Jimmy Hanley
Curly Minter
Valentine Dyall
Dr. Fell
Christine Silver
Mrs. Musgrave
Charles Hawtrey
Mike Atkinson
Laurence Naismith
Editor
Leslie Daniels
JJ
Merle Tottenham
Alice
Constance Smith
Molly Nusgrave
Aubrey Dexter
Harding
Reginald Dyson
Sergeant Cranbourne
John Clifford
Atkinson
Stuart Saunders
Porter
Cyril Conway
Dr. Mansfield
Charles Houston
Tom
Harriet Petworth
Matron
Charles Mander
P.C. Smith
H. Hamilton Earle
Orderly
F.A. Williams
Butler
Archie Callum
Night Watchman
Frank Spencer
Original Music Composer
Cedric Williams
Director of Photography
Godfrey Grayson
Director
Godfrey Grayson
Screenplay
John Gilling
Screenplay
Myra Cullimore
Costume Design
Anthony Hinds
Producer
Frank Spencer
Conductor
Monica Hustler
Hairstylist
Philip Leakey
Makeup Artist
James Needs
Editor
Denis Wreford
Art Direction
Margery Allingham
Radio Play
Jimmy Sangster
Assistant Director
Prudence Sykes
Casting
Renée Glynne
Continuity
Edgar Vetter
Sound Recordist
Alfred Cox
Negative Cutter
Peter Bryan
Camera Operator
Arthur Barnes
Production Manager