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Lost in Space Season 3 Episode 13

Two aliens, who are actually intergalactic bank robbers, transform themselves into Earthlings. They revive a man named Zumdish who operates a tour agency and they pretend to be his clients. The Robinson’s head off and Dr. Smith is left alone, Smith’s decides to turn the ship into a hotel and doesn’t realize how dangerous his guests are.

Episode Title: Two Weeks in Space

Air Date: 1967-12-13