Space. The Final Frontier. The U.S.S. Enterprise embarks on a five year mission to explore the galaxy. The Enterprise is under the command of Captain James T. Kirk with First Officer Mr. Spock, from the planet Vulcan. With a determined crew, the Enterprise encounters Klingons, Romulans, time paradoxes, tribbles and genetic supermen led by Khan Noonian Singh. Their mission is to explore strange new worlds, to seek new life and new civilizations, and to boldly go where no man has gone before.
Spock's Brain (Episode 1) 5.9
Writer: Gene L. Coon
Air date: 1968-09-20
Runtime: 51 min
Overview: An alien female beams aboard the ship and, after incapacitating the rest of the crew, surgically removes Spock's brain. Kirk and the crew have just hours to locate and replace it before Spock's body dies.
The Enterprise Incident (Episode 2) 7.7
Writer: D.C. Fontana
Air date: 1968-09-27
Runtime: 51 min
Overview: The crew of the Enterprise are on a secret mission to steal a Romulan cloaking device.
The Paradise Syndrome (Episode 3) 6.6
Writer: Margaret Armen
Air date: 1968-10-04
Runtime: 51 min
Overview: An alien device on a primitive planet erases Captain Kirk's memory, and he begins a new life with the planet's indigenous people.
And the Children Shall Lead (Episode 4) 5.5
Writer: Edward J. Lakso
Air date: 1968-10-11
Runtime: 51 min
Overview: On a distant planet, Kirk, Spock and McCoy find a scientific team dead, and their children who, unknown to the crew, have great powers at their disposal.
Is There in Truth No Beauty? (Episode 5) 7.1
Writer: Jean Lisette Aroeste
Air date: 1968-10-18
Runtime: 51 min
Overview: The Enterprise travels with an alien ambassador whose appearance induces madness.
Spectre of the Gun (Episode 6) 6.8
Writer: Gene L. Coon
Air date: 1968-10-25
Runtime: 51 min
Overview: Having been found trespassers into Melkotian space, Captain Kirk and his companions are sent to die in a re-enactment of the gunfight at the O.K. Corral.
Day of the Dove (Episode 7) 7.4
Writer: Jerome Bixby
Air date: 1968-11-01
Runtime: 51 min
Overview: An alien force drives the crew of the Enterprise into brutal conflict with the Klingons.
For the World Is Hollow and I Have Touched the Sky (Episode 8) 7.0
Writer: Rik Vollaerts
Air date: 1968-11-08
Runtime: 51 min
Overview: The crew of the Enterprise rush to stop an asteroid from colliding with a Federation world, but discover the asteroid is actually an inhabited generation ship.
The Tholian Web (Episode 9) 7.4
Writer: Judy Burns
Air date: 1968-11-15
Runtime: 50 min
Overview: Captain Kirk is caught between dimensions while the crew of the Enterprise works to retrieve him. All the while, the Tholians demand that the Enterprise leave their space.
Plato's Stepchildren (Episode 10) 6.9
Writer: Meyer Dolinsky
Air date: 1968-11-22
Runtime: 51 min
Overview: The crew of the Enterprise encounters an ageless and sadistic race of humanoids with the power of telekinesis and who claim to have organized their society around Ancient Greek ideals.
Wink of an Eye (Episode 11) 7.4
Writer: Gene L. Coon
Air date: 1968-11-29
Runtime: 51 min
Overview: Invisible "time-accelerated" aliens take over the Enterprise and attempt to abduct the crew for use as "genetic stock".
The Empath (Episode 12) 6.3
Writer: Joyce Muskat
Air date: 1968-12-06
Runtime: 51 min
Overview: While visiting a doomed planet, the landing party is subject to torturous experiments by powerful aliens.
Elaan of Troyius (Episode 13) 6.7
Writer: John Meredyth Lucas
Air date: 1968-12-20
Runtime: 51 min
Overview: The USS Enterprise ferries a spoiled princess whose betrothal to a royal Troyian is hoped will bring peace to a star system at war.
Whom Gods Destroy (Episode 14) 6.9
Writer: Jerry Sohl
Air date: 1969-01-03
Runtime: 51 min
Overview: Captain Kirk faces off with a demented shape-shifting starship captain determined to control the universe.
Let That Be Your Last Battlefield (Episode 15) 7.2
Writer: Gene L. Coon
Air date: 1969-01-10
Runtime: 51 min
Overview: The Enterprise encounters two duo-chromatic and mutually belligerent aliens who put the ship in the middle of their old conflict.
The Mark of Gideon (Episode 16) 6.6
Writer: Stanley Adams
Air date: 1969-01-17
Runtime: 51 min
Overview: A race of overpopulated aliens abduct Captain Kirk to solve their problem.
That Which Survives (Episode 17) 6.6
Writer: D.C. Fontana
Air date: 1969-01-24
Runtime: 51 min
Overview: Kirk, McCoy, and Sulu are stranded on a barren planet where a mysterious woman attempts to kill them one at a time, while the Enterprise must travel halfway across the galaxy to rescue them.
The Lights of Zetar (Episode 18) 6.5
Writer: Shari Lewis
Air date: 1969-01-31
Runtime: 51 min
Overview: Strange incorporeal aliens threaten the Memory Alpha station and the Enterprise.
Requiem for Methuselah (Episode 19) 6.9
Writer: Jerome Bixby
Air date: 1969-02-14
Runtime: 51 min
Overview: The crew of the Enterprise encounter an immortal human in this science fiction variation on Shakespeare's The Tempest.
The Way to Eden (Episode 20) 5.9
Writer: D.C. Fontana
Air date: 1969-02-21
Runtime: 51 min
Overview: The Enterprise picks up a group of space "hippies" looking for Eden.
The Cloud Minders (Episode 21) 7.0
Writer: Oliver Crawford
Air date: 1969-02-28
Runtime: 51 min
Overview: Captain Kirk races against time to acquire plague-fighting minerals from a world in the midst of a civil uprising against a grievous social class disparity.
The Savage Curtain (Episode 22) 6.6
Writer: Gene Roddenberry
Air date: 1969-03-07
Runtime: 51 min
Overview: Aliens force Captain Kirk and First Officer Spock to join forces with "Abraham Lincoln" and "Surak" to battle villains in a contest of good vs. evil.
All Our Yesterdays (Episode 23) 7.6
Writer: Jean Lisette Aroeste
Air date: 1969-03-14
Runtime: 51 min
Overview: Kirk, Spock and McCoy are trapped in two parts of another planet's past - a world threatened with destruction when its sun goes supernova.
Turnabout Intruder (Episode 24) 7.0
Writer: Gene Roddenberry
Air date: 1969-06-03
Runtime: 51 min
Overview: The Enterprise is in danger when Janice Lester, one of Kirk's former lovers, steals his body.
