| Person | Type | Job | Role(s) |
|---|---|---|---|
 Christopher Wicking | Crew | Writing | Dialogue |
 Edgar Allan Poe | Crew | Writing | Short Story |
George Provis | Crew | Art | Art Direction |
 Gordon Hessler | Crew | Directing | Director, Producer |
Harry Robertson | Crew | Sound | Original Music Composer |
Jimmy Evans | Crew | Costume & Make-Up | Makeup Artist |
John Coquillon | Crew | Camera | Director of Photography |
Lawrence Huntington | Crew | Writing | Screenplay |
Louis M. Heyward | Crew | Production | Executive Producer |
Max Benedict | Crew | Editing | Editor |
Pat Green | Crew | Production | Associate Producer |
Bobbie Smith | Crew | Costume & Make-Up | Hairdresser |
 Alister Williamson | Cast | Actor | Sir Edward Markham |
 Andreas Malandrinos | Cast | Actor | Baron (uncredited) |
Anne Clune | Cast | Actress | Prostitute (uncredited) |
Anthony Bailey | Cast | Actor | Talbot (uncredited) |
Arthur Howell | Cast | Actor | Fighting Man in Tavern (uncredited) |
 Barbara Kellerman | Cast | Actress | Dr. Neuhartt's Patient (uncredited) |
 Carl Rigg | Cast | Actor | Norton |
 Christopher Lee | Cast | Actor | Dr. J. Neuhartt |
 Colin Jeavons | Cast | Actor | Doctor (uncredited) |
 Danny Daniels | Cast | Actor | Witchdoctor |
 Eddie Powell | Cast | Actor | Fighting Man in Tavern (uncredited) |
 Godfrey James | Cast | Actor | Weller |
 Harry Baird | Cast | Actor | N'Galo |
