Lost in Space

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.

Last Updated: 7/25/2022Network: CBS
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Mutiny in Space
star
6.32
22 votes

#1 - 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.

Directors: Don Richardson
Watch Now:AmazoniTunes
Rocket to Earth
star
6.45
22 votes

#2 - 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.

Directors: Don Richardson
Watch Now:AmazoniTunes
The Space Vikings
star
6.54
24 votes

#3 - 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.

Directors: Ezra Stone
Watch Now:AmazoniTunes
Castles in Space
star
6.56
18 votes

#4 - 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.

Directors: Sobey Martin
Watch Now:AmazoniTunes
Treasure of the Lost Planet
star
6.68
25 votes

#5 - 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.

Directors: Harry Harris
Watch Now:AmazoniTunes
Princess of Space
star
6.68
25 votes

#6 - 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.

Directors: Don Richardson
Watch Now:AmazoniTunes
The Toymaker
star
6.70
27 votes

#7 - 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.

Directors: Robert Douglas
Watch Now:AmazoniTunes
The Questing Beast
star
6.75
24 votes

#8 - 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.

Directors: Don Richardson
Watch Now:AmazoniTunes
The Colonists
star
6.80
25 votes

#9 - 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.

Directors: Ezra Stone
Watch Now:AmazoniTunes
The Great Vegetable Rebellion
star
6.85
33 votes

#10 - 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.

Directors: Don Richardson
Watch Now:AmazoniTunes
Junkyard in Space
star
6.85
40 votes

#11 - 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.

Directors: Ezra Stone
Watch Now:AmazoniTunes
The Prisoners of Space
star
6.89
84 votes

#12 - 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.

Directors: Nathan Juran
Watch Now:AmazoniTunes
The Haunted Lighthouse
star
6.94
33 votes

#13 - 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.

Directors: Sobey Martin
Watch Now:AmazoniTunes
A Day at the Zoo
star
6.96
25 votes

#14 - 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.

Directors: Irving J. Moore
Watch Now:AmazoniTunes
Revolt of the Androids
star
6.96
27 votes

#15 - Revolt of the Androids

Season 2 - Episode 24 - Aired 3/8/1967

The Robinsons place their lives in jeopardy when they become involved in a revolt of half-human androids.

Directors: Don Richardson
Watch Now:AmazoniTunes
The Phantom Family
star
6.96
27 votes

#16 - The Phantom Family

Season 2 - Episode 27 - Aired 3/29/1967

An alien scientist gives Will 24 hours to teach his androids how to act like humans.

Directors: Ezra Stone
Watch Now:AmazoniTunes
Space Beauty
star
7.00
30 votes

#17 - 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.

Directors: Irving J. Moore
Watch Now:AmazoniTunes
The Space Croppers
star
7.01
68 votes

#18 - The Space Croppers

Season 1 - Episode 25 - Aired 3/30/1966

The Robinsons encounter space farmers who grow deadly plants and practice witchcraft.

Directors: Sobey Martin
Watch Now:AmazoniTunes
The Astral Traveler
star
7.04
24 votes

#19 - 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.

Directors: Don Richardson
Watch Now:AmazoniTunes
Kidnapped in Space
star
7.06
34 votes

#20 - Kidnapped in Space

Season 3 - Episode 3 - Aired 9/20/1967

Mechanical men threaten the travelers with death unless someone can fix their robot leader.

Directors: Don Richardson
Watch Now:AmazoniTunes
Forbidden World
star
7.07
58 votes

#21 - Forbidden World

Season 2 - Episode 4 - Aired 10/5/1966

The Robinsons are trapped on a fog-shrouded planet.

Directors: Don Richardson
Watch Now:AmazoniTunes
The Galaxy Gift
star
7.07
28 votes

#22 - The Galaxy Gift

Season 2 - Episode 30 - Aired 4/26/1967

Aliens enlist Dr Smith’s help to obtain a valuable amulet that could destroy the galaxy.

Directors: Ezra Stone
Watch Now:AmazoniTunes
The Girl from the Green Dimension
star
7.08
26 votes

#23 - 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.

Directors: Nathan Juran
Watch Now:AmazoniTunes
The Lost Civilization
star
7.08
60 votes

#24 - The Lost Civilization

Season 1 - Episode 27 - Aired 4/13/1966

The Robinson men discover an underground civilization while exploring a huge cave.

Directors: Don Richardson
Watch Now:AmazoniTunes
Space Destructors
star
7.09
32 votes

#25 - 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.

Directors: Don Richardson
Watch Now:AmazoniTunes

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