Season: 1

Original Airdate:October 20, 1966

Writer(s): Robert Bloch

Director(s):James Goldstone

Guest Stars
Michael Strong as Dr. Roger Korby
Sherry Jackson as Andrea
Ted Cassidy as Ruk
Harry Basch as Dr. Brown
Vince Deadrick as Security Guard Mathews
Budd Albright as Security Guard Rayburn

Stardate: 2712.4

Synopsis: Kirk outwits an evil scientist who makes a duplicate-Kirk.

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