Directed by
| Don Sharp | ||
Writing Credits
| Harry Spalding | ... | (written by) |
| George Langelaan | ... | (concept and characters) (uncredited) |
Cast (in credits order)
| Brian Donlevy | ... | Henri Delambre | |
| George Baker | ... | Martin Delambre | |
| Carole Gray | ... | Patricia Stanley | |
| Yvette Rees | ... | Wan | |
| Burt Kwouk | ... | Tai | |
| Michael Graham | ... | Albert Delambre | |
| Jeremy Wilkin | ... | Inspector Ronet (as Jeremy Wilkins) | |
| Charles Carson | ... | Inspector Charas | |
 |
Mary Manson | ... | Judith Delambre |
| Rachel Kempson | ... | Madame Fournier | |
| Warren Stanhope | ... | Hotel Manager | |
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Mia Anderson | ... | Nurse |
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Arnold Bell | ... | Porter |
| Rest of cast listed alphabetically: | |||
| Stan Simmons | ... | Heavyset Creature (uncredited) | |
Produced by
| Robert L. Lippert | ... | producer |
| Jack Parsons | ... | producer |
Music by
| Bert Shefter | ||
Cinematography by
| Basil Emmott | ... | director of photography |
Art Direction by
| Harry White | ||
Makeup Department
| Barbara Barnard | ... | hairdresser |
| John O'Gorman | ... | makeup artist |
Production Management
| Teresa Bolland | ... | production manager |
Second Unit Director or Assistant Director
| Gordon Gilbert | ... | assistant director |
| Alex Carver-Hill | ... | second assistant director (uncredited) |
Sound Department
| Jock May | ... | sound recordist |
| Clive Smith | ... | sound editor |
Special Effects by
| Harold Fletcher | ... | special effects makeup |
Camera and Electrical Department
| Frank Drake | ... | camera operator |
Editorial Department
| Colin Miller | ... | assistant editor |
| Robert Winter | ... | supervising film editor |
| Peter Boyle | ... | second assistant editor (uncredited) |
Music Department
| Johnny Pearson | ... | orchestrator |
| The Philharmonia Orchestra | ... | music player (as The New Philharmonia Orchestra of London) |
Script and Continuity Department
| Renée Glynne | ... | continuity (as Renee Glynne) |
Additional Crew
| Angela Cockill | ... | production secretary |
| Francis Rodker | ... | title designer |
| Maureen Newman | ... | production accountant (uncredited) |
