Goofs:
Continuity: The arrangement of Mrs Moncaster's tumblers on the bar when she declares she's only had one drink changes between shots. (more)

Trivia:
Pre-release publicity material lists Reginald Barlow cast as "Dr. Phillips", scripted as a specialist whom "Dr. Glendon" privately consults after being afflicted with "lycanthrophobia"; this detail, however, was bypassed in the finished production (if indeed it was ever filmed at all), most likely because it would be totally against the established "solitary" character of "Glendon" to do so. At any rate, Barlow was "re-assigned" the uncredited role of the caretaker Timothy. (more)

Filming Locations:
Universal Studios - 100 Universal City Plaza, Universal City, California, USA (more)

Quotes:
Mrs. Moncaster: Are you a single gentleman, sir?
Dr. Wilfred Glendon: Singularly single, madame. More single than I ever realized that it was possible for a human being to be.
(more)