| Person | Type | Job | Role(s) |
|---|---|---|---|
 A.W. Watkins | Crew | Sound | Sound Supervisor |
 Agatha Christie | Crew | Writing | Novel |
Austin Dempster | Crew | Camera | Camera Operator |
David D. Osborn | Crew | Writing | Screenplay |
David Pursall | Crew | Writing | Screenplay |
 Douglas Hickox | Crew | Directing | Assistant Director |
Eddie Knight | Crew | Costume & Make-Up | Makeup Artist |
Ernest Walter | Crew | Editing | Editor |
Geoffrey Faithfull | Crew | Camera | Director of Photography |
George H. Brown | Crew | Production | Producer |
 George Pollock | Crew | Directing | Director |
Harry White | Crew | Art | Art Direction |
J.B. Smith | Crew | Sound | Sound Recordist |
Jack Seddon | Crew | Writing | Screenplay |
Jan Darnley-Smith | Crew | Production | Production Manager |
Ron Goodwin | Crew | Sound | Original Music Composer, Conductor |
Tom Howard | Crew | Crew | Special Effects |
Pearl Orton | Crew | Costume & Make-Up | Hairdresser |
Cyril Swern | Crew | Sound | Sound Recordist |
Norman Hargood | Crew | Camera | Still Photographer |
Felix Evans | Crew | Costume & Make-Up | Wardrobe Master |
Robert Carrick | Crew | Sound | Sound Editor |
Beryl Booth | Crew | Directing | Continuity |
 Arthur Kennedy | Cast | Actor | Paul Quimper |
Barbara Leake | Cast | Actress | Helen Stainton |
 Charles Tingwell | Cast | Actor | Inspector Craddock |
 Conrad Phillips | Cast | Actor | Harold Ackenthorpe |
Gerald Cross | Cast | Actor | Albert Ackenthorpe |
 Gordon Harris | Cast | Actor | Bacon |
 James Robertson Justice | Cast | Actor | Luther Ackenthorpe |
 Joan Hickson | Cast | Actress | Mrs. Kidder |
 Margaret Rutherford | Cast | Actress | Miss Jane Marple |
Michael Golden | Cast | Actor | Hillman |
 Muriel Pavlow | Cast | Actress | Emma Ackenthorpe |
 Peter Butterworth | Cast | Actor | Ticket Collector |
 Richard Briers | Cast | Actor | 'Mrs Binster' |
 Ronald Howard | Cast | Actor | Brian Eastley |
Ronnie Raymond | Cast | Actor | Alexander Eastley |
 Stringer Davis | Cast | Actor | Jim Stringer |
 Thorley Walters | Cast | Actor | Cedric Ackenthorpe |
 Lucy Griffiths | Cast | Actress | Lucy |
Nadia Pavlova | Cast | Murder Victim (uncredited) | |
| Person | Type | Job | Role(s) |
