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The Worst Episodes of Lost in Space

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Every episode of Lost in Space ranked from worst to best. Explore the Worst Episodes of Lost in Space!

The Worst Episodes of Lost in Space

After crash-landing on an alien planet, the Robinson family fights against all odds to survive and escape. But they're surrounded by hidden dangers.

Seasons3

  1. Background image for Three Little Birds
    6.2/10(27 votes)

    #1 - Three Little Birds

    S3:E1

    A year into their mission with the children of the Resolute, Judy, Penny and Will scramble to find the titanium they need to get to Alpha Centauri.

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  2. Background image for Stuck
    6.6/10(25 votes)

    #2 - Stuck

    S3:E5

    After crashing on a boggy planet, Maureen and Judy contend with a massive salivating creature, while John and Penny work to free the trapped Robot.

    Director:Unknown
    Writer:Unknown
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  3. Background image for Contact
    6.8/10(24 votes)

    #3 - Contact

    S3:E2

    While Judy sets out to find Grant Kelly, Penny and Will explore a mysterious tunnel. Light years away, Maureen, John and Don hunt for SAR's remains.

    Director:Unknown
    Writer:Unknown
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  4. Background image for The New Guy
    6.8/10(24 votes)

    #4 - The New Guy

    S3:E3

    Scarecrow helps Maureen and John plot an engine heist. Judy returns to camp with new passengers. Will makes a startling discovery in the alien city.

    Director:Unknown
    Writer:Unknown
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  5. Background image for Contingencies on Contingencies
    6.9/10(23 votes)

    #5 - Contingencies on Contingencies

    S3:E7

    The Robinsons race to get help for Will, warn the other colonists and activate a secret defense system. Vijay tags along with Penny on a risky outing.

    Director:Unknown
    Writer:Unknown
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  6. Background image for Nothing Left Behind
    7.0/10(24 votes)

    #6 - Nothing Left Behind

    S3:E4

    As the adults race to destroy all clues to the location of Alpha Centauri, the Robinson kids receive an ominous message from SAR.

    Director:Unknown
    Writer:Unknown
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    The 20 BEST Episodes of Lost in Space

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  8. Background image for Final Transmission
    7.0/10(24 votes)

    #7 - Final Transmission

    S3:E6

    The story of Don's run-in with SAR leads the Robinsons to an alarming realization. Will sneaks out on a dangerous solo mission.

    Director:Unknown
    Writer:Unknown
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  9. Background image for Trust
    7.1/10(23 votes)

    #8 - Trust

    S3:E8

    As the battle for Alpha Centauri unfolds, the Robinsons and their friends risk everything to restore peace and pave the way for a better future.

    Director:Unknown
    Writer:Unknown
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  10. Background image for The Robinsons Were Here
    7.3/10(2.9k votes)

    #9 - The Robinsons Were Here

    S1:E4

    The Robinsons make contact with another family of survivors, and Will races to protect his family after Judy learns what happened aboard the Resolute.

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  11. Background image for Transmission
    7.3/10(2.7k votes)

    #10 - Transmission

    S1:E5

    As the team builds a tower to signal the Resolute, Maureen investigates a planetary anomaly, and Will braces for a tough conversation with his dad.

    Director:Deborah Chow
    Writer:Kari Drake
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  12. Background image for Pressurized
    7.3/10(2.6k votes)

    #11 - Pressurized

    S1:E7

    While Dr. Smith moves ahead with his secret project, seismic activity wreaks havoc across the planet and leaves two teams facing impossible choices.

    Director:Tim Southam
    Writer:Vivian Lee
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  13. Background image for Impact
    7.4/10(4.4k votes)

    #12 - Impact

    S1:E1

    On the way to a space colony, a crisis sends the Robinsons hurtling towards an unfamiliar planet, where they struggle to survive a harrowing night.

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  14. Background image for Infestation
    7.4/10(3.0k votes)

    #13 - Infestation

    S1:E3

    Flashbacks reveal clues to Dr. Smith's past. The Robinsons contend with a new threat as the ship's fuel supply starts dropping -- fast.

    Director:Tim Southam
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  15. Background image for Eulogy
    7.4/10(2.7k votes)

    #14 - Eulogy

    S1:E6

    Maureen debates whether to share what she saw in the sky, Don leads a mission to find fuel, and the robot's presence stokes tensions within the group.

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  16. Background image for Diamonds in the Sky
    7.5/10(3.4k votes)

    #15 - Diamonds in the Sky

    S1:E2

    Another crash brings more travellers to the planet as the Robinsons work to salvage their ship with help from their mysterious new companion.

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  17. Background image for Resurrection
    7.5/10(2.5k votes)

    #16 - Resurrection

    S1:E9

    Judy sets out to find Maureen, while Will and Penny lead an expedition to the caves. Dr. Smith pursues a new escape plan.

    Director:Tim Southam
    Writer:Unknown
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  18. Background image for Trajectory
    7.6/10(2.6k votes)

    #17 - Trajectory

    S1:E8

    Maureen finds a solution to the fuel issue, but putting her plan into action proves trickier than expected. Dr. Smith realises her cover is blown.

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  19. Background image for Shipwrecked
    7.6/10(2.4k votes)

    #18 - Shipwrecked

    S2:E1

    Seven months later, marooned on a watery planet, the Robinsons make a risky bid to power up their Jupiter, and Will vows to track down the Robot.

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  20. Background image for Precipice
    7.6/10(2.1k votes)

    #19 - Precipice

    S2:E2

    Penny and Maureen become trapped in a mysterious metal trench, and Don falls prey to a nasty toxin.

    Director:Alex Graves
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  21. Background image for Echoes
    7.6/10(2.0k votes)

    #20 - Echoes

    S2:E3

    The Robinsons' dreams of a happy reunion fade when they realize something's very wrong aboard the Resolute. Smith seizes a chance to clear her name.

    Director:Leslie Hope
    Writer:Liz Sagal
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  22. Background image for Scarecrow
    7.6/10(2.0k votes)

    #21 - Scarecrow

    S2:E4

    While Will searches for clues to the Robot's fate, John and Judy travel to the dusty surface of the nearby planet to help their fellow survivors.

    Director:Jon East
    Writer:Kari Drake
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  23. Background image for Run
    7.8/10(2.1k votes)

    #22 - Run

    S2:E5

    John's predicament goes from bad to worse, sending Judy on a frantic race across the planet. Penny spies on Smith -- with help from an old friend.

    Director:Jon East
    Writer:Vivian Lee
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  24. Background image for Evolution
    7.8/10(1.9k votes)

    #23 - Evolution

    S2:E7

    John recruits an unlikely partner to help hunt down a secret audio signal intercepted by the ship. Will begins to suspect Adler is hiding something.

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  25. Background image for Severed
    7.9/10(1.9k votes)

    #24 - Severed

    S2:E6

    The fast-spreading contaminant leaves Penny, Smith and friends stranded in tight quarters. Will and Maureen set out with Adler to find the Robot.

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  26. Background image for Shell Game
    8.0/10(1.9k votes)

    #25 - Shell Game

    S2:E9

    Will and Penny scramble to hide the robots and figure out their next move. Meanwhile, Hastings amps up his war against the Robinsons.

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Worst Episodes Summary

"Three Little Birds" is the worst rated episode of "Lost in Space". It scored 6.2/10 based on 27 votes. Directed by Fred Toye and written by Matt Sazama, Burk Sharpless, it aired on 12/1/2021. This episode scored 0.4 points lower than the second lowest rated, "Stuck".