Where can I watch “Star Trek” 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).

Do I need to watch earlier episodes before “The Cloud Minders”?

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

Watch Star Trek Season 3 Episode 21 Online

“The Cloud Minders” — Watch "Star Trek" Season 3 Episode 21 online in HD for free. Check streaming providers, cast, and episode details.

Feb 28, 1969 Season 3 Episode 21 51 min TV-PG

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Star Trek Season 3

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Where can I watch "The Cloud Minders" online?

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Season 3 Episode 21 — Aired on Feb 28, 1969 • runs about 51 minutes.

Directed by Jud Taylor.

Written by Oliver Crawford, David Gerrold.

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 21 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

Captain Kirk races against time to acquire plague-fighting minerals from a world in the midst of a civil uprising against a grievous social class disparity.