Season Three Episode Guide

Spock's Brain

Episode #: 301
Air Date: 09.20.68
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An alien invader steals Spock's brain to operate her civilization's central control system, and the crew must locate it and find a way to return it to his body before Spock dies.

The Enterprise Incident

Episode #: 302
Air Date: 09.27.68
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Captain Kirk takes the ship on a dangerous, secret mission into Romulan space, in an attempt to acquire a cloaking device. Spock's loyalties are tested by a beautiful Romulan commander.

The Paradise Syndrome

Episode #: 303
Air Date: 10.04.68
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Kirk is stranded on a primitive world when an alien device strikes him with amnesia. As the captain falls in love and becomes a part of the natives' world, the Enterprise searches for a way to save the planet from an asteroid collision.

And the Children Shall Lead

Episode #: 304
Air Date: 10.11.68
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The Enterprise finds a group of children who have survived a mass-suicide, with help from a powerful alien entity -- who leads them in taking over the ship to find a new planet for him to control.

Is There In Truth No Beauty?

Episode #: 305
Air Date: 10.18.68
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The Enterprise hosts a Medusan ambassador, whose physical appearance causes madness in humans. But when a distraught scientist maroons the ship beyond our galaxy, Spock must mind-meld with the alien to find the way home.

Spectre of the Gun

Episode #: 306
Air Date: 10.25.68

After trespassing into Melkotian space, Kirk and four of the crew find themselves in an alien-created reinactment of the deadly battle at the OK Corral.

Day of the Dove

Episode #: 307
Air Date: 11.01.68
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Captain Kirk is forced to bring a group of angry Klingons on board, which quickly escalates into a battle for control of the ship -- with both groups being manipulated by a malevolent alien entity.

For the World Is Hollow and I Have Touched the Sky

Episode #: 308
Air Date: 11.08.68

The crew rushes to save from destruction a civilization made inside an asteroid, as Dr. McCoy faces a terminal illness with no known cure.

The Tholian Web

Episode #: 309
Air Date: 11.15.68
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The Enterprise investigates a starship that is phasing out of existence, and Captain Kirk is lost. A pair of Tholian ships attack as a mysterious illness threatens to drive the crew insane.

Plato's Stepchildren

Episode #: 310
Air Date: 11.22.68
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A group of super-powerful aliens take control of the crew for their own amusement. Kirk and the others must discover the source of their amazing powers if they are to counter them.

Wink of An Eye

Episode #: 311
Air Date: 11.29.68
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An alien species attempts to use the Enterprise crew to save their dying race, drawing Captain Kirk into their own rapidly-accelerated state of existence.

The Empath

Episode #: 312
Air Date: 12.06.68

Kirk, Spock and McCoy are captured and brought to an alien laboratory, where they are tortured one-by-one in order to test a beautiful, empathic healer's capacity for self-sacrifice.

Elaan of Troyius

Episode #: 313
Air Date: 12.13.68
Our Rating:

When the Enterprise ferries a reluctant bride to her wedding with the leader of a warring planet, Kirk attempts to educate her in the ways of her new culture. But a Klingon attack threatens the peace her marriage would bring.

Whom Gods Destroy

Episode #: 314
Air Date: 01.03.69
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Kirk and Spock deliver a new medicine to a subterranean prison for the criminally insane, only to find out that one of the prisoners -- once a starship captain -- has taken over.

Let That Be Your Last Battlefield

Episode #: 315
Air Date: 01.10.69

Two alien men come on board the Enterprise, bringing their war of racial bigotry with them. Kirk tries to mediate the conflict, but his patience runs out when one of them attempts to seize control of the ship.

The Mark of Gideon

Episode #: 316
Air Date: 01.17.69
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While on a diplomatic mission to a world free of disease -- but plagued by over-population -- Kirk finds himself alone with a woman on a precise replica of the Enterprise.

That Which Survives

Episode #: 317
Air Date: 01.24.69

Kirk and his crew must defend the ship -- and their very lives -- from the touch of a mysterious woman bent on their destruction.

The Lights of Zetar

Episode #: 318
Air Date: 01.31.69
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The Federation's central library facility is wiped out by non-corporeal entities, who seek out the Enterprise and take the body of a young lieutenant as a host.

Requiem For Methuselah

Episode #: 319
Air Date: 02.14.69

The crew is infected with a deadly plague, and seek the antidote from a world inhabited solely by an enchanting woman and a man straight out of Earth's history.

The Way to Eden

Episode #: 320
Air Date: 02.21.69

The Enterprise pursues a vessel stolen by a group searching for a mythical paradise world, and bring them aboard when their ship is destroyed.

The Cloud Minders

Episode #: 321
Air Date: 02.28.69

Seeking the cure to a planet-wide plague, Captain Kirk and his crew find themselves in the middle of a conflict between the miners of Ardana and the ruling class, who live in a city in the clouds.

The Savage Curtain

Episode #: 322
Air Date: 03.07.69
Our Rating:

An alien creature locks the Enterprise crew in combat with history's most notorious villains in a test of good versus evil, conjuring great heroes from the past to fight along side them.

All Our Yesterdays

Episode #: 323
Air Date: 03.14.69

The Enterprise discovers a massive library on a deserted world where the sun is about to go nova, and Kirk, Spock and McCoy are accidentally sent into dangerous periods in the planet's history.

Turnabout Intruder

Episode #: 324
Air Date: 06.03.69

Kirk's jealous former lover secretly exchanges bodies with the captain, allowing her to finally command a starship -- and trapping him in her radiation-stricken body.