Lost in Space 2x6 Severed Season 2 Season 1 10 EpisodesSeason 2 10 EpisodesSeason 3 8 Episodes 2x1 - Shipwrecked 2x2 - Precipice 2x3 - Echoes 2x4 - Scarecrow 2x5 - Run 2x6 - Severed 2x7 - Evolution 2x8 - Unknown 2x9 - Shell Game 2x10 - Ninety-Seven The fast-spreading contaminant leaves Penny, Smith and friends stranded in tight quarters. Will and Maureen set out with Adler to find the Robot.