List of Star Trek TOS episodes

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Complete DVD set

This is a list of Star Trek: The Original Series episodes, in the order that they originally aired on NBC, with the original air dates. NBC aired the episodes out of order, therefore the first episode of the series actually broadcast was "The Man Trap" while the second pilot, "Where No Man Has Gone Before" was, somewhat confusingly for viewers, aired third.

Some television syndication packages include a retrospective, Star Trek Memories hosted by Leonard Nimoy, which was produced prior to the release of Star Trek III: The Search for Spock, as an 80th episode. The first pilot "The Cage" is usually distributed separately from the rest of the series for broadcast purposes.


  1. "The Cage" (first pilot, partly aired in "The Menagerie")
  2. "Where No Man Has Gone Before" (second pilot, 9/22/1966)

Season 1 (1966-1967)

# Title Airdate Stardate Overview
1 "The Man Trap" September 8 1513.1 A shape shifting, salt hungry creature, terrorizes the crew of the Enterprise.
2 "Charlie X" September 15 1533.6 The Enterprise picks up an unstable teenage boy with dangerous mental powers.
3 "Where No Man Has Gone Before" September 22 1312.4 The Enterprise journeys to the edge of the galaxy, where two crew members develop dangerous psychic powers.
4 "The Naked Time" September 29 1704.2 A strange virus infects the crew of the Enterprise, destroying their minds.
5 "The Enemy Within" October 6 1672.1 A transporter mishap creates Captain Kirk's evil twin.
6 "Mudd's Women" October 13 1329.1 The Enterprise picks up an intergalactic con man and his "beautiful" female cargo.
7 "What are Little Girls Made Of?" October 20 2712.4 Nurse Chapel searches for her long lost fiancé, and uncovers his secret plan for galactic conquest.
8 "Miri" October 27 2713.5 The Enterprise discovers an exact duplicate of Earth, where the only survivors of a deadly plague are the planet's children.
9 "Dagger of the Mind" November 3 2715.1 The Enterprise visits a prison planet where a new treatment for the criminally insane has deadly results.
10 "The Corbomite Maneuver" November 10 1512.2 The Enterprise encounters a massive starship and its unusual pilot.
11 "The Menagerie" part 1 November 17 3012.4 Spock helps his former Captain, Christopher Pike, return to Talos IV.
12 "The Menagerie" part 2 November 24 3013.1 Spock helps his former Captain, Christopher Pike, return to Talos IV.
13 "The Conscience of the King" December 8 2817.6 Captain Kirk crosses paths with a murderous dictator.
14 "Balance of Terror" December 15 1709.2 The crew of the Enterprise face off with the Romulans, in a test of power.
15 "Shore Leave" December 29 3025.3 The crew of the Enterprise visits a bizarre planet of dangerous illusions.
16 "The Galileo Seven" January 5 2821.5 Mr. Spock leads a team aboard an Enterprise shuttlecraft on an ill-fated mission.
17 "The Squire of Gothos" January 12 2124.5 A powerful being torments the crew of the Enterprise.
18 "Arena" January 19 3045.6 Captain Kirk fights in a bare-handed duel with an alien adversary.
19 "Tomorrow is Yesterday" January 26 3113.2 The crew of the Enterprise travels back to 1960's Earth, and must correct damage they caused to the timeline.
20 "Court Martial" February 2 2947.3 Captain Kirk stands trial on charges of negligence.
21 "The Return of the Archons" February 9 3156.2 The crew of the Enterprise encounters a world controlled by an unseen leader.
22 "Space Seed" February 16 3141.9 The crew of the Enterprise awakens a powerful dictator from Earth's dreadful past.
23 "A Taste of Armageddon" February 23 3192.1 The crew of the Enterprise visits a planet whose people fight a strange war with a neighboring enemy.
24 "This Side of Paradise" March 2 3417.3 The Enterprise visits a planet, where the inhabitants are kept in check by some strange plant life.
25 "The Devil in the Dark" March 9 3196.1 Captain Kirk faces off with a deadly subterranean beast.
26 "Errand of Mercy" March 16 3198.4 In a state of war with the Klingons, Kirk and Spock attempt to sway the incomprehensibly placid population of a planet to their side.
27 "The Alternative Factor" March 23 3087.6 The crew of the Enterprise encounters a reality jumping madman.
28 "The City on the Edge of Forever" April 6 3134.0 The crew of the Enterprise discover a portal through space and time, which leads to McCoy accidentally altering history.
29 "Operation: Annihilate!" April 13 3287.2 The crew of the Enterprise exterminate parasitic creatures that have taken over a Federation colony.

Season 2 (1967-1968)

# Title Airdate Stardate Overview
1 "Amok Time" September 15 3372.7 Mr. Spock returns to his homeworld for a brutal Vulcan marriage ritual.
2 "Who Mourns for Adonais?" September 22 3468.1 The crew of the Enterprise are held captive by the Greek god Apollo.
3 "The Changeling" September 29 3451.9 The crew of the Enterprise deals with a indestructible planet destroying robot.
4 "Mirror, Mirror" October 6 Unknown A transporter mishap slips Captain Kirk and his companions into a parallel universe.
5 "The Apple" October 13 3715.0 The crew of the Enterprise visits a mysterious paradise controlled by computer.
6 "The Doomsday Machine" October 20 4202.9 The Enterprise plays a deadly game of cat-and-mouse with an alien planet killing machine.
7 "Catspaw" October 27 3018.2 Two powerful aliens threaten the well being of the Enterprise and her crew.
8 "I, Mudd" November 3 4513.3 Captain Kirk has a second run in with the conman, Harry Mudd, and his army of androids.
9 "Metamorphosis" November 10 3219.4 A shuttle crew from the Enterprise encounters a castaway and his mysterious alien companion.
10 "Journey to Babel" November 17 3842.3 The Enterprise must transport dignitaries to an peace conference, with an assassin on the loose.
11 "Friday's Child" December 1 3497.2 The crew of the Enterprise become entangled in a planet's tribal power struggle.
12 "The Deadly Years" December 8 3478.2 Strange radiation exposes the command crew of the Enterprise to the effects of rapid aging.
13 "Obsession" December 15 3619.2 Captain Kirk becomes obsessed with destroying a murderous entity.
14 "Wolf in the Fold" December 22 3614.9 A series of bizarre murders points to Mr. Scott as the primary suspect.
15 "The Trouble with Tribbles" December 29 4523.3 Little critters invade a Federation star base, and foil an enemy's plans.
16 "The Gamesters of Triskelion" January 5 3211.7 Captain Kirk and his companions are sent to fight as gladiators for the gambling entertainment of three disembodied beings.
17 "A Piece of the Action" January 12 4598.0 The Enterprise visits a planet with an Earth-like 1920s gangster culture.
18 "The Immunity Syndrome" January 19 4307.1 The crew of the Enterprise encounters an energy-draining space creature.
19 "A Private Little War" February 2 4211.4 Captain Kirk must save a primitive people from the technological interference of the Klingons.
20 "Return to Tomorrow" February 9 4768.3 Telepathic aliens take control of Kirk and Spock's bodies.
21 "Patterns of Force" February 16 2534.0 The crew of the Enterprise visits a planet dominated by a Nazi regime.
22 "By Any Other Name" February 23 4657.5 Beings from another galaxy steal the Enterprise in an attempt to return home.
23 "The Omega Glory" March 1 Unknown Captain Kirk must battle a deadly virus and prevent a meaningless war.
24 "The Ultimate Computer" March 8 4729.4 A new battle computer causes havoc aboard the Enterprise.
25 "Bread and Circuses" March 15 4040.7 Captain Kirk and his companions are forced to fight in gladiatorial games on a planet modeled after the Roman Empire.
26 "Assignment: Earth" March 29 Unknown Time warping back to Earth of the 1960's, the crew of the Enterprise encounters an intergalactic superspy, who tries to interfere with 20th Century events.

Season 3 (1968-1969)

# Title Airdate Stardate Overview
1 "Spock's Brain" September 20 5431.4 Captain Kirk pursues aliens who have stolen Spock's brain.
2 "The Enterprise Incident" September 27 5027.3 The crew of the Enterprise attempts to steal a Romulan cloaking device.
3 "The Paradise Syndrome" October 4 4842.6 An alien device on a primitive planet, erases Captain Kirk's memory, and he begins a life as one of the natives.
4 "And the Children Shall Lead" October 11 5029.5 The crew of the Enterprise rescues a group of children stranded on a planet, along with their "evil" imaginary friend.
5 "Is There in Truth No Beauty?" October 18 5630.7 The Enterprise travels with an alien ambassador, whose appearance causes insanity.
6 "Spectre of the Gun" October 25 4385.3 For having trespassed on an alien world, Captain Kirk and his companions are forced to re-enact the shoot out at the O.K. Corral.
7 "Day of the Dove" November 1 Unknown An alien force drives the crew of the Enterprise into brutal conflict with the Klingons.
8 "For the World is Hollow and I Have Touched the Sky" November 8 5476.3 The crew of the Enterprise rush to stop an asteroid from colliding with a Federation world, but discover the asteroid is also inhabited.
9 "The Tholian Web" November 15 5693.2 Captain Kirk is caught between dimensions while the Enterprise is trapped by an energy draining web spun by mysterious aliens.
10 "Plato's Stepchildren" November 22 5784.0 The crew of the Enterprise encounters a mischievous race of humanoids.
11 "Wink of an Eye" November 29 5710.5 Invisible "time-accelerated" aliens take over the Enterprise and attempt to abduct the crew for use as "genetic stock".
12 "The Empath" December 6 5121.0 While visiting a doomed planet, the landing party is subject to torturous experiments to test an empathic race.
13 "Elaan of Troyius" December 20 4372.5 Captain Kirk hosts a spoiled princess, who must bring peace to a star system at war.
14 "Whom Gods Destroy" January 3 5718.3 Kirk faces off with an insane starship captain destined to control the universe.
15 "Let That Be Your Last Battlefield" January 10 5730.2 The Enterprise picks up the last two survivors of a war torn planet who are still committed to destroy each other aboard the ship.
16 "The Mark of Gideon" January 17 5423.4 A race of overpopulated aliens abduct Kirk to solve their problem.
17 "That Which Survives" January 24 2124.5 The crew of the Enterprise visits an abandoned outpost guarded by a mysterious computer.
18 "The Lights of Zetar" January 31 5725.3 Strange incorporeal aliens threaten the Memory Alpha station and the Enterprise.
19 "Requiem for Methuselah" February 14 5843.7 The crew of the Enterprise encounter an immortal human.
20 "The Way to Eden" February 21 5832.3 The Enterprise is hijacked by a criminal doctor and his loyal followers in an attempt to find paradise.
21 "The Cloud Minders" February 28 5818.4 Kirk races against time to acquire plague-fighting minerals from a world in the midst of a civil uprising.
22 "The Savage Curtain" March 7 5906.4 Aliens force Kirk and Spock to battle illusionary villains.
23 "All Our Yesterdays" March 14 5943.7 The crew of the Enterprise are trapped inside a time portal on a world threatened by a supernova.
24 "Turnabout Intruder" June 3 5928.5 Kirk becomes trapped in the body of a woman bent on killing him and taking over his command under his guise.

Episodes never produced

  1. "He Walked Among Us" (by Norman Spinrad & Gene L. Coon; 1st draft: 25 Sep 67)
  2. "Tomorrow the Universe" (by: Paul Schneider; 1st draft: 03 Mar 67)
  3. "The Stars of Sargasso"
  4. "The Joy Machine" (by Theodore Sturgeon. This script was later novellised in 1996 by sci-fi author James Gunn

See also

External links