Season 3, Episode 19 The Promised Planet
The Robinsons get a reception on a planet populated by music-loving teenagers. Will: Bill Mumy. Penny: Angela Cartwright. Bartholomew: Gil Rogers. Robot: Bob May. Smith: Jonathan Harris. John: Guy Williams. Don: Mark Goddard. Maureen: June Lockhart.
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- 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)