The Return of the Archons is the twenty-first episode of the first season of Star Trek: The Original Series, and the twenty-first episode overall.
Guest Stars: Harry Townes (Reger), Torin Thatcher (Marplon), DeForest Kelley (Dr. McCoy)
Featuring: Brioni Farrell (Tula), Sid Haig (First Lawgiver), Charles Macaulay (Landru), Jon Lormer (Tamar), Morgan Farley (Hacom), Christopher Held (Lindstrom)
With: James Doohan (Scott), George Takei (Sulu), Nichelle Nichols (Uhura), Sean Morgan (Lt. O'Neil), Ralph Maurer (Bilar), David L. Ross (Guard)
The Enterprise crew finds a world run by a computer named Landru.