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Classic Era:

Five-Year Mission (1966-1969, 1973-1974)

The original series, created by Gene Roddenberry, lasted three seasons (1966-1969), although it was almost cancelled at the end of its second season and was reportedly saved only through a letter-writing campaign. But the show, with 79 episodes, became a hit in syndicated re-runs.

While many elements of the Enterprise were present from the start, the series only slowly built its universe, as required for its episodic stories. The first season established the United Federation of Planets, Starfleet, Starfleet Command, Starbases, and the idea that there were twelve ships like the Enterprise in service. Chekov was added for the second season, which expanded on Spock’s heritage. While episodic, a few episodes did make reference to past adventures. Exactly when the show was set remained vague throughout, with contradictory references to Earth’s past, because Gene Roddenberry preferred to leave the setting vague.

On a number of occasions, the series used its outer-space setting to reflect issues of the time, especially the Cold War. The series also frequently featured humor, an element later series lacked, and episodes often ended with a joke or with laughter, cementing the core characters’ camaraderie.

After four seasons off the air, the show returned in 1973 as a half-hour, animated series, produced by Filmation. All of the principal characters returned, voiced by their original actors, except Chekov. The series made relatively mild changes to the Enterprise’s technology and crew, but it remained in tone with the original series — with the exception of a prohibition against killing crew members, which occurred only in a single animated episode. The series also used the medium of animation to produce more elaborate alien landscapes and non-human-looking characters than were present on the original, live-action series.

Animated shows at the time rarely had long lives. The first season won an Emmy Award, which was reportedly the only reason it was renewed for an abridged second season. In total, 22 episodes were produced.

Although the animated series was regarded as non-canonical for years afterward, a view advanced by Roddenberry, it introduced several elements that remained as part of the Star Trek canon and were referenced by later productions. The show’s voice actors and writers, however, largely regarded it as effectively constituting a fourth season of the original show.

In the listings below, episodes from the original series are listed in stardate order, rather than airdate order (although their issue numbers reflect the original airdate order). This order seems to make slightly more sense, and it has the advantage of placing Chekov on board during “Space Seed” (fixing an apparent continuity error in Star Trek II: The Wrath of Khan). However, the animated episodes are listed afterwards, since they feature a slightly different crew and ship, both of which are incompatible with the original series and which must therefore take place later, reflecting the original intent of continuing the original series.

The Original Series

Star Trek #3

“Where No Man Has Gone Before” -- 55 minutes

stardate: 1312.4
Star Trek #6

“Mudd’s Women”

stardate: 1329.8; aired 13 Oct 1966
Star Trek #10

“The Corbomite Maneuver”

stardate: 1512.2; aired 10 Nov 1966
Star Trek #1

“The Man Trap”

first season debut; stardate: 1513.1; aired 8 Sept 1966
Star Trek #2

“Charlie X”

stardate: 1533.6; aired 15 Sept 1966
Star Trek #5

“The Enemy Within”

stardate: 1672.1; aired 6 Oct 1966
Star Trek #4

“The Naked Time”

stardate: 1704.2; aired 29 Sept 1966
Star Trek #14

“Balance of Terror”

stardate: 1709.2; introduces the Romulans; aired 15 Dec 1966
Star Trek #17

“The Squire of Gothos”

stardate: 2124.5; aired 12 Jan 1967
Star Trek #7

“What are Little Girls Made of?”

stardate: 2712.4; aired 20 Oct 1966
Star Trek #8


stardate: 2713.5; aired 27 Oct 1977
Star Trek #9

“Dagger of the Mind”

stardate: 2715.1; aired 3 Nov 1966
Star Trek #13

“The Conscience of the King”

stardate: 2817.6; aired 8 Dec 1966
Star Trek #16

“The Galileo Seven”

stardate: 2821.5; aired 5 Jan 1967
Star Trek #20

“Court Martial”

stardate: 2947.3; contains the first mention of Starfleet, Starfleet Command, and Starbases; several ships are shown undergoing repairs at Starbase 11, including the (Constitution-class) Lexington (NCC-1709), Hood (NCC-1703), Exeter (NCC-1672), and Excalibur (NCC-1664); aired 2 Feb 1967
Star Trek #11

“The Menagerie, Part I”

stardate: 3012.4; aired 17 Nov 1966
Star Trek #12

“The Menagerie, Part II”

stardate: 3013.1; aired 24 Nov 1966
Star Trek #36


stardate: 3018.2; occurs earlier than any other second-season episode; features Chekov, chronologically his earliest appearance (based on stardate, although this was indeed the first episode shot with Chekov); aired 27 Oct 1967
Star Trek #15

“Shore Leave”

stardate: 3025.3; aired 29 Dec 1966
Star Trek #18


stardate: 3045.6; aired 19 Jan 1967
Star Trek #27

“The Alternative Factor”

stardate: 3087.6; aired 30 Mar 1967
Star Trek #19

“Tomorrow is Yesterday”

stardate: 3113.2; Kirk says there are 12 (Constitution-class) ships like the Enterprise (including the Enterprise); aired 26 Jan 1967
Star Trek #28

“The City on the Edge of Forever”

stardate: 3134.0; won a Hugo award; aired 6 Apr 1967
Star Trek #22

“Space Seed”

stardate: 3141.9; introduces Khan Noonien Singh; aired 16 Feb 1967
Star Trek #21

“The Return of the Archons”

stardate: 3156.2; aired 9 Feb 1967
Star Trek #23

“A Taste of Armageddon”

stardate: 3192.1; aired 23 Feb 1967
Star Trek #25

“Devil in the Dark”

stardate: 3196.1; aired 9 Mar 1967
Star Trek #26

“Errand of Mercy”

stardate: 3198.4; first appearance of the Klingons; aired 23 Mar 1967
Star Trek #45

“The Gamesters of Triskelion”

stardate: 3211.7; one of three second-season episodes that occurs before “Amok Time”; aired 5 Jan 1968
Star Trek #38


stardate: 3219.4; features Zefram Cochrane; one of three second-season episodes that occurs before “Amok Time”; aired 10 Nov 1967
Star Trek #29

“Operation: Annihilate!”

first season finale; stardate: 3287.2; aired 13 Apr 1967
Star Trek #30

“Amok Time”

first appearance (by airdate) of Pavel Chekov; first appearance of the planet Vulcan; second season debut; stardate: 3372.7; aired 15 Sept 1967
Star Trek #24

“This Side of Paradise”

stardate: 3417.3; only first-season episode to occur after “Amok Time”; aired 2 Mar 1967
Star Trek #31

“Who Mourns for Adonais?”

stardate: 3468.1; aired 22 Sept 1967
Star Trek #41

“The Deadly Years”

stardate: 3478.2; aired 8 Dec 1967
Star Trek #40

“Friday’s Child”

stardate: 3497.2; aired 1 Dec 1967
Star Trek #32

“The Changeling”

stardate: 3541.9; features a plot similar to Star Trek: The Motion Picture; aired 29 Sept 1967
Star Trek #43

“Wolf in the Fold”

stardate: 3614.9; aired 22 Dec 1967
Star Trek #42


stardate: 3619.2; aired 15 Dec 1967
Star Trek #34

“The Apple”

stardate: 3715.3; aired 13 Oct 1967
Star Trek #33

“Mirror, Mirror”

first appearance of the Mirror Universe; although aired one week before “The Apple,” was produced after that episode; aired 6 Oct 1967
Star Trek #39

“Journey to Babel”

stardate: 3842.3; introduces Spock’s parents, Sarek and Amanda; aired 17 Nov 1967
Star Trek #35

“The Doomsday Machine”

stardate: 4202.9; the (Constitution-class) Constellation is destroyed and its crew (including Matt Decker) is killed; aired 20 Oct 1967
Star Trek #48

“A Private Little War”

stardate: 4211.4; aired 2 Feb 1968
Star Trek #47

“The Immunity Syndrome”

stardate: 4307.1; the (Constitution-class) Intrepid (manned almost entirely by Vulcans) is destroyed along with its entire crew; aired 19 Jan 1968
Star Trek #68

“Elaan of Troyius”

stardate: 4372.5; one of two third-season episodes that occur during the second season; aired 20 Dec 1968
Star Trek #61

“Spectre of the Gun”

stardate: 4385.3; one of two third-season episodes that occur during the second season; aired 25 Oct 1968
Star Trek #54

“Bread and Circuses”

stardate: 4040.7; aired 15 Mar 1968
Star Trek #37

“I, Mudd”

stardate: 4513.3; Harry Mudd (from “Mudd’s Women”) returns; aired 3 Nov 1967
Star Trek #44

“The Trouble with Tribbles”

stardate: 4523.3; aired 29 Dec 1967
Star Trek #46

“A Piece of the Action”

stardate: 4598.0; aired 12 Jan 1968
Star Trek #51

“By Any Other Name”

stardate: 4657.5; aired 23 Feb 1968
Star Trek #53

“The Ultimate Computer”

stardate: 4729.4; the (Constitution-class) Lexington, Excalibur, Potemkin, and Hood engage the Enterprise in wargames, during which they are severely damaged and the entire crew of the Excalibur is killed; aired 8 Mar 1968
Star Trek #49

“Return to Tomorrow”

stardate: 4768.3; aired 9 Feb 1968
Star Trek #50

“Patterns of Force”

no stardate is given (although many guides reference stardate 2534, which would create a continuity problem, because Spock performs his mind meld in front of McCoy in this episode, yet the first time that occurs is in “Dagger of the Mind,” around stardate 2715.1); produced directly after “Return to Tomorrow”; aired 16 Feb 1968
Star Trek #52

“The Omega Glory”

produced as the penultimate episode of season two; the Enterprise investigates the disappearance (six months prior) of the (Constitution-class) Exeter, which is found intact but abandoned; the Exeter’s captain (Ronald Tracey) is arrested; aired 1 Mar 1968
Star Trek #55

“Assignment: Earth”

second season finale; features Gary Seven; intended to serve as a backdoor pilot for a series (titled Assignment: Earth) starring Gary Seven as a futuristic James Bond-type; aired 29 Mar 1968
Star Trek #58

“The Paradise Syndrome”

stardate: 4842.6; introduces the concept of the Preservers, who seeded the galaxy with humanoid life; aired 4 Oct 1968
Star Trek #57

“The Enterprise Incident”

stardate: 5027.3; aired 27 Sept 1968
Star Trek #59

“And the Children Shall Lead”

stardate: 5029.5; aired 11 Oct 1968
Star Trek #67

“The Empath”

stardate: 5121.5; aired 6 Dec 1968
Star Trek #71

“The Mark of Gideon”

stardate: 5423.4; aired 17 Jan 1969
Star Trek #56

“Spock’s Brain”

stardate: 5431.4; third season debut; aired 20 Sept 1968
Star Trek #63

“For the World is Hollow and I Have Touched the Sky”

stardate: 5476.3; aired 8 Nov 1968
Star Trek #62

“Day of the Dove”

produced directly after “For the World is Hollow and I Have Touched the Sky”; aired 1 Nov 1968
Star Trek #60

“Is There in Truth No Beauty?”

stardate: 5630.7; introduces the Medusans (a non-humanoid species); aired 18 Oct 1968
Star Trek #64

“The Tholian Web”

stardate: 5693.2; introduces the Tholians (a non-humanoid species); the (Constitution-class) Defiant is lost with all hands (later seen in the two-part Enterprise episode “In a Mirror, Darkly”); aired 15 Nov 1968
Star Trek #66

“Wink of an Eye”

stardate: 5710.5; features time-accelerated aliens; aired 29 Nov 1968
Star Trek #69

“Whom Gods Destroy”

stardate: 5718.3; aired 3 Jan 1969
Star Trek #73

“The Lights of Zetar”

stardate: 5725.3; aired 31 Jan 1969
Star Trek #72

“That Which Survives”

produced directly before “Let That Be Your Last Battlefield”; aired 15 Mar 1969
Star Trek #70

“Let That Be Your Last Battlefield”

stardate: 5730.2; aired 10 Jan 1969
Star Trek #65

“Plato’s Stepchildren”

stardate: 5784.2; features the celebrated Kirk-Uhura kiss (although Kirk only does so under mind control and the two actors did not kiss on set); aired 22 Nov 1968
Star Trek #76

“The Cloud Minders”

stardate: 5818.4; aired 28 Feb 1969
Star Trek #75

“The Way to Eden”

stardate: 5832.3; aired 21 Feb 1969
Star Trek #74

“Requiem for Methuselah”

stardate: 5843.7; aired 14 Feb 1969
Star Trek #77

“The Savage Curtain”

stardate: 5906.4; aired 7 Mar 1969
Star Trek #79

“Turnabout Intruder”

third season finale; stardate: 5928.5; aired almost three months after the preceding episode and aired on a Tuesday (instead of the usual Friday slot); the Enterprise is scheduled to rendezvous with the (Constitution-class) Potemkin to conduct gravitational studies of the binary Beta Aurigae system when the events of this episode delay the Enterprise; aired 3 June 1969
Star Trek #78

“All Our Yesterdays”

stardate: 5943.7; aired 14 Mar 1969

The Animated Series

Star Trek animated series #1

“Beyond the Farthest Star”

first season debut; stardate: 5521.3; aired 8 Sept 1973
Star Trek animated series #2


stardate: 5373.4; aired 15 Sept 1973
Star Trek animated series #3

“One of Our Planets is Missing”

stardate: 5371.3; aired 22 Sept 1973
Star Trek animated series #4

“The Lorelei Signal”

stardate: 5483.7; aired 29 Sept 1973
Star Trek animated series #5

“More Tribbles, More Troubles”

stardate: 5392.4; aired 6 Oct 1973
Star Trek animated series #6

“The Survivor”

stardate: 5143.3; aired 13 Oct 1973
Star Trek animated series #7

“The Infinite Vulcan”

stardate: 5554.4; aired 20 Oct 1973
Star Trek animated series #8

“The Magicks of Megas-tu”

stardate: 1254.4; aired 27 Oct 1973
Star Trek animated series #9

“Once Upon a Planet”

stardate: 5591.2; aired 3 Nov 1973
Star Trek animated series #10

“Mudd’s Passion”

Harry Mudd (from “Mudd’s Women” and “I, Mudd”) returns; stardate: 4978.5; aired 10 Nov 1973
Star Trek animated series #11

“The Terratin Incident”

stardate: 5577.3; aired 17 Nov 1973
Star Trek animated series #12

“The Time Trap”

stardate: 5267.2; aired 24 Nov 1973
Star Trek animated series #13

“The Ambergris Element”

stardate: 5499.9; aired 1 Dec 1973
Star Trek animated series #14

“The Slaver Weapon”

stardate: 4187.3; introduces the lost Slaver civilization and its stasis boxes; aired 15 Dec 1973
Star Trek animated series #15

“The Eye of the Beholder”

stardate: 5501.2; aired 5 Jan 1974
Star Trek animated series #16

“The Jihad”

first season finale; stardate: 5683.1; aired 12 Jan 1974
Star Trek animated series #17

“The Pirates of Orion”

second season debut; stardate: 6334.1; Kirk’s captain’s log refers to the (Constitution-class) Potemkin picking up the drug needed to save Spock’s life, then transferring it to a freighter for delivery to Enterprise; aired 7 Sept 1974
Star Trek animated series #18


stardate: 7403.6; reveals that James Kirk’s middle name is Tiberius; aired 14 Sept 1974
Star Trek animated series #19

“The Practical Joker”

stardate: 3183.3; aired 21 Sept 1974
Star Trek animated series #20


stardate: 5275.6; aired 28 Sept 1974
Star Trek animated series #21

“How Sharper than a Serpent’s Truth”

stardate: 6063.4; aired 5 Oct 1974
Star Trek animated series #22

“The Counter-Clock Incident”

stardate: 6770.3; second season finale; introduces Robert April, the first captain of the Enterprise (prior to Christopher Pike); aired 12 Oct 1974
Star Trek: The Animated Series Continuation

“Passage to Moav” -- 17 pages

  • written by Alan Dean Foster

“In Vino Veritas” -- 16 pages

  • written by Alan Dean Foster

“The Crier in Emptiness” -- 12 pages

  • written by Alan Dean Foster

“To Starve a Fleaver” -- 15 pages

  • written by Alan Dean Foster

“The Logistics of Stampede” -- 14 pages

  • written by Alan Dean Foster

“A Mirror for Futility” -- 12 pages

  • written by Alan Dean Foster

this is a hypothetical animated adaptation of the six short Star Trek audio stories produced by Peter Pan Records in 1975-1976 and written by Alan Dean Foster; this entry does not include “The Time Stealer” (the only story of the original seven 1975-1976 Peter Pan stories which was not written by Foster), nor the final four stories produced by Peter Pan in 1979, all of which are of lesser quality

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