Created by Hubbell Robinson for Revue Studios (later purchased by Universal) and produced by Canadian Fletcher Markle, William Frye, and Maxwell Shane, writers for the series included Robert Bloch, adapting his own stories including "The Weird Tailor".
Karloff acted in several of the episodes alongside guest stars including William Shatner ("Star Trek"), Scott Marlowe, Judson Pratt, Leslie Nielsen ("Forbidden Planet"), Mary Tyler Moore, Elizabeth Montgomery ("Bewitched"), Rip Torn, Richard Chamberlain, Cloris Leachman, Robert Vaughn ("The Man From U.N.C.L.E."), John Carradine and Ursula Andress. Other notable performers included Dayton Lummis as 'Clarence' in "The Cheaters" (1960) and Laura Craig in "Mr. George" (1961).
In his book "Danse Macabre", author Stephen King, aside from admitting that his best stories were cribbed from EC horror comics of the 1950's, also suggests that "Thriller" was the best TV series of its kind.
Gold Key Comics initially published a comic book version of "Thriller", eventually changing the title to "Boris Karloff Tales of Mystery", publishing until the 1980's. Dark Horse Comics also published a hardcover reprint of the comic book series in 2009.
The entire remastered TV series will be released as a deluxe collector's box set containing all 67 episodes on 14 DVDs, with extensive special features including audio commentaries.
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