Lost in Space (2018–2021)

1. S01E01ImpactApril 13, 2018 6.9On the way to a space colony, a crisis sends the Robinsons hurtling towards an unfamiliar planet, where they struggle to survive a harrowing
2. S01E02Diamonds in the SkyApril 13, 2018 7.0Another crash brings more travellers to the planet as the Robinsons work to salvage their ship with help from their mysterious new companion
3. S01E03InfestationApril 13, 2018 6.9Flashbacks reveal clues to Dr. Smith's past. The Robinsons contend with a new threat as the ship's fuel supply starts dropping -- fast.
4. S01E04The Robinsons Were HereApril 13, 2018 7.0The Robinsons make contact with another family of survivors, and Will races to protect his family after Judy learns what happened aboard the
5. S01E05TransmissionApril 13, 2018 6.7As the team builds a tower to signal the Resolute, Maureen investigates a planetary anomaly, and Will braces for a tough conversation with h
6. S01E06EulogyApril 13, 2018 6.4Maureen 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
7. S01E07PressurizedApril 13, 2018 6.8While Dr. Smith moves ahead with his secret project, seismic activity wreaks havoc across the planet and leaves two teams facing impossible
8. S01E08TrajectoryApril 13, 2018 6.8Maureen finds a solution to the fuel issue, but putting her plan into action proves trickier than expected. Dr. Smith realises her cover is
9. S01E09ResurrectionApril 13, 2018 6.9Judy sets out to find Maureen, while Will and Penny lead an expedition to the caves. Dr. Smith pursues a new escape plan.
10. S01E10Season's bestDanger, Will RobinsonApril 13, 2018 7.0As the clock ticks down toward the Resolute's departure, the Robinsons scramble to get off the planet -- and out from under Dr. Smith's thum

Season 1 ranked & reviewed

1. S02E01Season's bestShipwreckedDecember 24, 2019 7.3Seven 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 R
2. S02E02PrecipiceDecember 24, 2019 6.9Penny and Maureen become trapped in a mysterious metal trench, and Don falls prey to a nasty toxin.
3. S02E03EchoesDecember 24, 2019 7.1The Robinsons' dreams of a happy reunion fade when they realize something's very wrong aboard the Resolute. Smith seizes a chance to clear h
4. S02E04ScarecrowDecember 24, 2019 7.2While 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 survi
5. S02E05RunDecember 24, 2019 7.2John'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 f
6. S02E06SeveredDecember 24, 2019 6.7The fast-spreading contaminant leaves Penny, Smith and friends stranded in tight quarters. Will and Maureen set out with Adler to find the R
7. S02E07EvolutionDecember 24, 2019 7.0John recruits an unlikely partner to help hunt down a secret audio signal intercepted by the ship. Will begins to suspect Adler is hiding so
8. S02E08UnknownDecember 24, 2019 7.2While Maureen leads a mutiny, Hastings visits John to deliver an ultimatum, and Penny tries to convince Will that his Robot has changed.
9. S02E09Shell GameDecember 24, 2019 7.2Will and Penny scramble to hide the robots and figure out their next move. Meanwhile, Hastings amps up his war against the Robinsons.
10. S02E10Ninety-SevenDecember 24, 2019 7.1The mission to save Scarecrow takes an unexpected turn, throwing the Resolute into chaos. Judy hatches a plan to get a ship to Alpha Centaur

Season 2 ranked & reviewed

1. S03E01Three Little BirdsDecember 1, 2021 6.3A 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 Ce
2. S03E02ContactDecember 1, 2021 6.7While 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
3. S03E03The New GuyDecember 1, 2021 6.8Scarecrow helps Maureen and John plot an engine heist. Judy returns to camp with new passengers. Will makes a startling discovery in the ali
4. S03E04Nothing Left BehindDecember 1, 2021 6.8As the adults race to destroy all clues to the location of Alpha Centauri, the Robinson kids receive an ominous message from SAR.
5. S03E05StuckDecember 1, 2021 6.7After crashing on a boggy planet, Maureen and Judy contend with a massive salivating creature, while John and Penny work to free the trapped
6. S03E06Final TransmissionDecember 1, 2021 6.8The story of Don's run-in with SAR leads the Robinsons to an alarming realization. Will sneaks out on a dangerous solo mission.
7. S03E07Contingencies on ContingenciesDecember 1, 2021 6.8The Robinsons race to get help for Will, warn the other colonists and activate a secret defense system. Vijay tags along with Penny on a ris
8. S03E08Season's bestTrustDecember 1, 2021 6.9As the battle for Alpha Centauri unfolds, the Robinsons and their friends risk everything to restore peace and pave the way for a better fut

Season 3 ranked & reviewed