Full Credits
42 members

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
22 members
Basil Dearden
Director
Tilly Day
Continuity
David W. Orton
Assistant Director
Janet Green
Writer
Michael Relph
Producer
Douglas Pierce
Production Manager
Earl St. John
Executive Producer
H. A. R. Thomson
Camera Operator
Harry Waxman
Director of Photography
Philip Green
Music
Arthur Ridout
Sound Editor
Harry Fairbairn
Sound Assistant
John Dankworth
Musician
Bill Daniels
Sound Recordist
Dudley Messenger
Sound Recordist
Carmen Dillon
Art Direction
Dickie Bamber
Standby Property Master
Julie Harris
Costume Design
W.T. Partleton
Makeup Artist
John D. Guthridge
Editor
Arthur Alcott
Production Controller
Lukas Heller
Additional Dialogue