Directed by
| Vernon Sewell | ... | (directed by) |
Writing Credits
| Peter Bryan | ... | (screenplay by) |
Cast (in credits order) verified as complete
| Peter Cushing | ... | Inspector Quennell | |
| Robert Flemyng | ... | Dr. Mallinger | |
| Wanda Ventham | ... | Clare Mallinger | |
| Vanessa Howard | ... | Meg | |
| David Griffin | ... | William | |
| Glynn Edwards | ... | Sergeant Allan | |
| William Wilde | ... | Britewell | |
| Kevin Stoney | ... | Granger | |
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John Paul | ... | Warrender |
| Russell Napier | ... | Landlord | |
| Roy Hudd | ... | Morgue Attendant | |
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Leslie Anderson | ... | Coachman |
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Simon Cain | ... | Gardener |
| Robert Cawdron | ... | Chief Constable | |
| Kenneth Colley | ... | James | |
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Beryl Cooke | ... | Housekeeper |
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Roy Evans | ... | 2nd Porter |
| Joan Ingram | ... | Cook | |
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David Lyell | ... | 2nd Student |
| John Scott Martin | ... | Snaflebum | |
| William Maxwell | ... | 1st Porter | |
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Michael Mundell | ... | 1st Student (as Mike Mundell) |
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Norman Pitt | ... | Police Doctor |
| Malcolm Rogers | ... | Dr. Elliott | |
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Drew Russell | ... | P.C. Smith |
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Honor Shepherd | ... | Senior Housemaid |
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Robin Wentworth | ... | Starkadder |
| Rest of cast listed alphabetically: | |||
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Arnold L. Miller | ... | Policeman (uncredited) |
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Paul Vernon | ... | Medical Student (uncredited) |
Produced by
| Arnold L. Miller | ... | producer (produced by) |
| Tony Tenser | ... | executive producer |
Music by
| Paul Ferris | ... | (music composed by) |
Cinematography by
| Stanley A. Long | ... | director of photography |
Editing by
| Howard Lanning | ||
Casting By
| Freddie Vale | ... | (uncredited) |
Art Direction by
| Wilfred Woods | ||
Makeup Department
| Rosemarie McDonald-Peattie | ... | make-up artist (as Rosemarie McDonald Peattie) |
| Henry Montsash | ... | hairdresser |
| Barbara Whittaker | ... | hairdresser (uncredited) |
Production Management
| Ricky Coward | ... | production manager |
Second Unit Director or Assistant Director
| George Pollard | ... | assistant director |
| Drummond Riddell | ... | second assistant director (uncredited) |
Art Department
| Len Harvey | ... | construction manager |
| Freda Pearson | ... | set dresser |
| Ron Bates | ... | carpenter (uncredited) |
| Tony Boon | ... | stagehand (uncredited) |
| Dave Clark | ... | plasterer (uncredited) |
| Bert Eversfield | ... | painter (uncredited) |
| Peter Joyce | ... | assistant art director (uncredited) |
| E. O'Sullivan | ... | rigger (uncredited) |
| Maurice Stewart | ... | props (uncredited) |
| Bill Tibbs | ... | production buyer (uncredited) |
| Jeff Woodbridge | ... | standby carpenter (uncredited) |
Sound Department
| Alan Hogben | ... | sound mixer |
| Dennis Lanning | ... | dubbing editor |
| Mike Tucker | ... | boom operator |
| Alan Lavender | ... | sound maintenance (uncredited) |
Special Effects by
| Roger Dicken | ... | special effects |
Camera and Electrical Department
| Jim Alloway | ... | focus puller |
| Norman Jones | ... | camera operator |
| Bob Cockburn | ... | grip (uncredited) |
| Alan Lavender | ... | camera operator: second unit (uncredited) |
| George Pimm | ... | electrician (uncredited) |
| Chris Reynolds | ... | clapper loader (uncredited) |
| Deryck Whittaker | ... | still photographer (uncredited) |
Costume and Wardrobe Department
| Marie Feldwick | ... | wardrobe |
Editorial Department
| Marion Curren | ... | assistant editor (uncredited) |
| Jonathan Morris | ... | assistant editor (uncredited) |
Music Department
| Paul Ferris | ... | music conducted by |
Script and Continuity Department
| Eve Wilson | ... | continuity |
Additional Crew
| Pat Rambaut | ... | production secretary (as Pat O'Donnell) |
| Tony Tenser | ... | presenter |
| Sandra Bloom | ... | secretary to producer (uncredited) |
| Vivien Duret | ... | production secretary (uncredited) |
| Arnold Fletcher | ... | production accountant (uncredited) |
| Frank Law | ... | publicist (uncredited) |