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The Alternative Factor

S1 E27 50:32

An alien being fights himself across two realities. Air Date: Mar 29, 1967

Watch Full Episodes on CBS All Access

Full Episodes

S1 E1 Sep 08, 1966

The Man Trap

S1 E2 Sep 15, 1966

Charlie "X"

S1 E3 Sep 22, 1966

Where No Man Has Gone Before

S1 E4 Sep 29, 1966

The Naked Time

S1 E5 Oct 06, 1966

The Enemy Within

S1 E6 Oct 13, 1966

Mudd's Women

S1 E7 Oct 20, 1966

What are Little Girls Made Of

S1 E8 Oct 27, 1966

Miri

S1 E9 Nov 03, 1966

Dagger of the Mind

S1 E10 Nov 10, 1966

The Corbomite Maneuver

S1 E11 Nov 17, 1966

The Menagerie, Part I

S1 E12 Nov 24, 1966

The Menagerie, Part II