[2] It was written by Michael Carreras based on the 1946 novel Stranger at Home, credited to actor George Sanders but ghostwritten by Leigh Brackett.

After an absence of four years, during which time he had been an amnesiac, the fourth man, Philip Vickers, returns home after regaining his memory.

Any one of the remaining men could be a suspect as Job Crandall, Bill Saul and Harry Bryce have all been interested in Philip's attractive 'widow', Angie.

The Monthly Film Bulletin wrote: "This confused and unconvincing murder mystery is so spattered with red herrings as to be almost incomprehensible.

"[5] The New York Times wrote, "A THIRD-RATE British-made whodunit called The Unholy Four, featuring Paulette Goddard and a nondescript cast ... A few more fly-by-nights like this Lippert presentation, produced and written by Michael Carreras, and the still-shapely Miss Goddard may find herself collecting the pieces of a career.