The WORST episodes of Lost in Space
Every episode of Lost in Space ever, ranked from worst to best by thousands of votes from fans of the show. The worst episodes of Lost in Space!
A space colony family struggles to survive when a spy/accidental stowaway throws their ship hopelessly off course.
#1 - The Great Vegetable Rebellion
Season 3 - Episode 23 - Aired 2/28/1968
The Robinsons land on a planet where plants talk and seek revenge against the animal world.
#2 - Space Beauty
Season 3 - Episode 21 - Aired 2/14/1968
Trouble begins when Dr. Smith tricks Judy into entering an enigmatic dictator’s beauty contest.
#3 - Treasure of the Lost Planet
Season 2 - Episode 23 - Aired 3/1/1967
A space pirate demands that Dr Smith lead him to a buried treasure.
#4 - Princess of Space
Season 3 - Episode 17 - Aired 1/10/1968
Penny agrees to impersonate a long-lost princess to help quash a computer uprising.
#5 - Mutiny in Space
Season 2 - Episode 19 - Aired 2/1/1967
Will and Dr. Smith pursue the first mate who marooned Admiral Zahrt on their planet.
#6 - The Space Vikings
Season 2 - Episode 20 - Aired 2/8/1967
Smith finds the golden hammer of the Norse god Thor and blunders into a twilight zone of the gods.
#7 - The Thief from Outer Space
Season 2 - Episode 9 - Aired 11/9/1966
An intergalactic thief forces Will to join his search for a long-lost princess.
#8 - The Haunted Lighthouse
Season 3 - Episode 7 - Aired 10/18/1967
The Robinsons are endangered by a youngster who has put himself in control of their imaginations.
#9 - The Toymaker
Season 2 - Episode 18 - Aired 1/25/1967
Will and Smith are trapped in a four-dimensional toyshop, where a toymaker mistakes them for playthings.
#10 - Rocket to Earth
Season 2 - Episode 21 - Aired 2/15/1967
Smith is keen for the job of sorcerer’s apprentice after learning that a space magician’s rocket ship can reach Earth in a few hours.
#11 - Two Weeks in Space
Season 3 - Episode 13 - Aired 12/13/1967
Smith turns the Jupiter 2 into a hotel for humanoids, unaware that they are fugitives from space justice.
#12 - Castles in Space
Season 3 - Episode 14 - Aired 12/20/1967
A bandit threatens to hold Will until the Robinsons hand over a defrosted ice princess.
#13 - The Promised Planet
Season 3 - Episode 19 - Aired 1/24/1968
The Robinsons get a reception on a planet populated by music-loving teenagers.
#14 - The Questing Beast
Season 2 - Episode 17 - Aired 1/11/1967
Will learns the meaning of chivalry and honor when he serves as page to a knight-errant.
#15 - Junkyard in Space
Season 3 - Episode 24 - Aired 3/6/1968
A galactic junkman threatens to melt down the Jupiter 2 and cannibalize the Robot.
#16 - A Day at the Zoo
Season 3 - Episode 12 - Aired 11/29/1967
The space travelers try desperately to end a day at the zoo in which they have become specimens.
#17 - Collision of Planets
Season 3 - Episode 9 - Aired 11/8/1967
The Robinson's come across a group of space hippies who are trying to destroy the planet the Robinson's currently inhabit.
#18 - The Girl from the Green Dimension
Season 2 - Episode 16 - Aired 1/4/1967
Will is green! Smith must fight the evil Urso to restore Will’s normal color.
#19 - West of Mars
Season 2 - Episode 11 - Aired 11/23/1966
Dr Smith is mistaken for a notorious outlaw.
#20 - Space Destructors
Season 3 - Episode 6 - Aired 10/11/1967
Dr Smith activates a robot-manufacturing machine that turns out an army of obedient automatons.
#21 - The Colonists
Season 2 - Episode 25 - Aired 3/15/1967
A female warrior captures the Robinson party and puts the men to work preparing for the arrival of more conquering colonists.
#22 - The Astral Traveler
Season 2 - Episode 29 - Aired 4/12/1967
While exploring a mysterious cave, Will is transported through space to a haunted Scottish castle.
#23 - Flight into the Future
Season 3 - Episode 8 - Aired 10/25/1967
The space adventurers search for reality in a world of fantastic illusions.
#24 - The Prisoners of Space
Season 2 - Episode 6 - Aired 10/19/1966
The Galaxy Tribunal of Justice contacts the travelers to tell them they will be tried for crimes committed in space.
#25 - The Flaming Planet
Season 3 - Episode 22 - Aired 2/21/1968
The Robinsons must contend with a rapidly growing plant and missiles fired by aliens.