Where can I watch “Star Trek” Season 3 Episode 1 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 Star Trek Season 3 Episode 1 Online

“Le Cerveau de Spock” — Watch "Star Trek" Season 3 Episode 1 online in HD for free. Check streaming providers, cast, and episode details.

Sep 20, 1968 Season 3 Episode 1 51 min TV-PG

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Star Trek Season 3

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Where can I watch "Le Cerveau de Spock" online?

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Season 3 Episode 1 — Aired on Sep 20, 1968 • runs about 51 minutes.

Directed by Marc Daniels.

Written by Gene L. Coon.

Notable cast/guest names in this episode include William Shatner, Leonard Nimoy, DeForest Kelley, James Doohan.

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

Looking for “watch Star Trek Season 3 Episode 1 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

Au cours d'une mission d'exploration dans le système Sigma Draconis, l'Enterprise est attaqué par un vaisseau inconnu qui, grâce à une technique très avancée, vole le cerveau de Spock. L'Enterprise poursuit le vaisseau jusqu'à la planète Sigma Draconis IV.