Star Trek: The Original Series (season 2)

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Star Trek: The Original Series (season 2)
Country of origin United States
No. of episodes 26
Original channel NBC
Original run September 15, 1967 (1967-09-15) – March 29, 1968 (1968-03-29)
Home video release
DVD release
Region 1 November 2, 2004 (2004-11-02) (Original)
August 5, 2008 (2008-08-05) (Remastered)
Region 2 November 1, 2004 (2004-11-01) (Original)
April 27, 2009 (2009-04-27) (Remastered)
Blu-ray Disc release
Region A September 22, 2009 (2009-09-22)
Region B November 16, 2009 (2009-11-16)
Season chronology
← Previous
Season 1
Next →
Season 3
List of Star Trek: The Original Series episodes

This is a list of episodes from the second season of the original Star Trek series.

Broadcast history[edit]

The season originally aired Fridays at 8:30-9:30 pm (EST) on NBC.

DVD/Blu-ray release[edit]

The season was released on DVD and Blu-ray by Paramount Home Entertainment.


No. in
No. in
Title Stardate[1] Directed by Written by Original air date[2] Production
30 1 "Amok Time" 3372.7 Joseph Pevney Theodore Sturgeon September 15, 1967 (1967-09-15) 34
When Mr. Spock begins behaving aggressively, Kirk discovers his first officer must return home to Vulcan to be married, or die. Kirk disobeys his orders to save Spock, only to find the unbalanced Vulcan at his throat when the bride forces Spock into a duel – and chooses the captain as her champion.[3]
31 2 "Who Mourns for Adonais?" 3468.1 Marc Daniels Gilbert Ralston September 22, 1967 (1967-09-22) 33
The crew of the Enterprise are held captive by an alien who claims to be the Greek god Apollo.[3]
32 3 "The Changeling" 3541.9 Marc Daniels John Meredyth Lucas September 29, 1967 (1967-09-29) 37
The crew of the Enterprise deals with Nomad—an indestructible, planet-destroying space probe that thinks Kirk is its creator. Star Trek: The Motion Picture was in part an expansion of this episode.[3]
33 4 "Mirror, Mirror" Unknown Marc Daniels Jerome Bixby October 6, 1967 (1967-10-06) 39
A transporter mishap slips Captain Kirk and his companions into a parallel universe, where the Enterprise serves a barbaric Empire instead of the Federation. This episode spun off several plotlines in Deep Space Nine and Enterprise.[3]
34 5 "The Apple" 3715.3 Joseph Pevney Teleplay: Max Ehrlich and Gene L. Coon
Story: Max Ehrlich
October 13, 1967 (1967-10-13) 38
The crew of the Enterprise visits a mysterious and deadly paradise planet which they discover is controlled by a machine called Vaal.[3]
35 6 "The Doomsday Machine" 4202.9 Marc Daniels Norman Spinrad October 20, 1967 (1967-10-20) 35
After losing his entire crew to an alien planet-eating machine, Commodore Matthew Decker pulls rank on Kirk in order to play a game of cat-and-mouse with the mechanical adversary. His efforts to destroy the menace place the Enterprise in grave danger. This episode serves as the back story for the Star Trek 25th Anniversary Game Boy game.[3]
36 7 "Catspaw" 3018.2 Joseph Pevney Robert Bloch October 27, 1967 (1967-10-27) 30
Two powerful aliens threaten the well-being of the Enterprise and her crew with their magical powers.[3]
37 8 "I, Mudd" 4513.3 Marc Daniels Stephen Kandel November 3, 1967 (1967-11-03) 41
Captain Kirk and the crew has a second run in with the con man, Harry Mudd, this time finding him as the king of a planet of androids.[3]
38 9 "Metamorphosis" 3219.4 Ralph Senensky Gene L. Coon November 10, 1967 (1967-11-10) 31
A shuttle crew from the Enterprise encounters a castaway (who appears to be Zefram Cochrane, the inventor of warp drive) and his mysterious alien companion.[3]
39 10 "Journey to Babel" 3842.3 Joseph Pevney D. C. Fontana November 17, 1967 (1967-11-17) 44
While transporting dignitaries to an important peace conference the Enterprise is pursued by a mysterious vessel and an assassin is discovered among the passengers.[3]
40 11 "Friday's Child" 3497.2 Joseph Pevney D. C. Fontana December 1, 1967 (1967-12-01) 32
The crew of the Enterprise become entangled in a planet's tribal power struggle.[3]
41 12 "The Deadly Years" 3478.2 Joseph Pevney David P. Harmon December 8, 1967 (1967-12-08) 40
Strange radiation exposes the command crew of the Enterprise to the effects of rapid aging.[3]
42 13 "Obsession" 3619.2 Ralph Senensky Art Wallace December 15, 1967 (1967-12-15) 47
Captain Kirk becomes obsessed with destroying a murderous entity that killed many of the crew of his old ship.[3]
43 14 "Wolf in the Fold" 3614.9 Joseph Pevney Robert Bloch December 22, 1967 (1967-12-22) 36
Mr. Scott is implicated in a series of bizarre murders.[3]
44 15 "The Trouble with Tribbles" 4523.3 Joseph Pevney David Gerrold December 29, 1967 (1967-12-29) 42
Tribbles – purring, limbless, and fertile – disrupt the exploitation of a disputed planet between the Klingons and Federation.[3]
45 16 "The Gamesters of Triskelion" 3211.7 Gene Nelson Margaret Armen January 5, 1968 (1968-01-05) 46
Captain Kirk, Chekov and Uhura are kidnapped by powerful disembodied aliens and forced to fight in gladiatorial contests for the aliens' gambling entertainment.[3]
46 17 "A Piece of the Action" 4598.0 James Komack Teleplay: David P. Harmon and Gene L. Coon
Story: David P. Harmon
January 12, 1968 (1968-01-12) 49
The Enterprise visits a planet with a violent culture based on Americas 1920s prohibition era.[3]
47 18 "The Immunity Syndrome" 4307.1 Joseph Pevney Robert Sabaroff January 19, 1968 (1968-01-19) 48
The crew of the Enterprise encounters an energy-draining space creature.[3]
48 19 "A Private Little War" 4211.4 Marc Daniels Teleplay: Gene Roddenberry
Story: Jud Crucis
February 2, 1968 (1968-02-02) 45
Captain Kirk must decide how to save a primitive people from the technological interference of the Klingons.[3]
49 20 "Return to Tomorrow" 4768.3 Ralph Senensky John Kingsbridge February 9, 1968 (1968-02-09) 51
Telepathic aliens take control of Kirk and Spock's bodies with the intention to build new, mechanized bodies for themselves.[3]
50 21 "Patterns of Force" 2534.0 Vincent McEveety John Meredyth Lucas February 16, 1968 (1968-02-16) 52
The crew of the Enterprise visits a planet dominated by a Nazi culture and at war with its planetary neighbor.[3]
51 22 "By Any Other Name" 4657.5 Marc Daniels Teleplay: D. C. Fontana and Jerome Bixby
Story: Jerome Bixby
February 23, 1968 (1968-02-23) 50
Beings from the Andromeda Galaxy steal the Enterprise, technically modify it, and attempt to return home.[3]
52 23 "The Omega Glory" Unknown Vincent McEveety Gene Roddenberry March 1, 1968 (1968-03-01) 54
Captain Kirk must battle a deadly virus and a treacherous fellow starship captain to stop a meaningless intertribal war.[3]
53 24 "The Ultimate Computer" 4729.4 John Meredyth Lucas Teleplay: D. C. Fontana
Story: Laurence N. Wolfe
March 8, 1968 (1968-03-08) 53
A new computer system causes havoc while being tested aboard the Enterprise.[3]
54 25 "Bread and Circuses" 4040.7 Ralph Senensky Gene Roddenberry & Gene L. Coon March 15, 1968 (1968-03-15) 43
Captain Kirk and his companions are forced to fight in gladiatorial games on a planet modeled after the Roman Empire.[3]
55 26 "Assignment: Earth" Unknown Marc Daniels Teleplay: Art Wallace
Story: Gene Roddenberry & Art Wallace
March 29, 1968 (1968-03-29) 55
During a historical research mission in 1968, the Enterprise encounters Gary Seven, a human from the future who appears to be attempting to alter history.[3]


  1. ^ Trimble, Bjo (1976). Star Trek Concordance. New York: Ballantine Books. pp. 12–13. ISBN 0-345-25137-7. 
  2. ^ Trimble, Bjo (1976). Star Trek Concordance. New York: Ballantine Books. pp. 37–89. ISBN 0-345-25137-7. 
  3. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z "Star Trek: Episodes (Season 2)". Archived from the original on 2009-06-03. Retrieved 2009-06-04.