Kirk pursues aliens who have taken Spock's brain.
Watch Star Trek - Series 3 Online Free
Episodes: 24 | Released: 1968 | Certificate: PG | Genre: Action/Adventure | Director: Marc Daniels
Actors: William Shatner , Leonard Nimoy , DeForest Kelley , James Doohan , George Takei , Nichelle Nichols , Majel Barrett , Walter Koenig
Captain Kirk becomes increasingly erratic and orders the Enterprise into Romulan space...where the ship is captured by a beautiful Romulan commander.
Kirk loses his memory and begins a life in a native village.
A group of children is being controlled by and evil force.
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.
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.
When the Enterprise brings aboard Klingon prisoners, an alien entity pits both sides against each other in an ever-escalating struggle.
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.
Kirk is trapped in interphase, while the Enterprise is trapped by a powerful energy web.
Platonians use psychokinetic power to toy with the crew.
Hyper accelerated aliens, invisible to the naked eye, take over the Enterprise.
On a planet doomed to destruction, Kirk, Spock & 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.
The Enterprise must escort an alien princess to her marriage to seal an interplanetary alliance...but she becomes attracted to Kirk.
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.
The Enterprise finds itself host to two alien beings from the same planet, who share an intense and self-destructive hatred of each other.
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.
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 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.
While seeking a cure for a fever ravaging the Enterprise, Kirk and Spock encounter Flint, a hermit-like Earthman, and his beautiful young ward.
The Enterprise picks up a group of space "hippies" looking for Eden.
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.
Kirk and Spock meet Abraham Lincoln and Surak of Vulcan and must do battle with some of history's most terrible villains.
Kirk, Spock and McCoy enter a time portal and get stuck in the past on a planet about to be consumed by a nova.
The Enterprise is in danger when Janice Lester, one of Kirk's former lovers, steals his body.