Season 1
Episode Guide
The Cage
S1
E1
When the Enterprise answers a distress call, Capt. Pike (Jeffrey Hunter) encounters manipulative aliens. Original series pilot. TVPG
The Man Trap
S1
E2
A shape-shifting, salt-craving creature terrorizes the crew of Enterprise
Charlie "X"
S1
E3
A powerful teenage boy wreaks havoc aboard the Enterprise
Where No Man Has Gone Before
S1
E4
While exploring the energy barrier at galaxy's edge that crippled an earlier ship, Kirk's long-time friend and crewmate Gary Mitchell begins mutating into a god-like entity disdainful of the "mortals" around him.
The Naked Time
S1
E5
The Enterprise crew catch a virus that removes their inhibitions
The Enemy Within
S1
E6
A transporter malfunction creates an evil Kirk
Mudd's Women
S1
E7
The Enterprise rescues con artist Harry Mudd and his "beautiful" female cargo
What are Little Girls Made Of
S1
E8
Nurse Chapel's long-lost fiance is found - along with his androids.
Miri
S1
E9
A strange group of children are discovered on an Earth-like planet.
Dagger of the Mind
S1
E10
A new treatment for the criminally insane has deadly results
The Corbomite Maneuver
S1
E11
While exploring an uncharted area of space, the Enterprise is outmatched and taken in tow by a massive spherical spaceship
The Menagerie, Part I
S1
E12
Spock hijacks the Enterprise to return an injured Captain Pike to Talos IV
The Menagerie, Part II
S1
E13
The Talosians force Kirk to view Captain Pike's original mission to their world
The Conscience of the King
S1
E14
Kirk suspects Shakespearean actor Anton Karidian as a mass murderer.
Balance of Terror
S1
E15
After attacking an outpost, Romulans battle the Enterprise
Shore Leave
S1
E16
While on shore leave, the crew's thoughts mysteriously come to life
The Galileo Seven
S1
E17
Seven Enterprise crew members go on a shuttle mission with Spock in command
The Squire of Gothos
S1
E18
A powerful entity known as Trelane torments the crew of the Enterprise.
Arena
S1
E19
Mysterious aliens pit Kirk against a Gorn in a barehanded duel.
Tomorrow Is Yesterday
S1
E20
A time accident leaves the Enterprise a UFO over 20th century Earth.
Court Martial
S1
E21
Kirk is recalled for a potential court-martial
The Return of the Archons
S1
E22
A world run by a computer named Landru traps the Enterprise crew.
Space Seed
S1
E23
Kirk meets Khan, a leader of Earth's Eugenics Wars of the 1990s.
A Taste of Armageddon
S1
E24
A computerized war fought by two planets ensnares the Enterprise.
This Side of Paradise
S1
E25
The Enterprise visits a colony where floral spores bring peaceful contentment.
The Devil in the Dark
S1
E26
An unknown monster threatens a critical mining operation.
Errand of Mercy
S1
E27
Kirk and Spock battle Klingons to free Organia.
The Alternative Factor
S1
E28
An alien being fights himself across two realities.
The City on the Edge of Forever
S1
E29
Kirk and Spock go back in time to save McCoy -- and their own universe.
Operation: Annihilate!
S1
E30
The Enterprise crew must rid planet Deneva -- and Spock -- of deadly parasites.