The Alfred Hitchcock Hour "Memo from Purgatory" (1964)

Season 3 episode 10 of the series, written by Harlan Ellison and directed by Joseph Pevney, with James Caan, Lynn Loring, Walter Koenig, Tony Musante, Zalman King et al ( www.imdb.com/title/tt0394063/). Host Alfred Hitchcock. Original air date 21 December 1964.