[citation needed] The program was broadcast on NBC from May 1960 to September 1960[1] as a summer replacement for The Dinah Shore Chevy Show[2] with Walter Slezak as host, except for the last three episodes, which had Vincent Price as host.
The episodes with Slezak as host were re-run with the title Sunday Mystery Hour from July 1961 to September 1961[1] (sustained by various "participating" advertisers).
Featured actors included Robert Culp, Dane Clark, Agnes Moorehead, Richard Carlson, Janet Blair, and James Whitmore.
[citation needed] A 1960 episode, "Enough Rope", was the first appearance of the fictional character Columbo, who would go on to star in his own show.
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