Where can I watch “The Man from U.N.C.L.E.” Season 4 Episode 4 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 4 helps you follow the plot and character arcs leading into this episode.

Watch The Man from U.N.C.L.E. Season 4 Episode 4 Online

“The Prince of Darkness Affair (1)” — Watch "The Man from U.N.C.L.E." Season 4 Episode 4 online in HD for free. Check streaming providers, cast, and episode details.

Oct 2, 1967 Season 4 Episode 4 PG

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The Man from U.N.C.L.E. Season 4

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Season 4 Episode 4 — Aired on Oct 2, 1967.

Directed by Boris Sagal.

Written by Dean Hargrove.

Notable cast/guest names in this episode include Robert Vaughn, David McCallum, Leo G. Carroll, Barbara Moore.

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

Looking for “watch The Man from U.N.C.L.E. Season 4 Episode 4 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

Solo and Illya are assigned to investigate a mysterious ray from the sky that killed the inhabitants of an African village. They find expert safecracker and fugitive from justice Luther Sebastian (Bradford Dillman), now a leader of a cult called the Third Way, and enlist his help in their plan to break into to the safe of Parviz Kharmusi (John Dehner) and steal the thermal prism that powers that deadly ray. Solo runs into Annie Justin (Carol Lynley), who is looking for Sebastian, who framed her boyfriend. Azalea (Lola Albright) helps Solo escape from Annie, and takes him to Kharmusi. But Sebastian reveals he has stolen the prism for himself so he can put it into orbit and extort the world.