Lost in Space
Season 1
29 episodes
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S01E01 The Reluctant Stowaway
As the Jupiter 2 prepares to launch, Colonel Dr. Smith comes on board and ends up being trapped onboard during blastoff. Because of him being there, the Jupiter 2 careens off course and becomes lost in space.
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S01E02 The Derelict
The Jupiter 2 is pulled into a giant ship occupied by bubble-like creatures.
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S01E03 Island in the Sky
While spacewalking Doctor Robinson is pulled down onto a planet. Major West lands the ship to search for him.
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S01E04 There Were Giants in the Earth
Due to the planet's orbit, the Robinsons are going to freeze to death unless they head south.
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S01E05 The Hungry Sea
After experiencing the extreme cold, the planet gets closer to the sun, roasting it. Smith sends the robot to warn the Robinsons.
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S01E06 Welcome Stranger
The Robinsons meet a fellow Earth explorer who is also lost in space. They help him repair his ship and ask him to take Will and Penny home.
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S01E07 My Friend, Mr. Nobody
Penny strikes up a friendship with a deep voice in a deep cave.
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S01E08 Invaders from the Fifth Dimension
Macabre aliens -- quite literally talking heads -- need a humanoid brain to replace a worn out computer in their spaceship. They capture Smith, but quickly realize that his brain is unsatisfactory. The aliens release Smith so that he can bring them somebody more suitable: "a small Robinson."
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S01E09 The Oasis
The Robinsons face dangers on strange terrain, where water is running low and the heat is getting more intense.
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S01E10 The Sky is Falling
A small, crab-like robot heralds the arrival of a family of colonists from an alien race called the Taurons. John believes that they are peaceful settlers, but Smith insists that they are the vanguard of an invading army.
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S01E11 Wish Upon a Star
Will and Dr. Smith come upon an alien machine that grants wishes, which tests the values of the Robinson group.
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S01E12 The Raft
Will's "message-in-a-bottle" experiments deplete the supply of fuel for the Jupiter 2. John and Don work on an alternate fuel source, but they cannot stabilize the output. Deciding to build a smaller, 2-man craft, they pull the reactor chamber out and use Will's experiments to construct a "space raft."
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S01E13 One of Our Dogs is Missing
With the men off on a mission, the Robinson women must deal with an alien intruder.
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S01E14 Attack of the Monster Plants
Banished from camp for his latest endangering behavior, Dr. Smith discovers alien plants that can duplicate things (including people), which he uses to his advantage.
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S01E15 Return from Outer Space
Using a matter transfer device left behind by the Taurons, Will beams himself back to Earth. He arrives safely in the small town of Hatfield Four Corners, Vermont, but his pleas for help are considered the fantasies of a runaway boy.
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S01E16 The Keeper (1)
The Keeper is an alien who travels the galaxy collecting living pairs of interesting or rare animals. His courtly overtures towards the Robinsons belie his true intention -- to add a pair of humans to his incredible menagerie.
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S01E17 The Keeper (2)
Troubles with The Keeper would be over if Dr. Smith hadn't skulked aboard his ship and released all the animals, putting The Keeper in a position to blackmail the Robinsons for their children
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S01E18 The Sky Pirate
Will becomes fast friends with Captain Alonzo P. Tucker, an Earthling who escaped his alien captors to become a wandering space buccaneer. But Tucker's roguish charm hides a secret that could destroy them all.
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S01E19 Ghost in Space
Trying to contact his Uncle Thaddeus during a séance, Doctor Smith summons a ghostly monster native to the planet.
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S01E20 War of the Robots
After the Robinsons repair a damaged robot, it first helps them and then plots to capture them.
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S01E21 The Magic Mirror
During a cosmic storm, Dr. Smith and Penny discover a strange mirror. Dr. Smith becomes interested in the mirror because it has platinum in it. Meanwhile Penny gets very emotional and wants to stay the way she is when Judy tells her she should dress feminine once in a while. Later Debbie the Bloop is followed into the strange mirror where a pocket universe with a odd boy is discovered.
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S01E22 The Challenge
John and Will fight a battle with an alien father and son that is to the death.
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S01E23 The Space Trader
After ruining the Robinson's food supply, Doctor Smith makes a deal with the space trader and gives his body for food provided he collects it in 200 years. The space trader comes to collect immediately.
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S01E24 His Majesty Smith
Doctor Smith delights that he is made ruler of an alien species until he learns that he is also their sacrifice.
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S01E25 The Space Croppers
The Robinsons run into a group of space hillbillies whom Zachary believes might take him back to Earth.
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S01E26 All That Glitters
Dr. Smith and Penny obtain a ring that will turn anything to platinum.
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S01E27 The Lost Civilization
Will awakes a sleeping princess whom he now must marry. Her race has been awakened and now plans to conquer the universe starting with Earth.
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S01E28 A Change of Space
A strange interdimensional ship turns Will into a genius and Dr. Smith into an old man.
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S01E29 Follow the Leader
An evil spirit possesses John Robinson and plans to fly the Jupiter 2 back to his home world, even at the expense of Will's life.
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