The Enemy Within
Star Trek: The Original Series episode (season 1, episode 5)
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7.6/10 · IMDb
A transporter malfunction strands Sulu and others on a frigid planet and splits Kirk into two antithetical people.
Initial release: October 6, 1966
Director: Leo Penn
Air date: October 6, 1966
Screenplay: Richard Matheson
Distributed by: Netflix