Tom Conway, Private Investigator
Tom Conway
Helen Pascall
Mila Parély
Detective Sgt. Jessup
Thomas Heathcote
Inspector
Alan Rolfe
Marlowe
Roger Delgado
Heath
Reed De Rouen
Chelsea
Delphi Lawrence
Blonde
Christine Forrest
Jane, model with shoulder-length hair
Ann Hanslip
George
Davy Leon
A Seamstress
Dorothy Robson
Harry, the Night Watchman
Leo Phillips
Gina, a model
Naomi Chance
Stevenson
Robert Moore
Commissionaire
Denis Cowles
Chauffeur
John H. Watson
Vivian
Cleo Rose
Self - Singer-Pianist (uncredited)
Cab Kaye
Nightclub Patron (uncredited)
John Lynn
Fashion Show Attendee (uncredited)
Jack Mandeville
Policeman (uncredited)
Ernie Priest
Mr. Mercedes
Eric Pohlmann
Capt. Colin Simpson
Andrew Osborn
Detective Inspector MacLeod
Richard Wattis
Lady Marchant
Margaret Halstan
Mme. Fernande
Eileen Way
Eddie
Michael Ripper
Miss Betty, Showroom Mistress
Betty Cooper
Assistant Director
Jimmy Sangster
Director
Terence Fisher
Music Director
Ivor Slaney
Wardrobe Master
Molly Arbuthnot
Production Manager
Mickey Delamar
Dialogue Editor
Molly Terraine
Camera Operator
Len Harris
Screenplay
Jan Read
Producer
Michael Carreras
Director of Photography
Walter J. Harvey
Editor
Maurice Rootes
Art Direction
J. Elder Wills
Costume Design
Ben Pearson
Script Supervisor
Renée Glynne
Hairstylist
Nina Broe
Makeup Artist
Philip Leakey
Sound Recordist
George Burgess
Bill Salter
Original Music Composer