Debut of Burt Mustin. The play ran on Broadway for 581 performances, from 23 March1949, through 12 August 1950. It starred Ralph Bellamy as Det. McLeod. Meg Mundy played his wife. Maureen Stapleton played Miss Hatch. Horace McMahon, Joseph Wiseman, Michael Strong, and Lee Grant re-enacted their stage roles in the movie.