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Lost in Space Season 1 Episodes
Season 1 Episode Guide
29 Episodes 1965 - 1966
Episode 1
The Reluctant Stowaway
Wed, Sep 15, 1965 60 mins
The Robinsons take off on the first space colonization mission---and discover an enemy agent aboard their spacecraft. Will: Billy Mumy. John: Guy Williams. Maureen: June Lockhart. Smith: Jonathan Harris. Don: Mark Goddard. Penny: Angela Cartwright.
Episode 2
The Derelict
Wed, Sep 22, 1965 60 mins
John and Maureen, trying to return to their spaceship, are threatened by a comet. John: Guy Williams. Maureen: June Lockhart. Don: Mark Goddard. Smith: Jonathan Harris.
Episode 3
Island in the Sky
Wed, Sep 29, 1965 60 mins
John descends from the orbiting spaceship to explore a planet. John: Guy Williams. Maureen: June Lockhart. Don: Mark Goddard. Smith: Jonathan Harris. Will: Billy Mumy.
Episode 4
There Were Giants in the Earth
Wed, Oct 6, 1965 60 mins
The Robinsons discover strange forms of life where they have established a self-sustaining community. Maureen: June Lockhart. John: Guy Williams. Don: Mark Goddard. Smith: Jonathan Harris. Will: Billy Mumy. Penny: Angela Cartwright.
Episode 5
The Hungry Sea
Wed, Oct 13, 1965 60 mins
An earthquake threatens to seal the cave where Don, Judy, Will and Penny are trapped. Maureen: June Lockhart. John: Guy Williams. Don: Mark Goddard. Judy: Marta Kristen. Will: Billy Mumy. Penny: Angela Cartwright.
Episode 6
Welcome Stranger
Wed, Oct 20, 1965 60 mins
The Robinsons are visited by a long-lost astronaut, who agrees to help their children return to Earth. Will: Billy Mumy. John: Guy Williams. Maureen: June Lockhart. Penny: Angela Cartwright. Don: Mark Goddard. Smith: Jonathan Harris.
Episode 7
My Friend, Mr. Nobody
Wed, Oct 27, 1965 60 mins
Penny discovers a deep cave inhabited by an invisible---but friendly---voice. John: Guy Williams. Smith: Jonathan Harris. Maureen: June Lockhart. Will: Billy Mumy. Don: Mark Goddard.
Episode 8
Invaders From the Fifth Dimension
Wed, Nov 3, 1965 60 mins
The travelers are menaced by glowing creatures---who are looking for a humanoid brain. John: Guy Williams. Maureen: June Lockhart. Smith: Jonathan Harris.
Episode 9
The Oasis
Wed, Nov 10, 1965 60 mins
The Robinsons face dangers on strange terrain, where water is running low---and the heat is getting more intense. John: Guy Williams. Will: Billy Mumy. Maureen: June Lockhart. Smith: Jonathan Harris.
Episode 10
The Sky Is Falling
Wed, Nov 17, 1965 60 mins
The Robinsons encounter a family crablike visitors who are far from friendly. Will: Billy Mumy. Maureen: June Lockhart. John: Guy Williams. Don: Mark Goddard. Rethso: Don Matheson. Lunon: Eddie Rosson. Moela: Francoise Ruggieri.
Episode 11
Wish Upon a Star
Wed, Nov 24, 1965 60 mins
Will and Dr. Smith discover a device that transforms wishes into realities. Don: Mark Goddard. Judy: Marta Kristen.
Episode 12
The Raft
Wed, Dec 1, 1965 60 mins
The Robinsons construct a two-man vehicle to fly back to Earth. John: Guy Williams. Smith: Jonathan Harris. Will: Billy Mumy. Don: Mark Goddard. Maureen: June Lockhart.
Episode 13
One of Our Dogs Is Missing
Thu, Dec 9, 1965 60 mins
Dr. Smith and the women discover that their spaceship has been looted. Maureen: June Lockhart. John: Guy Williams. Will: Billy Mumy. Judy: Marta Kristen. Don: Mark Goddard. Penny: Angela Cartwright.
Episode 14
Attack of the Monster Plants
Wed, Dec 15, 1965 60 mins
Smith schemes to steal the canisters containing the spaceship's fuel supply. John: Guy Williams. Don: Mark Goddard. Will: Billy Mumy. Maureen: June Lockhart. Judy: Marta Kristen.
Episode 15
Return From Outer Space
Wed, Dec 29, 1965 60 mins
Will disobeys John's orders to stay away from the matter-transfer unit---and is transported back to Earth. John: Guy Williams. Smith: Jonathan Harris. Don: Mark Goddard. Maureen: June Lockhart. Clara: Reta Shaw. Davey: Donald Losby. Ruth: Sheila Mathews. Judy: Marta Kristen. Baxendale: Walter Sande.
Episode 16
The Keeper
Wed, Jan 12, 1966 60 mins
First of two parts. The castaways' planet is visited by a being traveling the universe to collect creatures---two of every kind. Keeper: Michael Rennie. John: Guy Williams. Maureen: June Lockhart. Smith: Jonathan Harris. Will: Billy Mumy. Penny: Angela Cartwright.
Episode 17
The Keeper
Wed, Jan 19, 1966 60 mins
Conclusion. The Robinsons must turn Penny and Will over or face death. Keeper: Michael Rennie. John: Guy Williams. Maureen: June Lockhart. Don: Mark Goddard. Judy: Marta Kristen.
Episode 18
The Sky Pirate
Wed, Jan 26, 1966 60 mins
Will is taken hostage by a space pirate (Albert Salmi) who carries a robot parrot on his shoulder. Smith: Jonathan Harris. John: Guy Williams. Maureen: June Lockhart. Don: Mark Goddard. Judy: Marta Kristen. Penny: Angela Cartwright.
Episode 19
Ghost in Space
Wed, Feb 2, 1966 60 mins
Smith sets off an explosion in a bog, arousing an invisible, indestructible---and irresistible---creature. Maureen: June Lockhart. John: Guy Williams. Will: Billy Mumy. Don: Mark Goddard.
Episode 20
The War of the Robots
Wed, Feb 9, 1966 60 mins
Will finds a rusted robot---but the Robinsons' own robot warns him against rebuilding the device. John: Guy Williams. Smith: Jonathan Harris. Maureen: June Lockhart. Don: Mark Goddard. Judy: Marta Kristen. Penny: Angela Cartwright.
Episode 21
The Magic Mirror
Wed, Feb 16, 1966 60 mins
Penny discovers an extraordinary mirror---which reflects a world that does not exist. John: Guy Williams. Boy: Michael J. Pollard. Maureen: June Lockhart. Don: Mark Goddard. Smith: Jonathan Harris. Will: Billy Mumy. Judy: Marta Kristen.
Episode 22
The Challenge
Wed, Mar 2, 1966 60 mins
The Robinsons encounter a militant boy (Kurt Russell) who is determined to prove his superiority over the earthlings. Ruler: Michael Ansara. John: Guy Williams. Smith: Jonathan Harris. Maureen: June Lockhart. Don: Mark Goddard.
Episode 23
The Space Trader
Wed, Mar 9, 1966 60 mins
The Robinsons are victimized by a huckster (Torin Thatcher) who will stop at nothing to get their equipment. John: Guy Williams. Maureen: June Lockhart. Don: Mark Goddard. Smith: Jonathan Harris. Penny: Angela Cartwright. Will: Billy Mumy. Judy: Marta Kristen.
Episode 24
His Majesty, Smith
Wed, Mar 16, 1966 60 mins
Visitors from Andronica are looking for a king---a position Dr. Smith feels uniquely qualified to fill. Maureen: June Lockhart. John: Guy Williams. Don: Mark Goddard. Nexus: Liam Sullivan. Alien: Kevin Hagen. Judy: Marta Kristen.
Episode 25
The Space Croppers
Wed, Mar 30, 1966 60 mins
The Robinsons encounter space farmers who grow deadly plants---and practice witchcraft. Sybilla: Mercedes McCambridge. Smith: Jonathan Harris. Will: Billy Mumy. Maureen: June Lockhart. Effra: Sherry Jackson. John: Guy Williams.
Episode 26
All That Glitters
Wed, Apr 6, 1966 60 mins
Penny shelters Ohan, an interplanetary fugitive who gives her a small disc---supposedly the key to the greatest treasure in the galaxy. Smith: Jonathan Harris. Bolix: Werner Klemperer. Ohan: Larry Ward. Maureen: June Lockhart.
Episode 27
Lost Civilization
Wed, Apr 13, 1966 60 mins
The Robinsons take shelter in a huge cave, giving Will a chance to go exploring---deep into the cavern's dark interior. John: Guy Williams. Princess: Kym Karath. Major: Royal Dano. Maureen: June Lockhart.
Episode 28
A Change of Space
Wed, Apr 20, 1966 60 mins
Will and Smith, on an alien spaceship, enter the sixth dimension---and emerge with personality changes. Will: Billy Mumy. Smith: Jonathan Harris. Alien: Frank Graham. John: Guy Williams. Maureen: June Lockhart. Don: Mark Goddard. Judy: Marta Kristen.
Episode 29
Follow the Leader
Wed, Apr 27, 1966 60 mins
John falls into a cave containing a centuries-old mummy, whose spirit possesses John's body. Maureen: June Lockhart. Don: Mark Goddard. Smith: Jonathan Harris. Will: Billy Mumy. Judy: Marta Kristen.
