"West of Mars (LiS episode)"@en . . "Directed by"@en . . "Written by"@en . . . "Smith changes places with his doppelganger, a notorious space desperado."@en . "Previous episode"@en . "LiS episode"@en . "\"A Visit to Hades\""@en . "\"West of Mars\""@en . "300"^^ . . "Smith changes places with his doppelganger, a notorious space desperado."@en . . . "Westofmars.jpg"@en . "9512"^^ . "Next episode"@en . "\"Curse of Cousin Smith\""@en . "Production #"@en . "2"^^ . "First aired"@en . "1966-11-30"^^ . "Watch online now"@en .