Lawrence P. Bachmann
Producer Ben Arbeid
Producer Frank Tashlin
Director

Tony Randall
Hercule Poirot Anita Ekberg
Amanda Beatrice Cross Robert Morley
Captain Hastings Maurice Denham
Inspector Japp Guy Rolfe
Dr. Duncan Doncaster Sheila Allen
Lady Diane James Villiers
Franklin Julian Glover
Don Fortune Grazina Frame
Betty Barnad Clive Morton
Mister X Cyril Luckham
Sir Carmichael Clarke Richard Wattis
Wolf

Desmond Dickinson
Director of Photography Agatha Christie
Novel David Pursall
Screenplay Jack Seddon
Screenplay Ron Goodwin
Original Music Composer John Victor-Smith
Editor Bill Creed
Sound Editor Sash Fisher
Sound Recordist Fred Turtle
ADR & Dubbing A.W. Watkins
Recording Supervision Harry Gillam
Camera Operator Terry Cole
Focus Puller