1. The Reluctant Stowaway
Aired: Sep 15, 1965Date: October 16, 1997. The Jupiter 2 is to launch, but a saboteur wants to d...
2. The Derelict
Aired: Sep 22, 1965The Jupiter 2 is pulled into a giant ship occupied by bubble-like creatures.
3. Island in the Sky
Aired: Sep 29, 1965While spacewalking Doctor Robinson is pulled down onto a planet. Major West l...
4. There Were Giants in the Earth
Aired: Oct 6, 1965Due to the planet's orbit, the Robinsons are going to freeze to death unless ...
5. The Hungry Sea
Aired: Oct 13, 1965After experiencing the extreme cold, the planet gets closer to the sun, roast...
6. Welcome Stranger
Aired: Oct 20, 1965The Robinsons meet a fellow Earth explorer who is also lost in space. They he...
7. My Friend, Mr. Nobody
Aired: Oct 27, 1965Penny strikes up a friendship with a deep voice in a deep cave.
8. Invaders from the Fifth Dimension
Aired: Nov 2, 1965Macabre aliens -- quite literally talking heads -- need a humanoid brain to r...
9. The Oasis
Aired: Nov 9, 1965Smith eats some fruit that turns him into a paranoid giant.
10. The Sky Is Falling
Aired: Nov 16, 1965A small, crab-like robot heralds the arrival of a family of colonists from an...
11. Wish Upon a Star
Aired: Nov 23, 1965Will and Dr. Smith come upon an alien machine that grants wishes, which tests...
12. The Raft
Aired: Nov 30, 1965Will's "message-in-a-bottle" experiments deplete the supply of fuel for the J...
13. One of Our Dogs Is Missing
Aired: Dec 7, 1965With the men off on a mission, the Robinson women must deal with an alien int...
14. Attack of the Monster Plants
Aired: Dec 14, 1965Banished from camp for his latest endangering behavior, Dr. Smith discovers a...
15. Return from Outer Space
Aired: Dec 28, 1965Using a matter transfer device left behind by the Taurons, Will beams himself...
16. The Keeper: Part 1
Aired: Jan 11, 1966The Keeper is an alien who travels the galaxy collecting living pairs of inte...
17. The Keeper: Part 2
Aired: Jan 18, 1966Troubles with The Keeper would be over if Dr. Smith hadn't skulked aboard his...
18. The Sky Pirate
Aired: Jan 25, 1966Will becomes fast friends with Captain Alonzo P. Tucker, an Earthling who esc...
19. Ghost in Space
Aired: Feb 1, 1966Trying to contact his Uncle Thaddeus during a séance, Doctor Smith summons a ...
20. War of the Robots
Aired: Feb 8, 1966After the Robinsons repair a damaged robot, it first helps them and then plot...
21. The Magic Mirror
Aired: Feb 15, 1966Penny stumbles into an alien mirror and finds a universe occupied by one very...
22. The Challenge
Aired: Mar 1, 1966John and Will fight a battle with an alien father and son that is to the death.
23. The Space Trader
Aired: Mar 8, 1966After ruining the Robinson's food supply, Doctor Smith makes a deal with the ...
24. His Majesty Smith
Aired: Mar 15, 1966Doctor Smith delights that he is made ruler of an alien species until he lear...
25. The Space Croppers
Aired: Mar 29, 1966The Robinsons run into a group of space hillbillies whom Zachary believes mig...
26. All That Glitters
Aired: Apr 5, 1966Dr. Smith and Penny obtain a ring that will turn anything to platinum.
27. The Lost Civilization
Aired: Apr 12, 1966Will awakes a sleeping princess whom he now must marry. Her race has been awa...
28. A Change of Space
Aired: Apr 19, 1966A strange interdimensional ship turns Will into a genius and Dr. Smith into a...
29. Follow the Leader
Aired: Apr 27, 1966An evil spirit possesses John Robinson and plans to fly the Jupiter 2 back to...