplay by : Marc Guggenheim & Grainne Godfree	December 3, 2014 (2014-12-03)	3J5158	3.92
Oliver and Roy track down the home of Digger Harkness, a boomerang-wielding murderer, but they only find A.R.G.U.S. operatives looking for the same man. S.T.A.R. Labs' Dr. Caitlin Snow and Cisco Ramon arrive in Starling City to help Felicity analyze DNA from the arrow that killed Sara. Digger attempts to kill Lyla; Roy and Oliver arrive to stop him, but need assistance from Barry Allen, who uses his super speed to stop a couple of boomerangs from killing Oliver. Later, Lyla reveals Digger was part of the Suicide Squad, and Oliver agrees to allow Barry to assist in the investigation. Oliver's interrogation tactics lead Barry to question how emotionally stable Oliver is. The team track Digger's location, but it turns out to be a ruse that allows Digger to trace their hideout, where he wounds Lyla before being forced to run away. In order to escape, Digger plants 5 bombs around the city. While Oliver captures Digger, Barry uses both his and Oliver's teams to defuse the bombs at the same time. Flashbacks to Hong Kong show Oliver learning how to torture suspects effectively to get information. This episode concludes a crossover with The Flash that begins on "Flash vs. Arrow".
55	9	"The Climb"	Thor Freudenthal	Jake Coburn & Keto Shimizu	December 10, 2014 (2014-12-10)	3J5159	3.06
The League of Assassins inform Oliver that he has 48 hours to find and turn over Sara's killer or the league will begin murdering Starling City citizens. Oliver also learns Maseo is now a member of the League. Dr. Snow sends Felicity the DNA profile from the arrow that killed Sara, and the police database identifies Oliver. Believing Malcolm Merlyn set him up, Oliver discovers that Merlyn and Thea arrived in Starling City the night before Sara's murder. Realizing that she has been lying, Arrow confronts Thea, who demonstrates her training with Merlyn, before escaping from the Arrow. Later, Merlyn informs Oliver that he drugged Thea and manipulated her into killing Sara. Merlyn filmed the event to use as leverage to force Oliver into a fight to the death with Ra's al Ghul, with Ra's potential death releasing Merlyn from any blood debt to the League. Oliver and Ra's meet, with Oliver outmatched. Ra's mortally wounds Oliver and kicks him over the side of a cliff. In flashbacks, Oliver and Maseo learn that China White has stolen an engineered super-virus. China breaks into Maseo's house and kidnaps Tatsu.
56	10	"Left Behind"	Glen Winter	Marc Guggenheim & Erik Oleson	January 21, 2015 (2015-01-21)	3J5160	3.06
With no knowledge of what happened to Oliver, Diggle and Roy work to continue protecting the city in his absence. With the Arrow missing, a new crime lord named Danny "Brick" Brickwell plots to take over the Glades. After Thea expresses worry over Oliver's absence, Merlyn investigates the site of the duel and brings a bloodied sword back to Diggle and the others, proclaiming Oliver's death. Diggle discovers Brickwell's plan, to destroy all the evidence against street enforcers so they are released from jail and have to join his crew, and heads to the police warehouse with Roy to stop him. Diggle and Roy are outnumbered, and fearing for their lives, Felicity decides to trap them in the warehouse and let Brickwell escape. Afterward, Felicity proclaims the group non-existent without Oliver and quits. With dozens of men freed because of Brickwell, Laurel goes after them, donning an altered Canary costume. Meanwhile, Maseo finds Oliver's body and takes it to Tatsu so that she can "bring him back to life." In flashbacks to Hong Kong, Oliver and Maseo steal the counterpart to China White's super-virus, thus making her portion inert. Oliver also slips a GPS tracker on one of China's men so that they can locate Tatsu.
57	11	"Midnight City"	Nick Copus	Wendy Mericle & Ben Sokolowski	January 28, 2015 (2015-01-28)	3J5161	2.91
Tatsu informs Oliver that his will to live and the cold temperature of the mountain are the only reason he survived. Oliver warns Maseo that Ra's will see his act as a betrayal and kill him for it. While Oliver attempts to rest and heal, members of the League arrive which forces Maseo and Tatsu to kill them to protect Oliver. Maseo cuts himself so Ra's will believe Oliver escaped. Roy and Diggle warn Laurel to stay off the streets, after Roy has to bail her out of a fight. Brick kidnaps the city's aldermen, but when Laurel and Roy track them down, Brick escapes and kills one of the aldermen in retaliation. In exchange for the remaining aldermen, Brick demands that all police presence evacuate the Glades for good. The team is able to locate the aldermen and successfully rescue them, but the Mayor still agrees to remove the police after Brick reveals that he has targeted every legislative body member. Meanwhile, Felicity rejoins the team and provides Ray with the missing piece for his A.T.O.M. exo-suit. Chase, the DJ for Verdant, is revealed to be a spy for the League, who informs Maseo that Merlyn has chosen not to leave Starling. In flashbacks, Maseo makes a deal with China White to give her the counterpart to her virus in exchange for Tatsu.
58	12	"Uprising"	Jesse Warn	Beth Schwartz & Brian Ford Sullivan	February 4, 2015 (2015-02-04)	3J5162	2.94
Worrying about Starling, Oliver decides to leave Tatsu and head home, against her wishes to rest and heal. Tatsu informs him that if he wants to defeat Ra's al Ghul, he will need to seek swordsman training from Maseo. With the police out of the Glades, Roy and Laurel are tasked with fighting Brick's men to keep the peace. Captain Lance gives the team all the information the police have on Brick to help locate him. Merlyn spies on the team as they review the evidence against Brick, and discovers that Brick was responsible for the death of Merlyn's wife. Merlyn propositions the team to join forces to take down Brick, but the team refuses. Instead, they rally the citizens of the Glades to take back their neighborhood by force. Merlyn corners Brick and gets the upper hand. Just as Merlyn is preparing to kill Brick, Oliver arrives and persuades him to spare Brick's life for Thea's sake and let the police arrest him. Oliver, as the Arrow, addresses the citizens of the Glades, commending them for not failing the city and announces that he will not leave them again. In the aftermath, Oliver requests Merlyn train him so that he can take on Ra's al Ghul. Flashbacks chronicle the death of Merlyn's wife and his journey to the League of Assassins to seek training.
59	13	"Canaries"	Michael Schultz	Jake Coburn & Emilio Ortega Aldrich	February 11, 2015 (2015-02-11)	3J5163	2.67
While being transported from prison, Werner Zytle orchestrates an escape by poisoning a guard with Vertigo. As Oliver tries to keep Laurel off the streets as a vigilante, Merlyn arrives at the hideout to inform Oliver that to beat Ra's al Ghul he will need to bring Thea into the team. Oliver decides to reveal the truth to Thea who accepts and praises him for the work he has been doing as the Arrow. Laurel tracks down Zytle and takes him on herself, only to be poisoned with Vertigo. Laurel begins to hallucinate images of Sara, who confirms all of Laurel's self doubts. Oliver and Roy arrive in time to save her and get her back to the base for treatment. Later, Oliver brings Laurel along to take down Zytle. Laurel is dosed with Vertigo again, but overcomes her fears to stop Zytle. Meanwhile, DJ Chase attempts to kill Thea, but Roy and Merlyn show up; Chase commits suicide when it is clear he has lost. Based on Merlyn's advice, Oliver takes Thea to Lian Yu for training. Laurel meets with her father and finally tells him the truth about Sara. In flashbacks, Oliver attempts to contact his family but is captured by A.R.G.U.S. and interrogated for the location of Maseo and Tatsu. Amanda Waller brings Oliver and Maseo to Starling City to find China White.
60	14	"The Return"	Dermott Downs	Marc Guggenheim & Erik Oleson	February 18, 2015 (2015-02-18)	3J5164	2.91
While on the island of Lian Yu, Oliver begins Thea's training. After a night dreaming of Sara, Oliver goes to the A.R.G.U.S. prison to visit with Slade Wilson, where he discovers the guard dead and Slade missing. Oliver warns Thea and retrieves a gun from the site of his father's grave, but Slade arrives and captures them. Slade imprisons them in the A.R.G.U.S. cell, leaving them to the same fate Oliver left him. The duo are able to open the doors and escape. Oliver reveals to Thea that she killed Sara, while she grapples with the truth, Slade arrives. The three fight and Thea wounds Slade with his gun, allowing them to imprison him back in the cell. In flashbacks, Oliver and Maseo go to Starling City to track an employee of Queen Consolidated who is working with China White to sell the part of the virus she controls. They track the location of the buy and disrupt the proceedings. Oliver looks in on his family and discovers that Thea is using drugs, and a video message from his father explaining the list of names and encouraging Oliver to save the city.
61	15	"Nanda Parbat"	Gregory Smith	Story by : Wendy Mericle & Ben Sokolowski Teleplay by : Erik Oleson & Ben Sokolowski	February 25, 2015 (2015-02-25)	3J5165	3.07
Oliver and Thea continue their training with Merlyn. Thea struggles with the secret of Sara's death, and confesses the whole truth to Laurel who tells her she is not responsible; Thea also makes a deal to turn her father over to the League. Laurel confronts Merlyn and is easily outmatched, but they are interrupted by Nyssa and the League, and Merlyn is captured. Oliver decides to go to Nanda Parbat to rescue Merlyn to prevent Thea from losing touch with her humanity when she realizes that she has sentenced her father to death. Oliver and Diggle infiltrate Nanda Parbat, but walk into a trap set by Ra's. Instead of killing Oliver, Ra's expresses his appreciation for Oliver's courage and strength, and asks Oliver to replace him as the head of the League. Meanwhile, Thea confesses the truth to Nyssa and offers her the chance at revenge, and Ray tests the flight capabilities of his completed A.T.O.M. exo-suit. In flashbacks, Oliver is debriefed by General Matthew Shrieve. Afterward, he is promised that he can return home if he pleases. On their way home, Oliver and the Yamashiros are ambushed. Overrun, Oliver flees for safety with the Yamashiros' son.
62	16	"The Offer"	Dermott Downs	Beth Schwartz & Brian Ford Sullivan	March 18, 2015 (2015-03-18)	3J5166	2.56
Ra's al Ghul tries to convince Oliver to take over as the head of the League, and explains that the localized pool of water in Nanda Parbat has healing effects that have allowed him to live far longer than any mortal man. The pool is becoming less effective on him, so Ra's is looking for a replacement. In a show of good faith to convince Oliver to take the offer, Ra's releases Diggle and Merlyn and forgives all blood debts. Oliver returns to Starling and releases Nyssa, much to the confusion to the rest of the team. Oliver and his team return to stopping crimes, but Captain Lance is done helping the Arrow when he realizes the vigilante lied about Sara's death. Afterward, Oliver realizes that he is not ready to give up being the Arrow; Oliver informs Maseo of his decision, who warns Oliver of the consequences to defying Ra's. Upset with her father for his offer to Oliver, Nyssa returns to Starling City and agrees to help train Laurel. Ra's, dressed as the Arrow, frames the vigilante for murder. In flashbacks to Hong Kong, Oliver and the Yamashiro's son continue to be on the run, during which they seemingly stumble across Shado, who is alive.
63	17	"Suicidal Tendencies"	Jesse Warn	Keto Shimizu	March 25, 2015 (2015-03-25)	3J5167	2.86
Diggle and Lyla officially remarry, but Amanda Waller interrupts their honeymoon to recruit them for a Suicide Squad mission to rescue Senator Cray from a kidnapping. The kidnapping turns out be a ruse by Cray, to help his bid for President. The team rescues the hostages, but Floyd Lawton/Deadshot seemingly sacrifices himself so everyone can get out safely. The police issue a warrant for the Arrow, and Ray publicly announces his own support for the apprehension of the Arrow. Oliver discovers that Ra's has sent multiple assassins to impersonate him until he agrees to take over as the head of the League. In his new A.T.O.M. suit, Ray locates the Arrow and through facial scans learns Oliver is the Arrow. After Laurel refuses to accept Ray's evidence against Oliver he decides to take matters into his own hands. Luring the Arrow to a factory, Ray engages Oliver in a fight, but the latter disables Ray's suit. After, Oliver helps Ray to convince him that he is being framed. Later, Maseo, dressed as the Arrow, murders the mayor in front of multiple witnesses. In flashbacks, Floyd Lawton struggles to transition back into society from the military, including his wife and child leaving him. Floyd is propositioned by an organization known as H.I.V.E. to assassinate Andrew Diggle, John's brother.
64	18	"Public Enemy"	Dwight Little	Marc Guggenheim & Wendy Mericle	April 1, 2015 (2015-04-01)	3J5168	2.48
After the mayor's murder, Captain Lance issues an arrest warrant for the Arrow and his team, with shoot to kill orders in effect. Ray, having also been shot in the chest and operated on, has a life-threatening blood clot that only his own nanobot invention can dissolve; Felicity administers the cure. Realizing Maseo is the assassin, Oliver uses Nyssa to track his location. Ra's appears and again warns Oliver that not accepting the offer will continue to bring death. The police arrive and Oliver and his team barely escape. To push Oliver to accept the offer, Ra's kidnaps Captain Lance and reveals Oliver's true identity as the Arrow. Captain Lance announces this revelation at a press conference. With his back to a wall, Oliver decides to turn himself in to the police. In order to save Oliver, Roy dresses as the Arrow, stops Oliver's transport van and gives himself up to the police, insisting that he has been the Arrow all along. In flashbacks, Oliver thinks he has found Shado, but it turns out to be her twin sister Mei. A.R.G.U.S. agents come after them, but Maseo and Tatsu arrive to rescue them. Afterward, Oliver tells Mei that her sister and father are dead.
65	19	"Broken Arrow"	Doug Aarniokoski	Story by : Jake Coburn Teleplay by : Ben Sokolowski & Brian Ford Sullivan	April 15, 2015 (2015-04-15)	3J5169	2.47
With Roy arrested for being the Arrow, the District Attorney decides not to charge Oliver with any crime. In prison, Roy fends off attacks from the other inmates. While Oliver and his team plot to break Roy out of prison, as well as determine how to stop metahuman Jake Simmons, Captain Lance obtains a search warrant for Verdant and uncovers Oliver's hideout, though he only finds Roy's fingerprints. Oliver enlists Ray's help in stopping the metahuman. After a failed first attempt, Oliver and Ray sync their movements through a neural network, but when the network malfunctions during the battle, Ray defeats Simmons himself, and places him under S.T.A.R. Labs' custody. With the help of a former A.R.G.U.S. agent, Roy fakes his own murder so that the public believes the Arrow is dead and Oliver Queen innocent. As a result, Roy is forced to leave the city. Ra's visits Thea and after a brief fight he mortally wounds her with his sword. In flashbacks, Oliver infiltrates A.R.G.U.S. to stop Waller, only to discover that she did not send the men after him and the Yamashiros: it was actually done by General Shrieve, who plans to release the virus in Hong Kong. Oliver, Maseo, and Tatsu steal the vaccine, as well as the plans for how Shrieve plans to infect the city.
66	20	"The Fallen"	Antonio Negret	Wendy Mericle & Oscar Balderrama	April 22, 2015 (2015-04-22)	3J5170	2.72
Oliver finds Thea bleeding to death and rushes her to the hospital, where she is stabilized enough for Oliver to make arrangements for her impending death. Maseo contacts Oliver to let him know that if he accepts Ra's offer, he will be able to use the Lazarus Pit to heal Thea. Malcolm warns against this, stating that the pit changes a person in their soul, but Oliver decides to take her to Nanda Parbat regardless. Thea is dipped into the pit and returns healed but in a state of confusion, and her memories jumbled. Knowing Oliver will not leave willingly, Felicity drugs him so they can sneak him out of the fortress. Cornered by Ra's men, Oliver wakes in time to order the League members to stand down. Afterward, Oliver returns to take his place as head of the League, alone. Thea wakes up in her apartment, her mind clear and distraught that Oliver sacrificed himself for her. Oliver renounces his old life, taking on an apprentice role in the League and the name Al Sah-him until he is ready to take over as the new "Ra's al Ghul". In flashbacks, Oliver, Maseo, and Tatsu go after the virus, but during a fight it is released.
67	21	"Al Sah-him"	Thor Freudenthal	Story by : Beth Schwartz Teleplay by : Brian Ford Sullivan & Emilio Ortega Aldrich	April 29, 2015 (2015-04-29)	3J5171	2.39
Oliver begins his training, which includes breaking down his psyche so that his allegiance is only to the League and his new identity as Al Sah-him. Ra's recounts the moment that he was chosen to become the leader of the League, and a duel with his best friend Damien Darhk who saw himself as the heir. Ra's hesitated and Damien fled, stealing from the Lazarus Pit and starting his own group. Subsequently, Oliver is directed to kill a League member who sees themselves as the real heir: Nyssa. Oliver and the League come to Starling City, where Nyssa confronts them. Oliver bests her, but is forced to flee when they are interrupted by Diggle and Laurel. Oliver kidnaps Lyla to force the team to give up Nyssa. At the exchange, a fight breaks out and Nyssa is taken by the League. Oliver almost kills Diggle, but Thea arrives and stops him. In Nanda Parbat, for her betrayal, Ra's orders Nyssa to marry Oliver, and Oliver has to use the Alpha/Omega virus to cleanse Starling City. In flashbacks, Oliver, Maseo, and Tatsu, who were vaccinated, watch as the citizens of Hong Kong, including Maseo and Tatsu's own son Akio, become infected with the virus.
68	22	"This Is Your Sword"	Wendey Stanzler	Story by : Erik Oleson Teleplay by : Ben Sokolowski & Brian Ford Sullivan	May 6, 2015 (2015-05-06)	3J5172	2.54
With Oliver gone, Diggle and Laurel patrol Starling City taking on any criminals they find. Oliver learns that Maseo is the one who provided Ra's with the Omega virus when he originally came to Nanda Parbat. Sneaking away from the castle, Oliver reveals that he is in league with Malcolm, and his agreement to become Ra's heir was a charade to get close to Ra's and slowly dismantle the League from within. With Ra's fast tracking his plan to kill everyone in Starling, Oliver is forced to have Malcolm reveal the truth to his friends. The team, including Tatsu, Ray, and Malcolm go to Nanda Parbat where Tatsu kills Maseo before they are overrun by the League and captured. Ra's exposes the team to the virus before sealing them away in a cell. Afterward, Oliver and Nyssa are married. In flashbacks, Akio continues to deteriorate from the virus, his vaccination having not worked. Maseo and Oliver decide to go after General Shreive to see if he has a cure. They only succeed in leading Shrieve to their location, while Akio dies in Tatsu's arms.
69	23	"My Name Is Oliver Queen"	John Behring	Story by : Greg Berlanti & Andrew Kreisberg Teleplay by : Marc Guggenheim & Jake Coburn	May 13, 2015 (2015-05-13)	3J5173	2.83
While Ra's and Oliver head toward Starling City to release the virus, Felicity and the others wake in the dungeon. Malcolm informs them that he and Oliver created a new vaccine, based on Oliver's blood, which Malcolm used on the team without their awareness. Returning a favor, Barry speeds through the castle disabling the guards and freeing the team. Meanwhile, Oliver reveals his deception and he and Nyssa take out the League's remaining assassins. Ra's escapes with a canister of the virus, vowing to destroy Starling. Oliver learns that Ra's is going to disperse the virus across four points of the city. Felicity locates the four bioweapons, and Oliver organizes the team, along with Captain Lance and the police, to those locations. Oliver is pulled to another location to battle Ra's, as the team successfully stop the virus. Oliver stops and kills Ra's before being shot by a police sniper. Felicity, in Ray's ATOM suit, flies in and rescues Oliver. Afterward, Oliver decides to stop being a hero to the city, instead opting to have a life with Felicity knowing that there are other heroes that can take his place. As payment for his help, Oliver cedes the title of Ra's al Ghul to Malcolm and leaves the league. Ray begins testing a way to miniaturize his ATOM suit, which results in an explosion at Palmer Technologies. In flashbacks, Oliver tortures Shrieve for hours in vengeance before Maseo executes him. Maseo leaves Tatsu in grief and Oliver decides to live a life alone to prevent his family from seeing the darkness that has taken over his life.

Season 4 (2015–16)

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
70	1	"Green Arrow"	Thor Freudenthal	Story by : Greg Berlanti & Beth Schwartz Teleplay by : Marc Guggenheim & Wendy Mericle	October 7, 2015 (2015-10-07)	3J5801	2.67
Diggle, Thea, and Laurel continue fighting crime in Starling City, recently renamed 'Star City' in Ray's honor. The city's leadership, which includes Captain Quentin Lance, meet to discuss a group of criminals named the "Ghosts" who are terrorizing the city. Damien Darhk shows up, claiming to control the Ghosts and warning the city leaders to stand aside and let the city die. After they refuse, Darhk systematically begins assassinating each of them but fails to kill Lance. Laurel and Thea contact Oliver, asking him to return to help them stop the Ghosts, much to the disagreement of Diggle. The team tracks the Ghosts, where they witness Darhk using some form of mystical energy manipulation. Working together, the team stop his plot to kill hundreds at a train station. Afterward, Oliver takes the name "Green Arrow" and broadcasts a message to the city vowing to be a beacon of hope, while Lance is revealed to be working with Darhk. In flashbacks, Amanda Waller finds Oliver and forces him back on Lian Yu to assess a new threat.
71	2	"The Candidate"	John Behring	Marc Guggenheim & Keto Shimizu	October 14, 2015 (2015-10-14)	3J5802	2.50
The team take out another Ghost operation, but Diggle feels like it is not enough and Oliver continues to worry about Thea's excessive aggression when taking out criminals. Meanwhile, Queen family friend Jessica Danforth puts a bid in as the city's new mayor. During her announcement, she is attacked by Lonnie Machin, an anarchist for hire working for Darhk. While trying to locate Machin, Thea's aggressive behavior seriously injures a witness, forcing Oliver to reveal to her the warning Malcolm Merlyn gave him before he put Thea in the Lazarus Pit. The team goes after Machin, successfully stopping him, but Thea again goes too far and sets Machin on fire in the process. Later, Machin escapes police custody en route to the hospital. Laurel decides to take Thea back to Nanda Parbat both to find a way to stop the aggression and to bring Sara's body to the pit. Meanwhile, Oliver decides to run for mayor after Jessica backs out of the race. In flashbacks, Oliver infiltrates a local military operation on Lian Yu run by a man named Reiter. Oliver feigns ignorance of the military operation, but Reiter decides to recruit him for his cause instead of killing Oliver.
72	3	"Restoration"	Wendey Stanzler	Wendy Mericle & Speed Weed	October 21, 2015 (2015-10-21)	3J5803	2.40
Laurel and Thea arrive in Nanda Parbat and request Malcolm, the new Ra's al Ghul, to use the Lazarus Pit to bring Sara back to life. He initially refuses but, in order to appease Thea, he eventually agrees. When Sara returns feral, Nyssa destroys the Lazarus Pit in retaliation. An A.R.G.U.S. operative delivers Diggle information on the woman, Mina Fayad, who hired Floyd Lawton to kill his brother. Fayad also works for H.I.V.E. and meets with Darhk about the growing issue with the vigilantes in Star City. She brings in a metahuman hitman named Jeremy Tell, who can turn his playing card tattoos into physical projectiles. After Tell's initial failure, Darhk kills Fayad for challenging him. Diggle and Oliver team up and take down Tell, but get no new information on H.I.V.E. In flashbacks, Oliver is forced to use torture techniques, after a parcel of drugs goes missing, to interrogate the prisoners who are being used to harvest heroin-cocaine hybrid plants.
73	4	"Beyond Redemption"	Lexi Alexander	Beth Schwartz & Ben Sokolowski	October 28, 2015 (2015-10-28)	3J5805	2.64
Oliver tells the team that he is running for mayor, but is met with apprehension. Lance has Oliver look into the death of two police officers and the team discovers they were killed by members of the Anti-Vigilante Task Force. Laurel brings her father to see Sara, who is chained up in the basement of Laurel's apartment. The team and Lance set a trap for the corrupt cops, but fail to capture them. Felicity identifies Liza Warner as a suspect and, while searching for her, Oliver discovers Captain Lance meeting with Damien Darhk. Liza and her team use Captain Lance to get into the drug disposal warehouse, but Oliver and his team arrive and take out the officers. Later, Oliver asks Captain Lance to spy on Darhk so they can learn more about his operations, while Laurel discovers that Sara has escaped. In flashbacks, Agent Conklin discovers Oliver's communication device with Amanda Waller.
74	5	"Haunted"	John Badham	Brian Ford Sullivan & Oscar Balderrama	November 4, 2015 (2015-11-04)	3J5804	2.60
Oliver discovers Sara is alive when he investigates recent murders. With Felicity's help, they determine that Sara, who is still not herself, is looking for Thea and plans to kill her. Sara attacks Thea, who manages to escape. Later, the team captures Sara and Oliver calls an old friend, John Constantine, to help restore Sara's soul. Meanwhile, Darhk gives Captain Lance a new task to install a computer virus in a security company. Diggle goes along and sees his brother's name among the list of individuals being deleted by the virus. Later, Felicity learns that Ray is still alive and Diggle learns that his brother was killed because he was a drug cartel leader. In flashbacks, Conklin brings Oliver to Reiter, who dismisses accusations that Oliver is a spy. Instead, he introduces them to recent captive John Constantine, who escapes and forces Oliver to help him locate a mystical object on the island. After, John warns Oliver to be wary of Reiter's real plans and uses the object to cast a spell on Oliver for his protection.
75	6	"Lost Souls"	Antonio Negret	Beth Schwartz & Emilio Ortega Aldrich	November 11, 2015 (2015-11-11)	3J5806	2.30
As Oliver works on his campaign, Felicity continues searching for Ray with the help of Curtis Holt. Ray is able to send a new message, letting Felicity know that he survived the explosion because his suit successfully shrank him down to the size of a pea, that he is being held prisoner, and where to find the schematics to build a device to return him to his right size. In a second message, Felicity discovers that Darhk is the one responsible for imprisoning Ray, hoping to get the technology from his suit. As Curtis works on the device, Darhk threatens to hurt Felicity if Ray does not give up his technology willingly. The team tracks Darhk to his hideout and, with the device created by Curtis, they successfully save and restore Ray. Meanwhile, Sara struggles with the bloodlust and decides to leave Star City to gain control. In flashbacks, Reiter sends Oliver on a search for another ancient ruin that is supposed to yield a "gift" for Reiter.
76	7	"Brotherhood"	James Bamford	Speed Weed & Keto Shimizu	November 18, 2015 (2015-11-18)	3J5807	2.69
H.I.V.E. continues to attack parts of the city, most recently destroying money meant for the city bank. Diggle gives Oliver information that H.I.V.E. murdered his brother Andy because he was criminal competition. The team heads to the research lab to locate a chemical they believe is being used by H.I.V.E. The team is attacked by Darhk's group and Diggle discovers that Andy is still alive, working for H.I.V.E. The team tries to get Diggle to recognize the positive, but he refuses to see Andy as anything more than a traitor, unworthy of saving. The team believes Andy is being mind-controlled and locate him and the rest of H.I.V.E. The team successfully extracts Andy with help from Ray and his ATOM suit. After an encounter with Darhk, Thea learns that his powers may help cure her bloodlust permanently after Darhk failed to drain her lifeforce.
77	8	"Legends of Yesterday"	Thor Freudenthal	Story by : Greg Berlanti & Marc Guggenheim Teleplay by : Brian Ford Sullivan & Marc Guggenheim	December 2, 2015 (2015-12-02)	3J5808	3.66
Immortal Vandal Savage searches for Kendra Saunders and Carter Hall, two reincarnated beings who have existed for 4000 years, currently being hidden by Oliver, Barry, and their respective teams. Malcolm orchestrates a meeting between Savage, Barry, and Oliver. Savage demands they turn over Kendra and Carter or he will destroy both Central City and Star City with the Staff of Horus. They devise a plan to deliver the pair as a ruse to get close enough to destroy the staff. The plan fails; Kendra and Carter are killed and Savage uses the staff to destroy everyone else in the city. Barry escapes and runs fast enough to go back in time to the point of the original negotiation with Savage. Barry informs Oliver of his time travel, so they change their approach to the plan. They deliver Kendra and Carter again, but, with everyone's help, Barry is able to steal the staff. He and Oliver use it on Savage, destroying his body. Afterward, Kendra and Carter decide to use their powers to help others in another city. Meanwhile, Oliver learns he has an illegitimate son, William, and decides to develop a relationship with him without telling Felicity. Malcolm collects Savage's ashes. This episode concludes a crossover with The Flash that begins on "Legends of Today". The two episodes also set up Legends of Tomorrow.
78	9	"Dark Waters"	John Behring	Wendy Mericle & Ben Sokolowski	December 9, 2015 (2015-12-09)	3J5809	2.82
Oliver's campaign starts an initiative to clean up the Star City bay. Darhk sends a drone to the bay and begins shooting at the citizens helping, injuring several. In response, Oliver and his team decide to call out Darhk to the media as the leader of H.I.V.E. and the Ghosts. In retaliation, Darhk crashes Oliver's campaign holiday party and kidnaps Diggle, Felicity, and Thea. After failing to get any information from Darhk's soldiers, Oliver makes contact and agrees to exchange himself for them. Darhk tricks Oliver and attempts to kill them all in front of him. Malcolm, dressed as Green Arrow, and Laurel arrive and rescue everyone. Afterward, at the campaign tree lighting, Oliver proposes to Felicity, who accepts. As they leave, Darhk's men shoot up Oliver's limo and hit Felicity. In flashbacks, Oliver returns to the ship the Amazo to acquire more maps of the island, but, when he returns, he is discovered by Conklin.
79	10	"Blood Debts"	Jesse Warn	Oscar Balderrama & Sarah Tarkoff	January 20, 2016 (2016-01-20)	3J5810	2.83
With Felicity in and out of surgery for her gunshot wounds, Oliver and the team continue searching for Darhk. Oliver turns to Captain Lance for information on Darhk's location, while Diggle interrogates his brother Andy. They track down Darhk's location, but find only several dead Ghost soldiers and an anarchy symbol painted in blood. The team realize that Lonnie Machin is back and out for revenge against Darhk. Machin is caught and Oliver interrogates him for information on Darhk. Eventually, Oliver sets Machin free to go after Darhk, tracking him in the process. Machin goes after Darhk's family; the team arrives and saves them, but Machin escapes. As payment for saving his family, Darhk grants Oliver time to spend with his own family before Darhk kills him. Meanwhile, Felicity is left paralyzed from being shot. In flashbacks, Conklin presents Oliver as a traitor and the maps he found as proof to Reiter. While Conklin tortures Oliver, Reiter notices the spell on Oliver's stomach and forces Conklin to stop. In exchange for another prisoner's life, Oliver agrees to help Reiter.
80	11	"A.W.O.L."	Charlotte Brändström	Brian Ford Sullivan & Emilio Ortega Aldrich	January 27, 2016 (2016-01-27)	3J5811	2.78
Felicity returns home from the hospital, trying to figure out her place on the team now that she is a paraplegic. While Diggle and Lyla are out on a date, an A.R.G.U.S. agent seeks them out for assistance, but he is kidnapped before he can tell the pair what is happening. Diggle and Lyla go to Amanda Waller, who denies any knowledge of what happened but gives Lyla a portable hard drive that reveals the operative was taken by an organization known as "Shadowspire". Diggle recognizes the name and recounts first meeting the war profiteering group in Afghanistan. With Andy's help, the team tracks Shadowspire. Oliver pressures Felicity for help, who has started having hallucinations of her hacker counterpart. She struggles under the pressure and Diggle is almost killed. Shadowspire infiltrates A.R.G.U.S. looking for the access codes to a project known as "Rubicon", killing Amanda Waller when she refuses to help. Oliver and the team, with Felicity's assistance, enter A.R.G.U.S. and stop Shadowspire. In flashbacks, Reiter is revealed as the leader of Shadowspire.
81	12	"Unchained"	Kevin Fair	Speed Weed & Beth Schwartz	February 3, 2016 (2016-02-03)	3J5812	2.48
The team goes after a burglar and Oliver and Thea manage to corner him. He escapes when Thea loses consciousness and almost falls off a building. Malcolm reveals to Oliver that this is Thea's bloodlust; since she has not taken a life, the bloodlust is killing her. Felicity tracks the burglar again. Oliver stops him but, when it is revealed to be Roy Harper, Oliver's surprise allows Roy to escape. They track Roy to Palmer Tech, where they discover he is being controlled by a man who goes by the name the Calculator. Felicity tracks the Calculator through the web, who reveals he intends to shut down the entire city, killing everyone in the process. The team locates his bomb and destroys it before it can shut down the city infrastructure. Meanwhile, Darhk's wife enters the mayoral race, Thea slips into a coma, the Calculator is revealed to be Felicity's father, and Nyssa escapes her cell in Nanda Parbat to offer Oliver a cure for Thea in exchange for Malcolm's life. In flashbacks, Reiter tortures Oliver for information on the maps he acquired with Oliver starting to hallucinate seeing Shado.
82	13	"Sins of the Father"	Gordon Verheul	Ben Sokolowski & Keto Shimizu	February 10, 2016 (2016-02-10)	3J5813	2.44
Oliver refuses Nyssa's offer; instead, he attempts to convince Malcolm to relinquish control of the League to Nyssa in exchange for the cure. Malcolm claims Nyssa is lying and refuses to go along, while Nyssa agrees but proclaims that, if Malcolm backs out, everyone will be considered an enemy. Oliver convinces Nyssa to provide a sample to prove to Merlyn she is not lying. After witnessing Thea get better, Malcolm agrees to the deal. At the exchange, Malcolm double-crosses Nyssa and she is forced to retreat. Oliver convinces Malcolm to challenge Nyssa to a duel with the winner controlling the League. Before they fight, Oliver uses ancient rules to trade places with Nyssa as her husband. Oliver bests Malcolm but, instead of killing him, cuts off the hand wearing the Demon's Head ring and knocks Malcolm unconscious. Oliver exchanges the ring for the cure. Realizing her mistake, Nyssa disbands the League and destroys the ring. Angered by Oliver's betrayal, Malcolm informs Darhk about Oliver's son. In flashbacks, Reiter takes a stone from Oliver that has the symbols he seeks.
83	14	"Code of Silence"	James Bamford	Wendy Mericle & Oscar Balderrama	February 17, 2016 (2016-02-17)	3J5814	2.44
Malcolm joins Darhk, his wife Ruvé Adams, and the other leaders of H.I.V.E. and it is revealed that they are moving on to "Phase 5" of their plan. In order to tie-up loose ends, Darhk sends a group of mercenaries, known as the Demolition Team, to take out Captain Lance. They fail and Felicity is able to track them to their hideout. Oliver, Thea, Laurel, and Diggle go after them, but are almost killed when the Demolition Team destroys their own building to escape. Meanwhile, Thea discovers that Oliver has a son and supports his decision to keep it a secret. With Curtis' help, Felicity realizes that the Demolition Team is planning to destroy the venue for the mayoral debate between Oliver and Ruvé, leaving Ruvé alive as a sympathetic survivor. Oliver and his team stop the mercenaries in time for Oliver to win the debate. After, Darhk kidnaps William. In flashbacks, Oliver kills Conklin to win the trust of the other prisoners as Reiter forces them to dig for the "ultimate power" hidden on the island.
84	15	"Taken"	Gregory Smith	Story by : Marc Guggenheim Teleplay by : Keto Shimizu & Brian Ford Sullivan	February 24, 2016 (2016-02-24)	3J5815	2.70
Darhk reveals to Oliver that he has William and will only return him if Oliver drops out of the mayoral race. Oliver is forced to reveal the truth about his son to the rest of the team, which causes a rift between him and Felicity. Oliver asks a Detroit-based superhero named Vixen for help, as her powers are derived from magic. Vixen tracks William's location and the team goes in to rescue him. They only find Darhk and his men, as William has already been moved. The attack causes Darhk to demand an immediate resignation from Oliver, along with unconditional support for Ruvé Adams. After, the team discovers the root of Darhk's powers and sets a plan to destroy his mystical idol. The plan works; Darhk is left powerless and arrested, while William is saved. They also discover that Malcolm was the one who kidnapped William. Later, Oliver sends William and his mother away for safety. Felicity also decides to break up with Oliver and, with a bio-mechanical implant from Curtis, she is able to walk again. In flashbacks, a passage is discovered that leads to Reiter's "ultimate power" and the spell on Oliver's stomach allows him to pass unharmed.
85	16	"Broken Hearts"	John Showalter	Rebecca Bellotto & Nolan Dunbar	March 23, 2016 (2016-03-23)	3J5816	2.09
Cupid returns to Star City and begins targeting high profile couples. While the team works to track her whereabouts and prevent any more killings, Laurel works in court fighting Damien Darhk's attempt to have the charges dismissed against him. After several failed attempts to find a suitable witness, Captain Lance volunteers to testify to his involvement with Darhk. The team discovers that Cupid is targeting couples that have recently been married. In order to draw her out, Oliver convinces Felicity to stage a "secret" wedding with him to set themselves up as targets, intentionally leaking the information to the media. The plan works and Cupid attacks Oliver and Felicity at the ceremony. Felicity distracts her long enough for Diggle and Thea to apprehend her. At the trial, Captain Lance's testimony is deemed sufficient to establish probable cause for the charges and Darhk is remanded into custody without bail. Captain Lance is suspended pending an investigation, while Felicity quits the team for good. In flashbacks, Oliver leads Reiter to a mystical idol, but steals it and runs off into the tunnels.
86	17	"Beacon of Hope"	Michael Schultz	Ben Sokolowski & Brian Ford Sullivan	March 30, 2016 (2016-03-30)	3J5817	2.34
Brie Larvan orchestrates her release from prison and travels to Star City in search of the bio-mechanical chip that is being used to allow Felicity to walk. Brie attacks Palmer Tech, holding the board hostage until Felicity turns herself over. Curtis tracks down Oliver's hideout, discovering his secret in the process, so that he can offer his help to the team to save Felicity, her mother, and Thea. The team arrives at Palmer Tech, but Oliver is stung by one of Brie's robotic bees. Back at the hideout, Curtis realizes the sting actually implanted a bee within Oliver that is replicating itself. Laurel uses her Canary Cry to disrupt the frequency controlling the bees and save Oliver. Felicity is able to evacuate the board members, while Brie reveals she is after the chip because she has a tumor that is going to leave her paralyzed. Curtis develops a virus to shut down the bees and uses them to stop Brie. In flashbacks, Oliver goes after Reiter, who reveals that the idol has already started to grant him mystical powers. As his powers dwindle, Reiter escapes into the tunnels.
87	18	"Eleven-Fifty-Nine"	Rob Hardy	Marc Guggenheim & Keto Shimizu	April 6, 2016 (2016-04-06)	3J5818	2.24
Andy Diggle tells his brother that he was approached by Malcolm about a plan to break Darhk out of prison. Oliver and Diggle foil H.I.V.E.'s plan, but it turns out to be a ruse designed to let Malcolm and his League followers invade the bunker and steal Darhk's idol. The team attempts to locate Malcolm with Andy providing intel. Malcolm delivers the idol to Darhk, but it will not work because it is incomplete. Diggle reveals to Andy that he personally hid the missing piece in another location. Oliver does not trust Andy and confronts him; Diggle interrupts the interrogation and sides with his brother. Darhk orchestrates a prison riot and the team sets out to stop him with Andy joining them. However, when the team reaches Darhk, Andy turns on them and gives Darhk the missing piece to his idol. With his powers restored, Darhk stabs Laurel as revenge upon Captain Lance before escaping with Malcolm, Andy, and several inmates. Laurel later dies at the hospital. In flashbacks, Oliver helps the island prisoners escape and sets off a bomb to bury Reiter and keep him from leaving the tunnels.
88	19	"Canary Cry"	Laura Belsey	Wendy Mericle & Beth Schwartz	April 27, 2016 (2016-04-27)	3J5819	2.27
As the team mourns Laurel's death and tries to determine their next move against Darhk, there is a sighting of the Black Canary stopping an illegal weapons exchange. Oliver discovers that Laurel's sonic device is missing from her belongings from the hospital. The imposter turns out to be a H.I.V.E. prisoner named Evelyn Sharp who Oliver left behind after he saved his team when they were kidnapped by Darhk, believing that she was with Darhk voluntarily. Captain Lance looks for a way to resurrect Laurel, even soliciting Nyssa al Ghul for help. Diggle, angry at being betrayed by Andy, goes after Darhk's wife, Ruvé Adams, but Oliver intervenes to prevent him from doing something he would regret. As a result, Ruvé uses her mayoral authority to issue arrest warrants for all vigilantes. Sharp goes after Ruvé publicly, but Oliver is able to talk her out of killing the Mayor. At Laurel's funeral, Oliver reveals Laurel as the Black Canary to preserve her image with the city. Afterwards, Oliver vows to kill Darhk. In flashbacks, Oliver and Laurel struggle to come to terms with Tommy Merlyn's death. In the end, Oliver leaves Laurel to cope on her own and returns to the island of Lian Yu.
89	20	"Genesis"	Gregory Smith	Oscar Balderrama & Emilio Ortega Aldrich	May 4, 2016 (2016-05-04)	3J5820	2.07
Darhk returns to H.I.V.E. and kills the remaining board members before renewing his plans for "Genesis." Oliver and Felicity meet an immortal shaman, Fortuna, who educates Oliver about dark magic. Fortuna explains that Darhk's idol channels darkness and death, feeding him more power, but there is an opposing force that channels light and hope. After a mystical ritual, Fortuna tells Oliver that the darkness inside him is too strong to channel the light. In Star City, Diggle locates Andy, but is captured after a brief shootout. Andy puts a tracking device on him, then allows Diggle to escape so that Darhk and his team can go after Diggle, Lyla, and their daughter to steal "Rubicon", the key to the world's nuclear weapons. Oliver manages to stop Darhk by channeling the power of light, nullifying Darhk's powers and forcing him to retreat. Diggle and Andy battle again with Diggle ultimately killing his brother. Thea is taken by H.I.V.E. to a secret underground city. The team realizes that Darhk plans to detonate nuclear weapons and build a new world over the ashes.
90	21	"Monument Point"	Kevin Tancharoen	Speed Weed & Jenny Lynn	May 11, 2016 (2016-05-11)	3J5821	2.16
Darhk begins taking control of the world's nuclear missiles. The team seeks out Felicity's father, Noah, to help disable the "Rubicon" program. Darhk sends Danny Brickwell and Michael Amar to find and kill Noah, but Oliver and his team are able to rescue him from Darhk's men. Noah agrees to help, but requires a high-powered processor from Palmer Tech. Felicity learns she has been fired as CEO and is unable to get the processor, forcing the team to break in and steal it. H.I.V.E. locates the team when Noah hacks into "Rubicon". As H.I.V.E. attacks, Felicity and her father shut down "Rubicon" and stop all the missiles but one, which launches and heads to Monument Point. Felicity can only redirect it to a less populated town, where it detonates. Oliver and Diggle find Darhk in the Star City nexus chamber, gathering more power from all the deaths caused by the explosion. In flashbacks, Reiter escapes the cave-in, but Oliver and Taiana steal the idol back. The idol then begins to affect Taiana.
91	22	"Lost in the Flood"	Glen Winter	Brian Ford Sullivan & Oscar Balderrama	May 18, 2016 (2016-05-18)	3J5822	1.94
His power grown exponentially, Darhk attempts to reactivate "Rubicon" with the help of Felicity's former boyfriend, Cooper, and launch the remaining missiles. However, Noah, Felicity, and Curtis successfully shut down "Rubicon" for good. Meanwhile, Oliver and Diggle discover the underground town and track Thea's whereabouts. Malcolm uses a mind-controlling drug on her which makes her turn on Oliver, but Oliver manages to talk her back to reality. Just then, Lonnie Machin takes over H.I.V.E.'s command center and threatens to destroy Darhk's town. Oliver, Diggle and Thea intercede, but the main power source is ruptured and explodes, destroying the city. The town is evacuated and Machin escapes, but not before killing Ruvé Adams. In response, Darhk plans to use "Rubicon" to destroy the Earth and shows up at Oliver's home where Felicity, her mother, and Curtis are. In flashbacks, the idol begins to slowly corrupt Taiana, feeding her ever more power from each soldier she and Oliver kill. Oliver takes the idol and tries to talk her down, but Reiter suddenly arrives and confronts them both.
92	23	"Schism"	John Behring	Story by : Greg Berlanti Teleplay by : Wendy Mericle & Marc Guggenheim	May 25, 2016 (2016-05-25)	3J5823	2.19
Darhk steals the laptop keeping him locked out of "Rubicon" and launches over 15,000 nuclear missiles, giving the team two hours to prevent worldwide annihilation. With Star City citizens rioting, Oliver addresses everyone directly, inspiring hope in them to stay strong, while Felicity and Curtis divert the missile aimed at Star City. Oliver goes after Darhk, while Felicity, Merlyn, and Thea track down "Rubicon". Felicity is able to convince Cooper to stop helping Darhk, at the cost of his life. Curtis devises a means to stop the missiles. Oliver is able to nullify Darhk's powers with the hope he inspired throughout the city. While the citizens of Star City take on Darhk's remaining men, Oliver and Darhk physically battle, with Oliver killing Darhk. Afterward, Lance, Thea, and Diggle leave the team for new lives, and Oliver is appointed Mayor. In flashbacks, Reiter and Taiana fight; Taiana is able to drain Reiter's life force enough for Oliver to kill him. After, Oliver is forced to kill Taiana, at her request, when she is unable to escape the darkness within. Oliver radios Amanda Waller to rescue the rest of the prisoners and keep the idol safe, intending to go to Russia to honor his promise to Taiana.

Season 5

No. overall	No. in season	Title	Directed by	Written by	Original air date	Prod. code	U.S. viewers (millions)
93	1	"Legacy"	James Bamford	Story by : Greg Berlanti Teleplay by : Marc Guggenheim & Wendy Mericle	October 5, 2016 (2016-10-05)	3J5201	N/A
94	2	TBA	James Bamford	TBA	TBA	TBA	TBD

Home media

Season	DVD release dates			Blu-ray release dates
	Region 1	Region 2	Region 4	Region A	Region B
1	September 17, 2013	September 23, 2013	October 2, 2013	September 17, 2013	September 23, 2013
2	September 16, 2014	September 22, 2014	December 3, 2014	September 16, 2014	September 22, 2014
3	September 22, 2015	September 28, 2015	September 23, 2015	September 22, 2015	September 28, 2015
4	August 30, 2016	September 5, 2016	TBA	August 30, 2016	September 5, 2016

References

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External links

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• Template:Official website
• Template:IMDb episodes
• List of Arrow episodes at The Futon Critic
• Template:Tv.com show

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