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Lost in Space

Lost in Space Season 3: Episode Guide & Ratings

2018TV Series"Danger will find them."

Season 3 Plot

In an epic final season, the Robinsons' survival instincts kick into hyperdrive as they race to reunite and protect Alpha Centauri from a robot invasion.

Lost in Space Season 3 aired on December 1st, 2021.

Watch 'Lost in Space' Season 3 Online

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Season 3 Episodes

62

1. Three Little Birds

December 1st, 2021 55 min

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.

67

2.

December 1st, 2021 48 min

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.

68

3. The New Guy

December 1st, 2021 50 min

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

70

4. Nothing Left Behind

December 1st, 2021 40 min

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

66

5. Stuck

December 1st, 2021 39 min

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.

70

6. Final Transmission

December 1st, 2021 41 min

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

69

7. Contingencies on Contingencies

December 1st, 2021 52 min

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.

70

8. Trust

December 1st, 2021 59 min

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.

All Seasons

Season 3

Season 3

Dec 1, 2021
Season 2

Season 2

Dec 24, 2019
Season 1

Season 1

Apr 12, 2018
Specials

Specials

Jun 4, 2019