Full Credits
21 members

Laurence Payne
Norman Martell

Patricia Dainton
Helen Martell

Jane Griffiths
Peggy Hill

Edward Underdown
Dr. Peter Murdoch

John Arnatt
Supt. Ross

Humphrey Lestocq
Simmons, the Producer

Lucy Griffiths
Miss Potter
Olive Milbourne
Mrs. Booth

Arthur Hewlett
Marshall

Annette Kerr
Cinema cashier

Cleo Laine
Cleo

Dudley Moore
Rehearsal Pianist (Uncredited)
Sylvia Davis
Cinema sales girl (uncredited)

Max Faulkner
Det. Sgt. Fred Smith (uncredited)
Garard Green
Patrol car policeman (uncredited)
Arthur Howell
P.C. Williams (uncredited)
Richard Neller
Sleeping Man in Theater (uncredited)

Pat Ryan
Detective Examining Tape-Recorder (uncredited)

Stuart Saunders
Cinema manager (uncredited)
Arthur Skinner
Det. Sgt. Carter (uncredited)
John Tatham
Detective / Fingerprints Officer (uncredited)
19 members
Montgomery Tully
Director
Estelle Stewart
Continuity
David Tringham
First Assistant Director
Jane Baker
Theatre Play
Maurice J. Wilson
Screenplay
Montgomery Tully
Screenplay
Philip Baker
Theatre Play
Pat Marsden
Production Manager
Maurice J. Wilson
Producer
John Shinerock
Camera Operator
Walter J. Harvey
Director of Photography
Philip Martell
Music Director
Don Banks
Original Music Composer
Dick Smith
Sound Recordist
William Hutchinson
Art Direction
Evelyn Gibbs
Wardrobe Master
Richard Mills
Makeup Artist
Hilda Fox
Hairdresser
Jim Connock
Editor