Directed by
| Pete Walker | ||
Writing Credits
| Michael Armstrong | ... | (screenplay) |
| Earl Derr Biggers | ... | (suggested by the novel 'Seven Keys to Baldpate') |
| George M. Cohan | ... | (dramatization by) |
Cast (in credits order) verified as complete
| Vincent Price | ... | Lionel Grisbane | |
| Christopher Lee | ... | Corrigan | |
| Peter Cushing | ... | Sebastian Grisbane | |
| Desi Arnaz Jr. | ... | Kenneth Magee (as Desi Arnaz) | |
| John Carradine | ... | Lord Grisbane | |
| Sheila Keith | ... | Victoria | |
| Julie Peasgood | ... | Mary Norton | |
| Richard Todd | ... | Sam Allyson | |
| Louise English | ... | Diana | |
 |
Richard Hunter | ... | Andrew |
| Norman Rossington | ... | Station Master | |
| Rest of cast listed alphabetically: | |||
| Juba Kennerley | ... | Gentleman's Club Member (uncredited) | |
Produced by
| Jenny Craven | ... | associate producer |
| Yoram Globus | ... | producer (produced by) |
| Menahem Golan | ... | producer (produced by) |
Music by
| Richard Harvey | ||
Cinematography by
| Norman G. Langley | ... | director of photography (as Norman Langley) |
Editing by
| Robert C. Dearberg | ... | (as Robert Dearberg) |
Art Direction by
| Michael Pickwoad | ... | (as Mike Pickwoad) |
Makeup Department
| George Partleton | ... | makeup artist |
Production Management
| Jeanne Ferber | ... | production manager |
Second Unit Director or Assistant Director
| Paul Carney | ... | assistant director (as Paul Carnie) |
| Nick Godden | ... | assistant director |
| Brian Lawrence | ... | assistant director |
| Glynn Purcell | ... | assistant director |
Art Department
| Bert Gadsden | ... | property master |
Sound Department
| Michael Crowley | ... | dubbing editor (as Mike Crowley) |
| Tony Gould-Davis | ... | boom operator (as Tony Gould-Davies) |
| Richard King | ... | dubbing mixer |
| Peter O'Connor | ... | sound recordist |
| John Thurston | ... | sound assistant |
| Brian Trenerry | ... | assistant editor |
| Sarah Vickers | ... | assistant editor |
Camera and Electrical Department
| Ted Davis | ... | gaffer |
| Mike Metcalfe | ... | follow focus |
| Sarah Quill | ... | stills photographer |
| John Simmons | ... | camera operator (as John Simmonds) |
| Malcolm Smith | ... | camera grip |
| Ray Snooks | ... | chief electrician |
| Fraser Taggart | ... | camera loader |
Costume and Wardrobe Department
| Alan Flyng | ... | wardrobe |
| Polly Hamilton | ... | wardrobe |
