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The Worst Episodes of Lost in Space

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

Binge this in 23h 25m•Peaking at 8.4/10

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.

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Episode Rankings

  1. #1 Worst Episode
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    Lost in Space Season 3 Episode 1 - Three Little Birds
    7.2/10(1548 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.

    Director:Frederick E. O. Toye
    Writers:Matt Sazama, Burk Sharpless

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  2. Lost in Space Season 1 Episode 4 - The Robinsons Were Here
    7.3/10(2892 votes)

    #2 - 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.

    Director:Alice Troughton
    Writer:Katherine Collins

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  3. Lost in Space Season 1 Episode 5 - Transmission
    7.3/10(2769 votes)

    #3 - 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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  4. Lost in Space Season 1 Episode 7 - Pressurized
    7.3/10(2670 votes)

    #4 - 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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  5. Lost in Space Season 3 Episode 5 - Stuck
    7.3/10(1327 votes)

    #5 - 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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  6. Lost in Space Season 1 Episode 1 - Impact
    7.4/10(4400 votes)

    #6 - 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.

    Director:Neil Marshall
    Writers:Matt Sazama, Burk Sharpless

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  7. Lost in Space Season 1 Episode 3 - Infestation
    7.4/10(3064 votes)

    #7 - 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
    Writer:Zack Estrin

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  8. Lost in Space Season 1 Episode 6 - Eulogy
    7.4/10(2776 votes)

    #8 - 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.

    Director:Vincenzo Natali
    Writer:Ed McCardie

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  9. Lost in Space Season 1 Episode 2 - Diamonds in the Sky
    7.5/10(3426 votes)

    #9 - 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.

    Director:Neil Marshall
    Writers:Matt Sazama, Burk Sharpless

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  10. Lost in Space Season 1 Episode 9 - Resurrection
    7.5/10(2513 votes)

    #10 - 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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  11. Lost in Space Season 3 Episode 2 - Contact
    7.5/10(1369 votes)

    #11 - 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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  12. Lost in Space Season 3 Episode 3 - The New Guy
    7.5/10(1346 votes)

    #12 - 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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  13. Lost in Space Season 1 Episode 8 - Trajectory
    7.6/10(2596 votes)

    #13 - 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.

    Director:Stephen Surjik
    Writers:Katherine Collins, Kari Drake

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  14. Lost in Space Season 2 Episode 1 - Shipwrecked
    7.6/10(2448 votes)

    #14 - 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.

    Director:Alex Graves
    Writers:Matt Sazama, Burk Sharpless

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  15. Lost in Space Season 2 Episode 2 - Precipice
    7.6/10(2159 votes)

    #15 - Precipice

    S2:E2

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

    Director:Alex Graves
    Writer:Zack Estrin

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  16. Lost in Space Season 2 Episode 3 - Echoes
    7.6/10(2069 votes)

    #16 - 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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  17. Lost in Space Season 2 Episode 4 - Scarecrow
    7.6/10(1995 votes)

    #17 - 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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  18. Lost in Space Season 3 Episode 7 - Contingencies on Contingencies
    7.6/10(1336 votes)

    #18 - 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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  19. Lost in Space Season 2 Episode 5 - Run
    7.8/10(2126 votes)

    #19 - 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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  20. Lost in Space Season 3 Episode 4 - Nothing Left Behind
    7.8/10(1312 votes)

    #20 - 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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  21. Lost in Space Season 3 Episode 6 - Final Transmission
    7.8/10(1394 votes)

    #21 - 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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  22. Lost in Space Season 2 Episode 6 - Severed
    7.9/10(1972 votes)

    #22 - 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.

    Director:Tim Southam
    Writer:Katherine Collins

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  23. Lost in Space Season 2 Episode 7 - Evolution
    7.9/10(1919 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.

    Director:Tim Southam
    Writer:Daniel McLellan

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  24. Lost in Space Season 2 Episode 9 - Shell Game
    8.0/10(1946 votes)

    #24 - 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.

    Director:Stephen Surjik
    Writers:Vivian Lee, Zack Estrin

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  25. Lost in Space Season 1 Episode 10 - Danger, Will Robinson
    8.1/10(2916 votes)

    #25 - Danger, Will Robinson

    S1:E10

    As the clock ticks down toward the Resolute's departure, the Robinsons scramble to get off the planet -- and out from under Dr. Smith's thumb.

    Director:David Nutter
    Writers:Matt Sazama, Burk Sharpless

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Worst Episodes Summary

"Three Little Birds" is the worst rated episode of "Lost in Space". It scored 7.2/10 based on 1548 votes. Directed by Frederick E. O. Toye and written by Matt Sazama, Burk Sharpless, it aired on 12/1/2021. This episode scored 0.1 points lower than the second lowest rated, "The Robinsons Were Here".