Nigel Patrick
Superintendent Robert Hazard
Nigel Patrick
Superintendent Robert Hazard
Michael Craig
Inspector Phil Learoyd
Yvonne Mitchell
Mildred
Paul Massie
David Harris
Bernard Miles
Ted Harris
Olga Lindo
Mrs. Harris
Earl Cameron
Dr. Robbins
Gordon Heath
Paul Slade
Barbara Steele
Student
Peter Vaughan
Detective Whitehead (uncredited)
Yvonne Buckingham
Sapphire Robbins
Jocelyn Britton
Patsy
Robert Adams
Horace Big Cigar
Desmond Llewelyn
Police Constable
Fenella Fielding
Lingerie Shop Manageress
Susan Stranks
Student
Freda Bamford
Sgt. Cook
Rupert Davies
Ferris
Orlando Martins
Barman
Harry Baird
Johnnie Fiddle
Grace Arnold
Sapphire's Landlady
Thomas Baptiste
Man on the Street
Victor Brooks
Police Sgt.
Basil Dignam
Doctor Burgess
Dorothy Gordon
Lily
Nora Gordon
Newsagent's Wife
Lucy Griffiths
Johnnie Fiddle's Landlady
Vanda Hudson
Girl at Tulip Club
Dan Jackson
Nightclub Owner
Philip Lowrie
Student
Bartlett Mullins
Newsagent
Philip Ray
Mr. Young
Lloyd Reckord
Pianist in International Club
John Richardson
Student
Richard Vernon
Doctor at Crime Scene
Christopher Witty
Boy
Dolores Mantez
Student (International Club)
Anthony Singleton
Bit Part
Geremy Phillips
Youth
Joan Hooley
Woman in Street
Boscoe Holder
Dancer in Nightclub
George Curtis
Police Constable
Basil Dearden
Director
Janet Green
Writer
W.T. Partleton
Makeup Artist
Harry Waxman
Director of Photography
John D. Guthridge
Editor
H. A. R. Thomson
Camera Operator
Carmen Dillon
Art Direction
Julie Harris
Costume Design
Michael Relph
Producer
Philip Green
Music
Arthur Ridout
Sound Editor
David W. Orton
Assistant Director
Arthur Alcott
Production Controller
Tilly Day
Continuity
Lukas Heller
Additional Dialogue
Douglas Pierce
Production Manager
Earl St. John
Executive Producer
John Dankworth
Musician
Harry Fairbairn
Sound Assistant
Dickie Bamber
Standby Property Master
Bill Daniels
Sound Recordist
Dudley Messenger
Sound Recordist