Season 2, Episode 23 Treasure of the Lost Planet
A space pirate demands that Dr. Smith lead him to a buried treasure. Albert Salmi. Maureen: June Lockhart. John: Guy Williams. Don: Mark Goddard.
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- Rating: None
- Premise: The space family Robinson is sent on a five-year mission to find a new planet to colonize, but the voyage is sabotaged time and again by an inept stowaway, Dr. Zachary Smith. The family's spaceship, Jupiter II, also carries a friendly robot who endures an… (more)