3 seasons available

Star Trek: The Original Series

TVPG • Classics, Adventure, Aliens, Drama, Science Fiction, Family, Action • TV Series • 1966

The 23rd century adventures of Captain James T. Kirk and the U.S.S. Enterprise (NCC-1701), a powerful interstellar spacecraft dispatched by Earth-base...more

The 23rd century adventures of Captain James T. Kirk and the U.S.S. Enterprise (NCC-1701), a powerful interstellar spacecraft dispatched by Earth-base...more

Start watching Star Trek: The Original Series

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3 seasons available (79 episodes)

3 seasons available

(79 episodes)

Season123
Episode 1

Spock's Brain

Kirk pursues aliens who have taken Spock's brain.
Episode 2

The Enterprise Incident

Captain Kirk becomes increasingly erratic and orders the Enterprise into Romulan space...where the ship is captured by a beautiful Romulan commander.
Episode 3

The Paradise Syndrome

Kirk loses his memory and begins a life in a native village.
Episode 4

And the Children Shall Lead

A group of children is being controlled by an evil force.
Episode 5

Is There in Truth No Beauty?

Miranda Jones, a telepath who studied mental disciplines on Vulcan, arrives with Ambassador Kolos, a Medusan - an alien life form whose physical form is so hideous, humanoid life forms are driven insane if they look upon him.
Episode 6

Spectre of the Gun

When coming to a xenophobic isolationist planet, Captain Kirk and his landing party are punished for trespassing. They are sentenced to death in a surreal recreation of the Gunfight at the OK Corral with the landing on the losing side.
Episode 7

Day of the Dove

When the Enterprise brings aboard Klingon prisoners, an alien entity pits both sides against each other in an ever-escalating struggle.
Episode 8

For the World Is Hollow and I Have Touched the Sky

At the same time McCoy discovers that he has a year to live, the U.S.S. Enterprise encounters the asteroid Yonada which is determined to be artificially propelled.
Episode 9

The Tholian Web

Kirk is trapped in interphase, while the Enterprise is trapped by a powerful energy web.
Episode 10

Plato's Stepchildren

Platonians use psychokinetic power to toy with the crew.
Episode 11

Wink of an Eye

Hyper-accelerated aliens, invisible to the naked eye, take over the Enterprise.
Episode 12

The Empath

On a planet doomed to destruction, Kirk, Spock and McCoy become involved with two aliens who use them as laboratory animals in a bizarre series of tests on an alien empath who may be the savior of her planet.
Episode 13

Elaan of Troyius

The Enterprise must escort an alien princess to her marriage to seal an interplanetary alliance...but she becomes attracted to Kirk.
Episode 14

Whom Gods Destroy

Kirk and Spock deliver medicine to an insane asylum where a former Starfleet captain is being held, only to discover that he has freed the inmates and is running the place.
Episode 15

Let That Be Your Last Battlefield

The Enterprise finds itself host to two alien beings from the same planet, who share an intense and self-destructive hatred of each other.
Episode 16

The Mark of Gideon

Kirk beams down on a diplomatic mission...and finds himself on an Enterprise where all the crew have vanished and only a mysterious woman resides.
Episode 17

That Which Survives

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.
Episode 18

The Lights of Zetar

The Enterprise must deal with discorporeal cloud-like aliens who have already destroyed the inhabitants of a library planet and plan to eliminate the Enterprise crew if they cannot acquire a human host.
Episode 19

Requiem for Methuselah

While seeking a cure for a fever ravaging the Enterprise, Kirk and Spock encounter Flint, a hermit-like Earthman, and his beautiful young ward.
Episode 20

The Way to Eden

The Enterprise picks up a group of space "hippies" looking for Eden.
Episode 21

The Cloud Minders

To acquire the resources to cure a space plague, Kirk must resolve a mining dispute between the cultural elites of the cloud city of Stratos and the miners on the surface.
Episode 22

The Savage Curtain

Kirk and Spock meet Abraham Lincoln and Surak of Vulcan and must do battle with some of history's most terrible villains.
Episode 23

All Our Yesterdays

Kirk, Spock and McCoy enter a time portal and get stuck in the past on a planet about to be consumed by a nova.
Episode 24

The Turnabout Intruder

The Enterprise is in danger when Janice Lester, one of Kirk's former lovers, steals his body.

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