Lost in Space 2x8 Unknown 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 While Maureen leads a mutiny, Hastings visits John to deliver an ultimatum, and Penny tries to convince Will that his Robot has changed.