Cast
Cesar Romero
Philip 'Phil' O'Dell
Bernadette O’Farrell
Heather McMara
Lois Maxwell
Margaret 'Peggy' Maybrick
Geoffrey Keen
Christopher Hampden
Campbell Singer
Inspector Rigby
Alastair Hunter
Det. Sgt. Reilly
Mary Mackenzie
Marilyn Durant
Lloyd Lamble
Martin Sorrowby
Frank Birch
Boswell - Airport Manager
Wensley Pithey
Sid - Bartender
Reed De Rouen
Connors
Peter Swanwick
Smithers
Richard Johnson
Danny McMara - Hit-and-Run Victim
Lionel Harris
Allan Mellon
Betty Cooper
Dr. Campbell - Asylum Superintendent
Katie Johnson
(I)
(1878–1957)
Mad Mary - Old Inmate at Murder Scene
Stuart Nichol
Steve
Marguerite Brennan
Desk Clerk at Heather's Apartment
Robert Dorning
Airline Reservations Clerk (uncredited)
Josephine Douglas
Nurse at Glenhaven Sanatorium (uncredited)
Jack Howarth
Minor Role (uncredited)
Stuart Saunders
Police Sergeant (uncredited)
Dorinda Stevens
Girl at Film Studio (uncredited)
Larry Taylor
Hospital Attendant (uncredited)
Directing
Sam Newfield
Director
Renée Glynne
Script Supervisor
Writing
Lester Powell
Story
Orville H. Hampton
Screenplay
Art
C. Wilfred Arnold
Art Direction
Camera
Walter J. Harvey
Director of Photography
Moray Grant
Camera Operator
Production
Anthony Hinds
Producer
Michael Carreras
Casting
Costume & Make-Up
Philip Leakey
Makeup Artist
Editing
James Needs
Editor
Sound
Ivor Slaney
Music
Muir Mathieson
Music Director
Bill Salter
Sound