Where can I watch “Lost in Space” Season 3 Episode 20 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

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Watching earlier episodes in season 3 helps you follow the plot and character arcs leading into this episode.

Watch Lost in Space Season 3 Episode 20 Online

“Fugitives in Space” — Watch "Lost in Space" Season 3 Episode 20 online in HD for free. Check streaming providers, cast, and episode details.

Jan 31, 1968 Season 3 Episode 20 60 min TV-PG

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Lost in Space Season 3

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Season 3 Episode 20 — Aired on Jan 31, 1968 • runs about 60 minutes.

Directed by Ezra Stone.

Written by Robert Hamner.

Notable cast/guest names in this episode include Guy Williams, June Lockhart, Mark Goddard, Marta Kristen.

This page includes 1 official still(s) (when available) plus legal availability links.

Looking for “watch Lost in Space Season 3 Episode 20 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

Poor Don West is sent to a prison camp.....WITH Dr. Smith!

Don and Dr Smith are installing some equiptment, when Dr Smith comes across and alien prison escapee. The priosoner alien makes Dr Smith change jackets and then runs away. When the prison guards catch up with Dr Smith and Don, they arrest them for aiding an escape of a prisoner.