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Episode guide

Lost in Space: Season 3

Poster for Lost in Space Season 3

24 episodes · first aired Sep 6, 1967

The Jupiter 2 travels freely in space, visiting a new world in each episode, as the family attempts to either return to Earth or else at least reach their original destination in the Alpha Centauri system. A newly built "Space Pod" provides a means of transportation between the ship and passing planets, allowing for various escapades.

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  1. 1 Condemned of Space Sep 6, 1967 · 1h The beginning of the third season finds the Robinsons having to quickly leave the planet they are on, which is a similar plot to the beginning of the second season. Once in space, the…
  2. 2 Visit to a Hostile Planet Sep 13, 1967 · 1h The Jupiter 2 and all aboard are caught in a space 'time-warp'! After everything seems to return to normal, they're shocked to find Earth within their reach and decide to return home…
  3. 3 Kidnapped in Space Sep 9, 1967 · 1h Dr. Smith answers a distress call from an alien space ship. He arrives there using the Space Pod, and discovers that the aliens want him to operate on (actually, repair), their leader. It…
  4. 4 Hunter's Moon Sep 27, 1967 · 1h In an episode reminiscent of the first season episode "The Challenge", Professor Robinson and the Robot land the Space Pod on a planet, and Professor Robinson kills an attacking monster…
  5. 5 The Space Primevals Oct 4, 1967 · 1h The primitive beings are actually wards of a computer, Protinius, which can confer temporary advanced sentience on the leading man in order to communicate Protinius' will. The episode also…
  6. 6 Space Destructors Oct 11, 1967 · 1h Dr. Smith and the Robot are exploring a cave. Smith pushes several buttons on a conspicuous control panel. The buttons activate a cyborg creating device. It up to Will to stop Dr. Smith.
  7. 7 The Haunted Lighthouse Oct 18, 1967 · 1h Before leaving their planet, the Robinsons meet a boy alien called J-5. They take him with them to return him to his home planet. They meet a strange ship, which turns out to be an earth…
  8. 8 Flight into the Future Oct 25, 1967 · 1h Dr. Smith, Will, and the Robot are accidentally launched in the Space Pod. They land on a planet that is controlled by an alien machine that creates illusions to confuse visitors and drive…
  9. 9 Collision of Planets Nov 8, 1967 · 1h The Robinson's come across a group of space hippies who are trying to destroy the planet the Robinson's currently inhabit. Up up to the Robinson's and Dr. Smith to stop them or they will…
  10. 10 Space Creature Nov 15, 1967 · 1h A strange blue fog seems to be engulfing the Jupiter 2 periodically. Dr Smith and Will commment seperately that they want to be left alone. When the members of the Jupiter 2 begin to…
  11. 11 Deadliest of the Species Nov 22, 1967 · 1h The Robinsons encounter two Aliens who are on a mission to seek and destroy an escaped Robot Prisoner, whom they believe to be hiding at the Jupiter Two. Meanwhile, the Robot meets and…
  12. 12 A Day at the Zoo Nov 29, 1967 · 1h A caveboy appears and attempts to lure Penny away, but she refuses, and is instead caught in a net. She is transported to an intergalactic zoo, were she will be puton show, meanwhile Dr…
  13. 13 Two Weeks in Space Dec 13, 1967 · 1h 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…
  14. 14 Castles in Space Dec 20, 1967 · 1h The Robinsons take in a Princess who is fleeing from a bounty hunter. Will is captured by the bounty hunter, who wants to trade the boy for the princess. the robot then comes up with a…
  15. 15 The Anti-Matter Man Dec 27, 1967 · 1h Professor Robinson is caught in a matter transfer emission ray, and subsequently ends up in another dimension where he is confronted by a version of himself and Don. However this realm is…
  16. 16 Target: Earth Jan 3, 1968 · 1h The Space Pod lands on a planet that is inhabited by creatures who all look alike, and aspire to be different. They capture the Robinsons and make duplicates of them with the objective of…
  17. 17 Princess of Space Jan 10, 1968 · 1h A crew led by Captain Kraspo is searching for the missing Princess Alpha. They bring Will aboard their ship who makes them think the Penny might be there princess, because of this the…
  18. 18 Time Merchant Jan 17, 1968 · 1h Will is conducting an experiment in a cave and captures a man who claims to be the man who controls time for the entire universe. This ""Time Merchant"" takes Will, Professor Robinson…
  19. 19 The Promised Planet Jan 24, 1968 · 1h The Robot suddenly announces that the Jupiter II is approaching Alpha Centauri. Everyone is suprised, and the ship lands on a planet, where they are greeted by a group of people who appear…
  20. 20 Fugitives in Space Jan 31, 1968 · 1h Poor Don West is sent to a prison camp.....WITH Dr. Smith! Don and Dr Smith are installing some equiptment, when Dr Smith comes across and alien prison escapee. The priosoner alien makes…
  21. 21 Space Beauty Feb 14, 1968 · 1h The galactic showman, Farnum B returns as the producer of the Miss Galaxy Beauty Pageant. They want to Judy to be in the contest, she doesn't want to but Dr. Smith for forges her name and…
  22. 22 The Flaming Planet Feb 21, 1968 · 1h Dr. Smith disposes of a plant that has grown out of control, but once outside the plant attaches itself to the Jupiter 2. The plant apparently believe that Dr. Smith is its mother…
  23. 23 The Great Vegetable Rebellion Feb 28, 1968 · 1h Doctor Smith uses the Space Pod to land on a planet that the Jupiter II is passing by. It turns out that the planet has evolved in such a way that plants are the highest form of life, and…
  24. 24 Junkyard in Space Mar 6, 1968 · 1h The Jupiter 2 lands on a planet which serves as a junkyard. The Robinson's food supply is dwindling. So Dr. Smith tries to sell the robot and the ship in order to get food. Can Dr.Smith be…