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Space Circus is the fifth episode of the second season of Lost in Space, and the thirty-fourth episode overall.
Guy Williams (Dr. John Robinson),
June Lockhart (Maureen Robinson)
Mark Goddard (Don West),
Marta Kristen (Judy Robinson),
Billy Mumy (Will Robinson)
Angela Cartwright (Penny Robinson)
Special Guest Star:
Jonathan Harris (Dr. Zachary Smith)
James Westerfield (Dr. Marvello)
Melinda Fee (Fenestra),
Dawson Palmer (The Monster),
Michael Green (Nubu)
The ringmaster of a space circus asks Will and Smith to join his troupe.
Behind the Scenes
Allusions and References