Cast & crew
The Black Sleep (1956)
Directed by Reginald Le Borg Written by John C. Higgins, Gerald Drayson Adams
Cast
| Patricia Blair | Laurie Munroe |
| Basil Rathbone | Sir Joel Cadman |
| Herbert Rudley | Dr. Gordon Ramsay |
| Akim Tamiroff | Odo the Gypsy |
| Phyllis Stanley | Daphne |
| George Sawaya | Sailor-Subject |
| Tor Johnson | Mr. Curry |
| Sally Yarnell | Female Subject |
| Lon Chaney Jr. | Dr. Munroe, aka Mungo |
| Bela Lugosi | Casimir |
| John Carradine | Bohemund |
| Peter Gordon | Sgt. Steele |
| Claire Carleton | Carmona Daly |
| Clive Morgan | Roundsman Blevins (uncredited) |
| Louanna Gardner | Angelina Cadman |
| John Sheffield | Det. Redford (uncredited) |
| Aubrey Schenck | Prison Coroner's Clerk (uncredited) |
Crew
| Howard W. Koch | Producer |
| John C. Higgins | Screenplay |
| Reginald Le Borg | Director |
| Les Baxter | Original Music Composer |
| Aubrey Schenck | Executive Producer |
| Ted Coodley | Makeup Artist |
| Gordon Avil | Director of Photography |
| Clarence Steensen | Set Decoration |
| Cherie Banks | Hairstylist |
| John F. Schreyer | Editor |
| Gerald Drayson Adams | Story |
| Jack Rabin | Visual Effects |
| George Bau | Makeup Designer |
| Louis DeWitt | Visual Effects |