Updated: November 17, 2025

The top episodes of "Lost in Space" include classics like Follow the Leader, The Anti-Matter Man, and The Keeper, showcasing dramatic storytelling, memorable characters, and inventive science fiction concepts.

Original 1965 to 1968 Series Highlights:

1. Follow the Leader â€" John Robinsons body is possessed by a spirit named Canto, creating one of the darkest and most compelling episodes with complex character development and dramatic tension.

2. The Anti-Matter Man â€" Features an alternate-dimension John Robinson and a parallel universe conflict, highlighting the series sci-fi imagination and the actor dynamic performances.

3. The Keeper ( Parts 1 & 2 ) â€" The Robinsons encounter an intergalactic zookeeper collecting alien specimens, providing an action-packed two-part story while emphasizing family collaboration.

4. The Reluctant Stowaway â€" The pilot episode that introduces the Robinson family and Dr. Smith’s sabotage, effectively setting the tone for adventure and suspense.

5. Wish Upon a Star â€" A memorable blend of fantasy and horror, introducing a device that turns wishes into reality and demonstrating moral lessons with subtlety.

6. War of the Robots â€" Will encounters a more capable robot, and the Robinsons’ Robot proves its loyalty, marking a key developmental moment for the character.

7. My Friend, Mr. Nobody â€" Focuses on Penny’s ingenuity with her “imaginary friend,” offering a rare spotlight on her character and presenting elements of fantasy and emotional growth.

8. Return from Outer Space â€" Will travels back to Earth through a matter transmitter, highlighting imaginative science fiction storytelling and a holiday themed setting.

9. The Derelict â€" Known for unique depictions of alien species and character dynamics among the family, reinforcing the science fiction element of the show.

10. Trip Through the Robot â€" A clever take on intra-robot adventure, evoking a Fantastic Voyage style narrative with creative special effects.