The Best Episodes of Lost in Space

Last Updated: Jan 12, 2019

The space family Robinson is sent on a five-year mission to find a new planet to colonize, but the voyage is sabotaged time and again by an inept stowaway, Dr. Zachary Smith. The family's spaceship, Jupiter II, also carries a friendly robot who endures an endless stream of abuse from Dr. Smith, but is a trusted companion of young Will Robinson ('Danger, Will Robinson' became the show's catchphrase). The sci-fi cult favorite was created by Irwin Allen, and inspired an uninspired 1998 movie.

The Challenge

#1 - The Challenge

Season 1 - Episode 22

The Robinsons encounter a militant boy who is determined to prove his superiority over the earthlings.

star 7.88
25 votes
Directors: Don Richardson
Writers: Barney Slater
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The War of the Robots

#2 - The War of the Robots

Season 1 - Episode 20

Will finds a rusted, more capable robot, but the Robinsons’ own robot warns him against rebuilding the device.

star 7.74
35 votes
Directors: Sobey Martin
Writers: Barney Slater
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The Astral Traveler

#3 - The Astral Traveler

Season 2 - Episode 29

While exploring a mysterious cave, Will is transported through space to a haunted Scottish castle.

star 7.69
13 votes
Directors: Don Richardson
Writers: Carey Wilbur, Carey Wilber
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The Flaming Planet

#4 - The Flaming Planet

Season 3 - Episode 22

The Robinsons must contend with a rapidly growing plant and missiles fired by aliens.

star 7.68
19 votes
Directors: Don Richardson
Writers: Barney Slater
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The Space Primevals

#5 - The Space Primevals

Season 3 - Episode 5

In an attempt to rescue Don and Smith, the Robinsons pit their robot against a computer that rules a race of primitive aliens.

star 7.67
24 votes
Directors: Nathan Juran
Writers: Peter Packer
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Visit to a Hostile Planet

#6 - Visit to a Hostile Planet

Season 3 - Episode 2

A time warp transports the travelers to a hostile planet – Earth as it was in 1947.

star 7.64
25 votes
Directors: Sobey Martin
Writers: Peter Packer
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Wish Upon a Star

#7 - Wish Upon a Star

Season 1 - Episode 11

Will and Dr. Smith discover a device that transforms wishes into realities.

star 7.64
44 votes
Directors: Sutton Roley
Writers: Barney Slater
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Wreck of the Robot

#8 - Wreck of the Robot

Season 2 - Episode 13

The robot is being used to help create a sinister army of machines.

star 7.62
24 votes
Directors: Nathan Juran
Writers: Barney Slater
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Ghost in Space

#9 - Ghost in Space

Season 1 - Episode 19

Smith sets off an explosion in a bog, arousing an invisible, indestructible, and irresistible, creature.

star 7.62
29 votes
Directors: Sobey Martin
Writers: Barney Slater
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Follow the Leader

#10 - Follow the Leader

Season 1 - Episode 29

John falls into a cave containing a centuries-old mummy, whose spirit possesses John’s body.

star 7.62
29 votes
Directors: Don Richardson
Writers: Barney Slater
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The Magic Mirror

#11 - The Magic Mirror

Season 1 - Episode 21

Penny discovers an extraordinary mirror which reflects a world that does not exist.

star 7.62
26 votes
Directors: Nathan Juran
Writers: Jackson Gillis
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Target: Earth

#12 - Target: Earth

Season 3 - Episode 16

Will tries to brew dissension among shapeless aliens who plan to conquer Earth.

star 7.61
18 votes
Directors: Nathan Juran
Writers: Peter Packer
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The Sky Pirate

#13 - The Sky Pirate

Season 1 - Episode 18

The Robinsons meet a space traveling Earth man, Alonzo P. Tucker, who was abducted by aliens in 1876.

star 7.59
22 votes
Directors: Sobey Martin
Writers: Carey Wilbur, Carey Wilber
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Hunter's Moon

#14 - Hunter's Moon

Season 3 - Episode 4

John is captured by a maniacal humanoid and made the quarry in a sadistic big-game hunt.

star 7.59
17 votes
Directors: Don Richardson
Writers: Jack Turley
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The Space Creature

#15 - The Space Creature

Season 3 - Episode 10

A blue mist causes the travelers to disappear one by one until only Will is left.

star 7.58
19 votes
Directors: Sobey Martin
Writers: William Welch
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West of Mars

#16 - West of Mars

Season 2 - Episode 11

Dr Smith is mistaken for a notorious outlaw.

star 7.55
20 votes
Directors: Nathan Juran
Writers: Michael Fessier
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The Promised Planet

#17 - The Promised Planet

Season 3 - Episode 19

The Robinsons get a reception on a planet populated by music-loving teenagers.

star 7.53
17 votes
Directors: Ezra Stone
Writers: Peter Packer
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The Golden Man

#18 - The Golden Man

Season 2 - Episode 15

The Robinson women and Dr Smith become involved in a war between the leaders of two alien civilizations.

star 7.52
21 votes
Directors: Don Richardson
Writers: Barney Slater
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A Visit to Hades

#19 - A Visit to Hades

Season 2 - Episode 12

Smith is transported to a hellish place where he becomes the terrified tool of a satanic stranger.

star 7.52
21 votes
Directors: Don Richardson
Writers: Carey Wilbur, Carey Wilber
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Flight Into the Future

#20 - Flight Into the Future

Season 3 - Episode 8

The space adventurers search for reality in a world of fantastic illusions.

star 7.45
22 votes
Directors: Sobey Martin
Writers: Peter Packer
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Return From Outer Space

#21 - Return From Outer Space

Season 1 - Episode 15

Will disobeys John’s orders to stay away from the matter-transfer unit and is transported back to Earth.

star 7.45
47 votes
Directors: Nathan Juran
Writers: Peter Packer
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The Condemned of Space

#22 - The Condemned of Space

Season 3 - Episode 1

The Robinsons board a computer-controlled spacecraft filled with frozen men.

star 7.44
27 votes
Directors: Nathan Juran
Writers: Peter Packer
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Deadliest of the Species

#23 - Deadliest of the Species

Season 3 - Episode 11

The Robinsons’ robot flips over a mechanical beauty programmed for pure evil. Robot: Bob May.

star 7.44
18 votes
Directors: Sobey Martin
Writers: Robert Hamner
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Space Beauty

#24 - Space Beauty

Season 3 - Episode 21

Trouble begins when Dr. Smith tricks Judy into entering an enigmatic dictator’s beauty contest.

star 7.44
18 votes
Writers: Jackson Gillis
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The Curse of Cousin Smith

#25 - The Curse of Cousin Smith

Season 2 - Episode 10

Jeremiah Smith plots to liquidate his doctor cousin and claim the family fortune.

star 7.44
16 votes
Directors: Justis Addis
Writers: Barney Slater
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