This is a list of Star Trek: The Original Series episodes. 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.
Episode ordering
The episodes are listed in order of production number. This is the "official" order of the episodes, used by the 1989 and 1997 official Paramount VHS releases, and the 2004 DVD release.
Some Star Trek fans prefer to order the episode by original air date, as this is the order in which they were originally viewed. One fault of this ordering is that the second pilot, "Where No Man Has Gone Before", has a slightly different cast from other episodes.
The list could also be ordered by the stardates of each episode, which would be the chronological order of the show. Some episodes do not give stardates, so their positions would have to be extrapolated based on several factors including their production numbers. The placement of these episodes could be done differently depending on how the factors are weighed.
Episodes
Original pilot
The original pilot for Star Trek was never aired during series' run.
| Prod. # | Title | Airdate | Stardate | Overview |
|---|---|---|---|---|
| 1/99 | "The Cage" | October 15, 1988 (TNG era special) |
Unknown | Captain Christopher Pike and his crew are lured to the planet Talos IV by a race of intelligent beings capable of creating powerful illusions. |
Season 1 (1966-1967)
| Prod. # | Title | Airdate | Stardate | Overview |
|---|---|---|---|---|
| 2 | "Where No Man Has Gone Before" | September 22 | 1312.4–1313.8 | The Enterprise journeys to the edge of the galaxy, where two crew members develop dangerous psychic powers. |
| 3 | "The Corbomite Maneuver" | November 10 | 1512.2–1514.1 | The Enterprise initially encounters a cube-shaped probe in space; further investigation reveals the probe's source (a massive starship with an unusual pilot). |
| 4 | "Mudd's Women" | October 13 | 1329.1–1330.1 | The Enterprise picks up a traveling con man and his "beautiful" female cargo; the females seem to have a strange effect on the male crew. |
| 5 | "The Enemy Within" | October 6 | 1672.1–1673.5 | A transporter mishap creates Captain Kirk's evil twin. |
| 6 | "The Man Trap" | September 8 | 1513.1–1513.8 | A shape shifting, salt hungry creature, terrorizes the crew of the Enterprise. |
| 7 | "The Naked Time" | September 29 | 1704.2–1704.4 | A strange virus infects the crew of the Enterprise, causing them to behave as if they were intoxicated with alcohol. |
| 8 | "Charlie X" | September 15 | 1533.6–1535.8 | The Enterprise picks up an unstable teenage boy with dangerous mental powers. |
| 9 | "Balance of Terror" | December 15 | 1709.2–1709.6 | The crew of the Enterprise confronts a hostile, space-faring race (called the Romulans), in a test of power. |
| 10 | "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. |
| 11 | "Dagger of the Mind " | November 3 | 2715.1–2715.2 | The Enterprise visits a prison planet where a new treatment for the criminally insane (a machine that affects their mind and memories) has deadly results. |
| 12 | "Miri" | October 27 | 2713.5–2717.3 | The Enterprise discovers an exact duplicate of Earth, where the only survivors of a deadly plague are the planet's prepubescent children. |
| 13 | "The Conscience of the King" | December 8 | 2817.6–2819.8 | Captain Kirk encounters a traveling company of actors, one of whom may have once been a murderous dictator. |
| 14 | "The Galileo Seven" | January 5 | 2821.5–2823.1 | Mr. Spock commands a team aboard an Enterprise shuttlecraft on the surface of an unexplored planet with aggressive humanoid creatures. |
| 15 | "Court Martial" | February 2 | 2947.3–2950.1 | Captain Kirk stands trial on charges of negligence; the Enterprise computer is the main witness against him. |
| 16 | "The Menagerie" part 1 | November 17 | 3012.4–3012.6 | Spock violates Federation orders by helping his former Captain, Christopher Pike, return to Talos IV. |
| 16 | "The Menagerie" part 2 | November 24 | 3013.1–3013.2 | Spock is put on trial for helping his former Captain, Christopher Pike, return to Talos IV. |
| 17 | "Shore Leave" | December 29 | 3025.3–3025.8 | The crew of the Enterprise visits a bizarre planet of dangerous illusions. |
| 18 | "The Squire of Gothos" | January 12 | 2124.5–2126.3 | A powerful being torments the crew of the Enterprise. |
| 19 | "Arena" | January 19 | 3045.6–3046.2 | Captain Kirk fights in a bare-handed duel with the lizard-like, alien captain of another ship. |
| 20 | "The Alternative Factor" | March 23 | 3087.6–3088.7 | The crew of the Enterprise encounters a madman with the ability to jump from our (matter) universe to our opposite (anti-matter) universe. |
| 21 | "Tomorrow is Yesterday" | January 26 | 3113.2–3114.1 | The crew of the Enterprise travels back to 1960's Earth, and must correct damage they caused to the timeline. |
| 22 | "The Return of the Archons" | February 9 | 3156.2–3158.7 | The crew of the Enterprise encounters a world with a dysfunctional society controlled by an unseen leader. |
| 23 | "A Taste of Armageddon" | February 23 | 3192.1–3193.0 | The crew of the Enterprise visits a planet whose people fight a strange, computerized war with a neighboring enemy planet. |
| 24 | "Space Seed" | February 16 | 3141.9–3143.3 | The crew of the Enterprise unintentionally awakens a powerful dictator from Earth's dreadful past. |
| 25 | "This Side of Paradise" | March 2 | 3417.3–3417.7 | The Enterprise visits a planet, where the inhabitants are kept in check by the spores of some strange plant life. |
| 26 | "The Devil in the Dark" | March 9 | 3196.1 | Captain Kirk faces off with a deadly subterranean creature. |
| 27 | "Errand of Mercy" | March 16 | 3198.4–3201.7 | In a state of war with the Klingons, Kirk and Spock attempt to sway the primitive and incomprehensibly placid population of a planet to their side. |
| 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 Earth history in the early 20th Century. |
| 29 | "Operation: Annihilate!" | April 13 | 3287.2–3289.8 | The crew of the Enterprise encounter neurologically parasitic creatures that have taken over a Federation colony. |
Season 2 (1967-1968)
| # | Title | Airdate | Stardate | Overview |
|---|---|---|---|---|
| 30 | "Catspaw" | October 27 | 3018.2 | Two powerful aliens threaten the well being of the Enterprise and her crew. |
| 31 | "Metamorphosis" | November 10 | 3219.4–3220.3 | A shuttle crew from the Enterprise encounters a castaway and his mysterious alien companion. |
| 32 | "Friday's Child" | December 1 | 3497.2–3499.1 | The crew of the Enterprise become entangled in a planet's tribal power struggle. |
| 33 | "Who Mourns for Adonais?" | September 22 | 3468.1 | The crew of the Enterprise are held captive by an alien who claims to be the Greek god Apollo. |
| 34 | "Amok Time" | September 15 | 3372.7 | Mr. Spock returns to his homeworld for a brutal Vulcan marriage ritual. |
| 35 | "The Doomsday Machine" | October 20 | 4202.9 | The Enterprise plays a deadly game of cat-and-mouse with an alien planet killing machine that travels in space from star to star. |
| 36 | "Wolf in the Fold" | December 22 | 3614.9–3615.4 | A series of bizarre murders points to Mr. Scott as the primary suspect. |
| 37 | "The Changeling" | September 29 | 3451.9 | The crew of the Enterprise deals with an indestructible planet destroying space probe. |
| 38 | "The Apple" | October 13 | 3715.0–3715.6 | The crew of the Enterprise visits a mysterious paradise planet which they discover is controlled by a computer. |
| 39 | "Mirror, Mirror" | October 6 | Unknown | A transporter mishap slips Captain Kirk and his companions into a parallel universe (and their counter-parts into our universe). |
| 40 | "The Deadly Years" | December 8 | 3478.2–3579.4 | Strange radiation exposes the command crew of the Enterprise to the effects of rapid aging. |
| 41 | "I, Mudd" | November 3 | 4513.3 | Captain Kirk and the crew has a second run in with the con man, Harry Mudd, and his army of androids. |
| 42 | "The Trouble With Tribbles" | December 29 | 4523.3–4525.6 | Little, fuzzy critters invade and over-populate a Federation star base--and expose an enemy's plans. |
| 43 | "Bread and Circuses" | March 15 | 4040.7–4041.7 | Captain Kirk and his companions are forced to fight in gladiatorial games on a planet modeled after the Roman Empire. |
| 44 | "Journey to Babel" | November 17 | 3842.3–3843.4 | While the Enterprise is transporting dignitaries to an important peace conference, an assassin is discovered. |
| 45 | "A Private Little War" | February 2 | 4211.4–4211.8 | Captain Kirk must decide how to save a primitive people from the technological interference of the Klingons. |
| 46 | "The Gamesters of Triskelion" | January 5 | 3211.7–3259.2 | Captain Kirk and his companions are sent to fight as gladiators for the gambling entertainment of three disembodied beings. |
| 47 | "Obsession" | December 15 | 3619.2–3620.7 | Captain Kirk becomes obsessed with destroying a murderous entity that he has previously encountered. |
| 48 | "The Immunity Syndrome" | January 19 | 4307.1–4309.4 | The crew of the Enterprise encounters an energy-draining space creature. |
| 49 | "A Piece of the Action" | January 12 | 4598.0 | The Enterprise visits a planet with an Earth-like, violent, 1920's, gangster culture. |
| 50 | "By Any Other Name" | February 23 | 4657.5–4658.9 | Beings from another galaxy steal the Enterprise, technically modify it, and attempt to return home. |
| 51 | "Return to Tomorrow" | February 9 | 4768.3–4770.3 | Telepathic aliens take control of Kirk and Spock's bodies with the intention to build new, mechanized bodies for themselves. |
| 52 | "Patterns of Force" | February 16 | Unknown | The crew of the Enterprise visits a planet dominated by a Nazi culture and at war with its planetary neighbor. |
| 53 | "The Ultimate Computer" | March 8 | 4729.4–4731.3 | A new battle computer being tested on board the Enterprise (with the intention of eventually replacing most of the human crew), instead causes havoc. |
| 54 | "The Omega Glory" | March 1 | Unknown | Captain Kirk must battle a deadly virus and prevent a meaningless intertribal war. |
| 55 | "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 |
|---|---|---|---|---|
| 56 | "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. |
| 57 | "Elaan of Troyius" | December 20 | 4372.5 | Captain Kirk hosts a spoiled princess, who must bring peace to a star system at war. |
| 58 | "The Paradise Syndrome" | October 4 | 4842.6 | A mysterious alien device on a planet with a predominantly American Indian culture erases Captain Kirk's memory, and he begins a life with them as a member of their tribe. |
| 59 | "The Enterprise Incident" | September 27 | 5027.3–5027.4 | The crew of the Enterprise attempts to steal a Romulan cloaking device. |
| 60 | "And the Children Shall Lead" | October 11 | 5029.5–5025.3 | The crew of the Enterprise rescues a group of children stranded on a planet, along with their evil "imaginary" friend. |
| 61 | "Spock's Brain" | September 20 | 5431.4–5432.3 | Captain Kirk pursues aliens who have stolen Spock's brain. |
| 62 | "Is There in Truth No Beauty?" | October 18 | 5630.7–5630.8 | The Enterprise travels with an alien ambassador who must travel inside a special black case because his appearance causes insanity. |
| 63 | "The Empath" | December 6 | 5121.0 | While visiting a doomed planet, the landing party is subject to torturous experiments to test an empathic race. |
| 64 | "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. |
| 65 | "For the World is Hollow and I Have Touched the Sky" | November 8 | 5476.3–5476.4 | The crew of the Enterprise rush to stop an asteroid from colliding with a Federation world, but discover that the inside of the asteroid is inhabited. |
| 66 | "Day of the Dove" | November 1 | Unknown | An alien energy-based life form drives the crew of the Enterprise into brutal conflict with the Klingons. |
| 67 | "Plato's Stepchildren" | November 22 | 5784.2–5784.3 | The crew of the Enterprise encounters an ageless and mischievous race of psychic humanoids who claim to have organized their society around Ancient Greek ideals. |
| 68 | "Wink of an Eye" | November 29 | 5710.5–5710.9 | Invisible "time-accelerated" aliens take over the Enterprise and attempt to abduct the crew for use as "genetic stock". |
| 69 | "That Which Survives" | January 24 | Unknown | The crew of the Enterprise visits an abandoned outpost guarded by a mysterious computer. |
| 70 | "Let That Be Your Last Battlefield" | January 10 | 5730.2–5730.7 | The Enterprise picks up the last two survivors of a war torn planet who are still committed to destroy each other aboard the ship. |
| 71 | "Whom Gods Destroy" | January 3 | 5718.3 | Kirk visits a mental health facility and confronts an insane starship captain who believes he is destined to control the universe. |
| 72 | "The Mark of Gideon" | January 17 | 5423.4–5423.8 | A race of overpopulated aliens abduct Kirk to solve their problem. |
| 73 | "The Lights of Zetar" | January 31 | 5725.3–5725.6 | Strange, energy-based alien life forms threaten the Memory Alpha station and the Enterprise crew. |
| 74 | "The Cloud Minders" | February 28 | 5818.4–5819.3 | Kirk races against time to acquire plague-fighting minerals from a world in the midst of a civil uprising. |
| 75 | "The Way to Eden" | February 21 | 5832.3–5832.6 | The Enterprise is hijacked by a criminal doctor and his loyal, hippy-like followers who are attempting to find paradise. |
| 76 | "Requiem for Methuselah" | February 14 | 5843.7–5843.8 | The crew of the Enterprise encounters an immortal human who lives as a recluse on his own planet. |
| 77 | "The Savage Curtain" | March 7 | 5906.4–5906.5 | Aliens force Kirk and Spock to battle illusionary villains in a test of good versus evil. |
| 78 | "All Our Yesterdays" | March 14 | 5943.7–5943.9 | Kirk, Spock, and McCoy are trapped in the past on a world threatened by a supernova. |
| 79 | "Turnabout Intruder" | June 3 | 5928.5–5930.3 | Kirk's consciousness becomes trapped in the body of a woman bent on killing him and taking over his command while inhabiting his body. |
Unproduced
- "Rock-A-Bye Baby--Or Die!" (by George Clayton Johnson)
- "He Walked Among Us" (by Norman Spinrad & Gene L. Coon; 1st draft: 25 September 1967)
- "The Shadow of Space" (by Philip José Farmer; 1st draft: 1966)
- "Sketches Among The Ruins of My Mind" (by Philip José Farmer)
- "Tomorrow the Universe" (by: Paul Schneider; 1st draft: 3 March 1967)
- "The Stars of Sargasso" (by D.C. Fontana; 1st draft: 1969)
- "The Joy Machine" (by Theodore Sturgeon). This script was later novellised in 1996 by sci-fi author James Gunn
- "Joanna" (by D.C. Fontana)
- "The Godhead" (by John Meredyth Lucas)
- "The Lost Star" (by John Meredyth Lucas)
- "Shol" (by Darlene Hartman)
- "Perchance To Dream" (by J.M. Winston)
- "Tomorrow Was Yesterday" (by David Gerrold). This script was novellised in 1980 under the title The Galactic Whirlpool.