The BEST episodes of Lost in Space
Every episode of Lost in Space ever, ranked from best to worst by thousands of votes from fans of the show. The best 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 Anti-Matter Man
Season 3 - Episode 15 - Aired 12/27/1967
Will and the robot try to rescue the kidnapped Prof. Robinson in a macabre world of orange grass, polka-dotted leaves, and animated rocks.
#2 - Follow the Leader
Season 1 - Episode 29 - Aired 4/27/1966
John falls into a cave containing a centuries-old mummy, whose spirit possesses John’s body.
#3 - War of the Robots
Season 1 - Episode 20 - Aired 2/9/1966
Will finds a rusted, more capable robot, but the Robinsons’ own robot warns him against rebuilding the device.
#4 - The Challenge
Season 1 - Episode 22 - Aired 3/2/1966
The Robinsons encounter a militant boy who is determined to prove his superiority over the earthlings.
#5 - Wish Upon a Star
Season 1 - Episode 11 - Aired 11/24/1965
Will and Dr. Smith discover a device that transforms wishes into realities.
#6 - The Magic Mirror
Season 1 - Episode 21 - Aired 2/16/1966
Penny discovers an extraordinary mirror which reflects a world that does not exist.
#7 - The Keeper (1)
Season 1 - Episode 16 - Aired 1/12/1966
The castaways’ planet is visited by a being traveling the universe to collect creatures—two of every kind.
#8 - The Golden Man
Season 2 - Episode 15 - Aired 12/28/1966
The Robinson women and Dr Smith become involved in a war between the leaders of two alien civilizations.
#9 - Return from Outer Space
Season 1 - Episode 15 - Aired 12/29/1965
Will disobeys John’s orders to stay away from the matter-transfer unit and is transported back to Earth.
#10 - My Friend, Mr. Nobody
Season 1 - Episode 7 - Aired 10/27/1965
Penny discovers a deep cave inhabited by an invisible but seemingly friendly voice.
#11 - Invaders from the Fifth Dimension
Season 1 - Episode 8 - Aired 11/3/1965
The travelers are menaced by glowing creatures who are looking for a humanoid brain.
#12 - The Sky is Falling
Season 1 - Episode 10 - Aired 11/17/1965
The Robinsons encounter a family of crablike visitors who are far from friendly.
#13 - The Keeper (2)
Season 1 - Episode 17 - Aired 1/19/1966
The Robinsons must turn Penny and Will over or face death.
#14 - The Sky Pirate
Season 1 - Episode 18 - Aired 1/26/1966
The Robinsons meet a space traveling Earth man, Alonzo P. Tucker, who was abducted by aliens in 1876.
#15 - The Oasis
Season 1 - Episode 9 - Aired 11/10/1965
The Robinsons face dangers on strange terrain, where water is running low and the heat is getting more intense.
#16 - The Hungry Sea
Season 1 - Episode 5 - Aired 10/13/1965
An earthquake threatens to seal the cave where Don, Judy, Will, and Penny are trapped.
#17 - Ghost in Space
Season 1 - Episode 19 - Aired 2/2/1966
Smith sets off an explosion in a bog, arousing an invisible, indestructible, and irresistible, creature.
#18 - Space Creature
Season 3 - Episode 10 - Aired 11/15/1967
A blue mist causes the travelers to disappear one by one until only Will is left.
#19 - Target Earth
Season 3 - Episode 16 - Aired 1/3/1968
Will tries to brew dissension among shapeless aliens who plan to conquer Earth.
#20 - Blast Off into Space
Season 2 - Episode 1 - Aired 9/16/1966
Dr Smith and Will befriend an old miner named Nerim. After a series of earthquakes indicates that the planet is breaking up, Dr Smith tries to convince them that it is merely the effects of mining, and no harm will come to the planet. John informs him that he is wrong and that the Robinson family will be departing within the day. It is a race against time to escape the crumbling planet.
#21 - One of Our Dogs is Missing
Season 1 - Episode 13 - Aired 12/8/1965
Dr. Smith and the women discover that their spaceship has been looted.
#22 - All That Glitters
Season 1 - Episode 26 - Aired 4/6/1966
Penny shelters an interplanetary fugitive who gives her a small disc that is supposedly the key to the greatest treasure in the galaxy.
#23 - His Majesty, Smith
Season 1 - Episode 24 - Aired 3/16/1966
Visitors from Andronica are looking for a king – a position Dr. Smith feels uniquely qualified to fill.
#24 - Wreck of the Robot
Season 2 - Episode 13 - Aired 12/14/1966
The robot is being used to help create a sinister army of machines.
#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.
Want to see the rest of the rankings?
Episode Ninja is a small business run by one person.
Pro memberships help fund servers and new feature development!