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 lead 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.
Where to Watch Star Trek
Below you'll find every episode from all 3 season of Star Trek.
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Season 3Amazon Prime | CBS | CBS All Access | Hulu | Netflix | Rent or Buy
S03 E01Sep 21, 1968
Spock's Brain 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.
S03 E02Sep 28, 1968
The Enterprise Incident The crew of the Enterprise are on a secret mission to steal a Romulan cloaking device.
S03 E03Oct 5, 1968
The Paradise Syndrome An alien device on a primitive planet erases Captain Kirk's memory, and he begins a new life with the planet's indigenous people.
S03 E04Oct 12, 1968
And the Children Shall Lead 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.
S03 E05Oct 19, 1968
Is There in Truth No Beauty? The Enterprise travels with an alien ambassador whose appearance induces madness.
S03 E06Oct 26, 1968
Spectre of the Gun 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.
Season 2Amazon Prime | CBS | CBS All Access | Hulu | Netflix | Rent or Buy
S02 E01Sep 16, 1967
Amok Time First Officer Spock returns to his home world for a brutal Vulcan mating ritual.
S02 E02Sep 23, 1967
Who Mourns for Adonais? The crew of the Enterprise are held captive by an alien who turns out to be the Greek god Apollo.
S02 E03Sep 30, 1967
The Changeling The crew of the USS Enterprise deals with an indestructible planet-destroying space probe.
S02 E04Oct 7, 1967
Mirror, Mirror A transporter mishap swaps Captain Kirk and his companions with their evil counterparts in a parallel universe. In the so-called Mirror Universe, the Enterprise is a ship of the Terran Empire, an organization as evil as the United Federation of Planets is benevolent.
S02 E05Oct 14, 1967
The Apple The crew of the Enterprise visits a mysterious paradisical planet controlled by a computer that is served by the local inhabitants.
S02 E06Oct 21, 1967
The Doomsday Machine The starship Enterprise and its heavily-damaged sister ship, the USS Constellation, must work together to stop an alien planet-killing machine headed for the heart of Federation territory.
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