Where can I watch “The Lost World” Season 3 Episode 21 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 The Lost World Season 3 Episode 21 Online

“Trapped” — Watch "The Lost World" Season 3 Episode 21 online in HD for free. Check streaming providers, cast, and episode details.

May 6, 2002 Season 3 Episode 21 44 min TV-PG

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The Lost World Season 3

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Season 3 Episode 21 — Aired on May 6, 2002 • runs about 44 minutes.

Directed by Catherine Millar.

Written by Guy Mullally.

Notable cast/guest names in this episode include Peter McCauley, Rachel Blakely, William Snow, Jennifer O'Dell.

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

Looking for “watch The Lost World Season 3 Episode 21 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

A peaceful day of exploration turns deadly when a sudden explosion traps Marguerite and Roxton in an underground chamber. Their only hope for escape is Challenger, but the same explosion has left him with no memory of who he is, or what has happened to his friends.

Meanwhile, a contest of friendly rivalry between Veronica and Finn leads to an enigmatic discovery at the Treehouse, as another memory from Veronica's childhood is literally uncovered.

Faced with certain death, Roxton and Marguerite reveal emotions best left buried, so that even if they do survive their ordeal, there's a chance their relationship will not.