The BEST episodes of Lost in Space season 1
Every episode of Lost in Space season 1, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Lost in Space season 1!
A space colony family struggles to survive when a spy/accidental stowaway throws their ship hopelessly off course.
#1 - 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.
#2 - Wish Upon a Star
Season 1 - Episode 11 - Aired 11/24/1965
Will and Dr. Smith discover a device that transforms wishes into realities.
#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 - 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.
#6 - 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.
#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 - 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.
#9 - 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.
#10 - 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.
#11 - The Keeper (2)
Season 1 - Episode 17 - Aired 1/19/1966
The Robinsons must turn Penny and Will over or face death.
#12 - 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.
#13 - 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.
#14 - The Magic Mirror
Season 1 - Episode 21 - Aired 2/16/1966
Penny discovers an extraordinary mirror which reflects a world that does not exist.
#15 - 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.
#16 - 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.
#17 - 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.
#18 - Island in the Sky
Season 1 - Episode 3 - Aired 9/29/1965
John descends from the orbiting spaceship to explore a planet that the Robinson's are planning to land on.
#19 - There Were Giants in the Earth
Season 1 - Episode 4 - Aired 10/6/1965
The Robinsons discover strange forms of life where they have established a self-sustaining community.
#20 - Attack of the Monster Plants
Season 1 - Episode 14 - Aired 12/15/1965
Plants grow to huge proportions and Smith schemes to steal the canisters containing the spaceship’s fuel supply.
#21 - The Reluctant Stowaway
Season 1 - Episode 1 - Aired 9/15/1965
In 1997, the Robinsons take off on the first mission to colonize space only to discover an enemy agent aboard their spacecraft.
#22 - 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.
#23 - The Raft
Season 1 - Episode 12 - Aired 12/1/1965
The Robinsons construct a two-man vehicle to fly back to Earth.
#24 - The Derelict
Season 1 - Episode 2 - Aired 9/22/1965
John and Maureen, trying to return to their spaceship, are threatened by a comet.
#25 - Welcome Stranger
Season 1 - Episode 6 - Aired 10/20/1965
The Robinsons are visited by a long-lost astronaut, who agrees to help their children return to Earth.