Where can I watch “UFO” Season 1 Episode 10 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 1 helps you follow the plot and character arcs leading into this episode.

Watch UFO Season 1 Episode 10 Online

“The Square Triangle” — Watch "UFO" Season 1 Episode 10 online in HD for free. Check streaming providers, cast, and episode details.

Dec 9, 1970 Season 1 Episode 10 60 min TV-14

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UFO Season 1

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Season 1 Episode 10 — Aired on Dec 9, 1970 • runs about 60 minutes.

Directed by David Lane.

Written by Alan Pattillo.

Notable cast/guest names in this episode include Ed Bishop.

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

Looking for “watch UFO Season 1 Episode 10 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

"Unfortunately for them, an Alien came through that door instead of her husband." In the woods between Clare Cross and Lingbury, an injured Alien stumbles into a lonely cottage and is shot down by Liz Newton and her lover Cass Fowler. Liz and Cass are taken to SHADO HQ for questioning, but when Liz's husband arrives at the cottage, Paul Foster realises that the Alien's death was no accident!