The Alternative Factor

Episode 1

The Man Trap

Sep 8, 1966

Episode 2

Charlie X

Sep 15, 1966

Episode 3

Where No Man Has Gone Before

Sep 22, 1966

Episode 4

The Naked Time

Sep 29, 1966

Episode 5

The Enemy Within

Oct 6, 1966

Episode 6

Mudd's Women

Oct 13, 1966

Episode 7

What Are Little Girls Made Of?

Oct 20, 1966

Episode 8

Miri

Oct 27, 1966

Episode 9

Dagger of the Mind

Nov 3, 1966

Episode 10

The Corbomite Maneuver

Nov 10, 1966

Episode 11

The Menagerie (1)

Nov 17, 1966

Episode 12

The Menagerie (2)

Nov 24, 1966

Episode 13

The Conscience of the King

Dec 8, 1966

Episode 14

Balance of Terror

Dec 15, 1966

Episode 15

Shore Leave

Dec 29, 1966

Episode 16

The Galileo Seven

Jan 5, 1967

Episode 17

The Squire of Gothos

Jan 12, 1967

Episode 18

Arena

Jan 19, 1967

Episode 19

Tomorrow Is Yesterday

Jan 26, 1967

Episode 20

Court Martial

Feb 2, 1967

Episode 21

The Return of the Archons

Feb 9, 1967

Episode 22

Space Seed

Feb 16, 1967

Episode 23

A Taste of Armageddon

Feb 23, 1967

Episode 24

This Side of Paradise

Mar 2, 1967

Episode 25

The Devil in the Dark

Mar 9, 1967

Episode 26

Errand of Mercy

Mar 23, 1967

Episode 27

The Alternative Factor

Mar 30, 1967

Episode 28

The City on the Edge of Forever

Apr 6, 1967

Episode 29

Operation: Annihilate!

Apr 13, 1967