S1·E5 The Enemy Within
Aired October 6, 1966 50 min ★ 7.3/10 · 63 TMDB votes
Synopsis
Split by a transporter malfunction into two beings with very different personalities, the resulting twin Captain Kirk proves that neither a purely evil nor a sweetly good captain can survive without the missing half.
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Director & writers
Richard MathesonWriterLeo PennDirector
Guest stars
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