| Person | Type | Job | Role(s) |
|---|---|---|---|
 Anthony Shaffer | Crew | Writing | Screenplay, Theatre Play |
 David Middlemas | Crew | Production | Associate Producer |
Don Sharpe | Crew | Sound | Sound Editor |
Edgar J. Scherick | Crew | Production | Executive Producer |
Elaine Schreyeck | Crew | Directing | Continuity |
Frank Ernst | Crew | Production | Production Manager |
Gary Hughes | Crew | Sound | Music Arranger |
George Whitear | Crew | Camera | Still Photographer |
Graham V. Hartstone | Crew | Sound | Sound Re-Recording Mixer |
 John Addison | Crew | Sound | Original Music Composer, Music Arranger, Conductor |
John Furniss | Crew | Costume & Make-Up | Costume Design |
John Jarvis | Crew | Art | Set Decoration |
John W. Mitchell | Crew | Sound | Sound Recordist |
 Joseph L. Mankiewicz | Crew | Directing | Director |
 Ken Adam | Crew | Art | Production Design |
Ken Barker | Crew | Sound | Sound Recordist |
 Oswald Morris | Crew | Camera | Director of Photography |
 Peter Lamont | Crew | Art | Art Direction |
Richard Marden | Crew | Editing | Editor |
Tom Smith | Crew | Costume & Make-Up | Makeup Artist |
Kip Gowans | Crew | Directing | Assistant Director |
Jimmy Turrell | Crew | Camera | Camera Operator |
Morton Gottlieb | Crew | Production | Producer |
Joan White | Crew | Costume & Make-Up | Hairstylist |
Robin Demetriou | Crew | Crew | Chef |
Mary Kessel | Crew | Editing | Assistant Editor |
Allan B. Schwartz | Crew | Production | Production Executive |
Les Hillman | Crew | Crew | Special Effects |
 Alec Cawthorne | Cast | Inspector Doppler | |
Eve Channing | Cast | Marguerite Wyke | |
John Matthews | Cast | Actor | Detective Sergeant Tarrant |
 Laurence Olivier | Cast | Actor | Andrew Wyke |
 Michael Caine | Cast | Actor | Milo Tindle |
Teddy Martin | Cast | Police Constable Higgs | |
| Person | Type | Job | Role(s) |
