| Person | Type | Job | Role(s) |
|---|---|---|---|
 Albert Whitlock | Crew | Visual Effects | Matte Painter |
Anthony Carras | Crew | Editing | Editor |
Bartlett A. Carré | Crew | Production | Production Manager |
Daniel Haller | Crew | Art | Production Design, Art Direction |
 Edgar Allan Poe | Crew | Writing | Short Story |
Eve Newman | Crew | Sound | Music Editor |
Floyd Crosby | Crew | Camera | Director of Photography |
Harry Reif | Crew | Art | Set Decoration |
Jack Bohrer | Crew | Directing | Assistant Director |
James H. Nicholson | Crew | Production | Executive Producer |
Kay Rose | Crew | Sound | Sound Editor |
 Les Baxter | Crew | Sound | Original Music Composer |
Marjorie Corso | Crew | Costume & Make-Up | Costume Design |
Pat Dinga | Crew | Crew | Special Effects |
Ray Mercer | Crew | Visual Effects | Visual Effects |
 Richard Matheson | Crew | Writing | Screenplay |
 Roger Corman | Crew | Directing | Director, Producer |
 Samuel Z. Arkoff | Crew | Production | Executive Producer |
Ted Coodley | Crew | Costume & Make-Up | Makeup Artist |
Roy Meadows | Crew | Sound | Sound Recordist |
Richard M. Rubin | Crew | Art | Property Master |
Paul Rapp | Crew | Directing | Second Unit Director |
Frank Tanner | Crew | Camera | Still Photographer |
Ross Hahn | Crew | Art | Construction Coordinator |
Betty Crosby | Crew | Directing | Script Supervisor |
Al Simms | Crew | Sound | Music Coordinator |
Jack W. Cash | Crew | Production | Production Assistant |
Tom Matsumoto | Crew | Crew | Scenic Artist |
Robert Agnew | Crew | Production | Unit Manager |
 Antony Carbone | Cast | Actor | Doctor Leon |
 Barbara Steele | Cast | Actress | Elizabeth Barnard Medina |
 John Kerr | Cast | Actor | Francis Barnard |
 Luana Anders | Cast | Actress | Catherine Medina |
Lynette Bernay | Cast | Actress | Maria |
Mary Menzies | Cast | Isabella | |
Patrick Westwood | Cast | Actor | Maximillian |
 Randee Lynne Jensen | Cast | Actress | Extra (uncredited) |
 Vincent Price | Cast | Actor | Nicholas Medina / Sebastian Medina |
Charles Victor | Cast | Actor | Bartolome |
Larry Turner | Cast | Young Nicholas | |
| Person | Type | Job | Role(s) |
