The Man from U.N.C.L.E. (1964–1968)
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The Prince of Darkness Affair: Part I 

Dr. Kharmusi, a criminal scientist, has developed a "thermal prism," which generates intense heat beams. UNCLE recruits Luther Sebastian, wanted for various crimes in 22 countries, because ... See full summary »


Boris Sagal


Dean Hargrove, Sam Rolfe (developer)




Episode complete credited cast:
Robert Vaughn ... Napoleon Solo
David McCallum ... Illya Kuryakin
Leo G. Carroll ... Alexander Waverly
Carol Lynley ... Annie Justin
Bradford Dillman ... Luther Sebastian
Lola Albright ... Azalea
John Dehner ... Dr. Parviz Kharmusi
John Carradine ... Old Man - Third-Way Priest
H.M. Wynant ... Hassan Aksoy
Roy Jenson ... Carl
Arthur Malet ... White Hunter
Robert Karnes ... Captain
Sid Haig ... Alex
Mort Thompson Mort Thompson ... Henchman
Barbara Moore Barbara Moore ... Lisa Rogers


Dr. Kharmusi, a criminal scientist, has developed a "thermal prism," which generates intense heat beams. UNCLE recruits Luther Sebastian, wanted for various crimes in 22 countries, because he designed the kind of safe where Kharmusi keeps the prism. Napoleon Solo infiltrates Kharmusi's base of operations as an amoral businessman while Illya Kuryakin and Sebastian work to steal the device. However, Annie, whose boyfriend was framed for murder by Sebastian, complicates matters. Written by Bill Koenig

Plot Summary | Add Synopsis

Plot Keywords:

death ray | mystic cult | See All (2) »







Release Date:

2 October 1967 (USA) See more »

Company Credits

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Technical Specs


| (DVD)

Sound Mix:

Mono (Westrex Recording System)


Color (Metrocolor)

Aspect Ratio:

1.33 : 1
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Did You Know?


The control console seen for the TV monitors in Dr. Kharmusi's security room happens to be the same one that was the O.B.I.T. machine in the Outer Limits. A funny looking "mixing bowl" shaped viewing screen was then attached to it then but is not used here. See more »


Edited into The Helicopter Spies (1968) See more »


The Man From U.N.C.L.E.
Composed by Jerry Goldsmith
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Frequently Asked Questions

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User Reviews

John Dehner and Bradford Dillman
8 April 2017 | by kevinolzakSee all my reviews

"The Prince of Darkness Affair" was the first of a pair of two part episodes from this fourth season, raising the stakes nicely from the previous season. This globe trotting adventure kicks off in East Africa, a village devastated by an intense heat ray generated by a 'thermal prism' designed by noted Persian scientist Dr. Parviz Kharmusi (John Dehner), who tries to roast Napoleon Solo and Illya Kuryakin without success. From there it's on to an island off the coast of Greece, where the mystic Third-Way cult resides in anticipation of their priest (John Carradine) finally speaking his first words in 20 years to signal their dominance over the earth. Felonious safecracker Luther Sebastian (Bradford Dillman), wanted in 22 different countries, has taken safe haven here but is recruited to infiltrate the carefully guarded Teheran estate of Dr. Kharmusi to break into his safe and recover the deadly laser. Complications include the meddlesome presence of Annie Justin (Carol Lynley), pretending to be Solo's wife, and Kharmusi's own spouse Azalea (Lola Albright), who also isn't what she appears to be. Boasting the highest budget of any series episode, its only fault being the fate of John Dehner's sly yet ultimately doomed character, leaving Luther Sebastian to carry on with Azalea in the concluding chapter, our two heroes and Annie set on a cliffhanging collision course with a torpedo (John Carradine's silent priest would also return).

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