| Person | Type | Job | Role(s) |
|---|---|---|---|
 A.W. Watkins | Crew | Sound | Recording Supervision |
 Agatha Christie | Crew | Writing | Novel |
 Alf Joint | Crew | Crew | Stunts |
Ben Arbeid | Crew | Production | Producer |
David Pursall | Crew | Writing | Screenplay |
David Tomblin | Crew | Directing | Assistant Director |
Desmond Dickinson | Crew | Camera | Director of Photography |
 Frank Tashlin | Crew | Directing | Director |
Harry Gillam | Crew | Camera | Camera Operator |
 Irene Howard | Crew | Production | Casting |
Jack Seddon | Crew | Writing | Screenplay |
John Grover | Crew | Editing | Assistant Editor |
John Victor-Smith | Crew | Editing | Editor |
Lawrence P. Bachmann | Crew | Production | Producer |
Ron Goodwin | Crew | Sound | Original Music Composer, Conductor |
Stuart Freeborn | Crew | Costume & Make-Up | Makeup Artist |
William C. Andrews | Crew | Art | Art Direction |
Fred Turtle | Crew | Sound | ADR & Dubbing |
Sash Fisher | Crew | Sound | Sound Recordist |
Dennis Fraser | Crew | Camera | Grip |
Hardy Amies | Crew | Costume & Make-Up | Costumer |
Jake Wright | Crew | Production | Unit Manager |
Albert Becket | Crew | Production | Production Manager |
Terry Cole | Crew | Camera | Focus Puller |
Bill Creed | Crew | Sound | Sound Editor |
Tony Tweedale | Crew | Crew | Unit Publicist |
 Alison Seebohm | Cast | Miss Sparks | |
 Anita Ekberg | Cast | Actress | Amanda Beatrice Cross |
Anthony Lang | Cast | Undertaker (uncredited) | |
 Austin Trevor | Cast | Actor | Judson |
 Clive Morton | Cast | Actor | Mister K |
 Cyril Luckham | Cast | Actor | Sir Carmichael Clarke |
 David Lodge | Cast | Actor | Sergeant |
 Drewe Henley | Cast | Actor | Bowling Alley Attendant (uncredited) |
Grazina Frame | Cast | Actress | Betty Barnad |
 Guy Rolfe | Cast | Actor | Duncan Doncaster |
 James Villiers | Cast | Actor | Franklin |
 John Bennett | Cast | Actor | Waiter (uncredited) |
 Julian Glover | Cast | Actor | Don Fortune |
 Margaret Rutherford | Cast | Actress | Miss Jane Marple (uncredited) |
 Maurice Denham | Cast | Actor | Japp |
 Patrick Newell | Cast | Actor | Cracknell |
 Richard Wattis | Cast | Actor | Wolf |
 Robert Morley | Cast | Actor | Hastings |
 Roger Avon | Cast | Actor | Detective Sergeant (uncredited) |
 Roy Lansford | Cast | Man on Airport Escalator (uncredited) | |
Sally Douglas | Cast | Glamorous Girl in Gaming Club (uncredited) | |
 Stringer Davis | Cast | Actor | Mr. Stringer (uncredited) |
 Tony Randall | Cast | Actor | Hercule Poirot |
 Windsor Davies | Cast | Actor | Dragbot |
 Sheila Allen | Cast | Actress | Lady Diane |
George Hilsdon | Cast | Actor | Gaming Club Patron (uncredited) |
 Victor Harrington | Cast | Actor | Police Escort (uncredited) |
 Sheila Reid | Cast | Actress | Mrs. Fortune |
Walter Henry | Cast | Actor | Police Escort (uncredited) |
Jack Dearlove | Cast | Policeman (uncredited) | |
Jeff Silk | Cast | Actor | Motorcycle Cop (uncredited) |
Graham Tonbridge | Cast | Undertaker (uncredited) | |
Charlie Bird | Cast | Taxi Driver (uncredited) | |
Jack Silk | Cast | Actor | Motorcycle Cop (uncredited) |
Eden Fox | Cast | Man Waiting for Bus (uncredited) | |
 Emile Stemmler | Cast | Actor | Waiter (uncredited) |
John Tatham | Cast | Police Detective (uncredited) | |
Fred Machon | Cast | Policeman (uncredited) | |
Pauline Chamberlain | Cast | Actress | Gaming Club Patron (uncredited) |
Robin Burns | Cast | Undertaker (uncredited) | |
Lola Morice | Cast | Actress | Passerby (uncredited) |
| Person | Type | Job | Role(s) |
