The best episode written by Norman Spinrad is "The Doomsday Machine", rated 8.067/10 from 45 user votes. It was "directed by Marc Daniels". "The Doomsday Machine" aired on 10/20/1967 and is rated 0.1 point(s) higher than their second highest rated, "The Stranger".
The starship Enterprise and its heavily-damaged sister ship, the USS Constellation, must work together to stop an alien planet-killing machine headed for the heart of Federation territory.
Director: Marc Daniels
Writer: Norman Spinrad
The Marshalls meet Enik, an intelligent, time-traveling relative of the Sleestak.
Director: N/A
Writer: Norman Spinrad