Jack Watling
Dennis Willows
Rona Anderson
Sallie Harbord
John Horsley
Peter Hastings
Russell Napier
Inspector Simmons
Kenneth Kent
Dr. Julian Cole
Mary Jones
Florence Cole
Alastair Hunter
Sgt. Thorpe
Joan Hickson
Miss Edinger
John Le Mesurier
Phinneas Tilliard
June Ashley
Madeline Tilliard
Hélène Burls
Mrs. James
Charles Hammond
Juror at Inquest (uncredited)
Edward French
Bit Part (uncredited)
Peter Gilmore
Bit Part (uncredited)
Arthur Gross
Bit Part (uncredited)
Pat Hagan
Police Officer at Inquest (uncredited)
Neil Hallett
Police Constable Guarding Hastings' Home (uncredited)
Humphrey Morton
Usher (uncredited)
Bartlett Mullins
Coroner (uncredited)
Richard Neller
Juror at Inquest (uncredited)
Dandy Nichols
Waitress (uncredited)
Alan Robinson
Porter (uncredited)
Hugh Stewart
Policeman (uncredited)
John Wilder
Police Officer at Inquest (uncredited)
Charles Saunders
Director
Doreen Montgomery
Writer
Jack Slade
Editor
James Wilson
Director of Photography
Fred A. Swan
Production Supervisor
Peter T. Davies
Sound Re-Recording Assistant
Joanna Busby
Continuity
Betty Baugh
Hairstylist
Peter Lamb
Clapper Loader
Michael Morris
Makeup Artist
Frank Chacksfield
Conductor
Nobby Smith
Focus Puller
Eric Boyd-Perkins
First Assistant Editor
Clive Nicholas
Producer
David Butcher
Art Direction
René Dupont
Second Assistant Director
Frank Chacksfield
Original Music Composer
A.E. Rudolph
Sound Recordist