Mark Lewis
Karlheinz Böhm
Helen Stephens
Anna Massey
Milly
Pamela Green
Small Man (uncredited)
John Barrard
Shop Assistant on Film Set (uncredited)
Robert Crewdson
Det. Sgt. Miller (uncredited)
Nigel Davenport
Mark's Father - A.N. Lewis (uncredited)
Michael Powell
Lorraine the Model (uncredited)
Susan Travers
Dr. Rosen
Martin Miller
Det. Baxter (uncredited)
Keith Baxter
Clapper Boy (uncredited)
John Chappell
Young Man in Sports Car (uncredited)
Roland Curram
Vivian
Moira Shearer
Police Doctor (uncredited)
John Dunbar
Publicity Chief (uncredited)
Maurice Durant
Girl Electrician (uncredited)
Paddi Edwards
Girl in Sports Car Leaving Studio (uncredited)
Cornelia Frances
Miss Simpson - Jarvis' Secretary (uncredited)
Veronica Hurst
Lover in Garden (uncredited)
M. Le Compte
Mme. Le Compte
Mr. Peters - News Agent Shop Owner (uncredited)
Bartlett Mullins
Young Man Embracing Girl (uncredited)
Pete Murray
Mark's Stepmother (uncredited)
Margaret Neale
Mrs. Stephens
Maxine Audley
Mark as a Child (uncredited)
Columba Powell
P. Tate - Studio Cameraman (uncredited)
Guy Kingsley Poynter
Mark's Mother on Deathbed (uncredited)
Frankie Reidy
Store Detective (uncredited)
Alan Rolfe
Electrician #1 (uncredited)
Frank Singuineau
Mrs. Partridge (uncredited)
Peggy Thorpe-Bates
Policeman (uncredited)
Robert Vossler
Tony - Downstairs Lodger in Lewis' House (uncredited)
Brian Wallace
Assistant Director (uncredited)
Brian Worth
St John's Medic (uncredited)
Jack Carter
Dora
Brenda Bruce
Elderly Gentleman Customer
Miles Malleson
Arthur Baden
Esmond Knight
Don Jarvis
Michael Goodliffe
Chief Insp. Gregg
Jack Watson
Pauline Shields
Shirley Anne Field
Producer
Director
Presenter
Nat Cohen
Director of Photography
Otto Heller
Editor
Noreen Ackland
Original Music Composer
Brian Easdale
Screenplay
Leo Marks
Original Story
Art Direction
Arthur Lawson
Sound Recordist
C. C. Stevens
Sound Editor
Malcolm Cooke
Sound Designer
Gordon K. McCallum
Hairstylist
Pearl Orton
Sound Mixer
Makeup Artist
W.T. Partleton
Assistant Director
Ted Sturgis
Focus Puller
Jim Body
Construction Manager
Ronnie Udell
Production Manager
Alfred W. Marcus
Assistant Art Director
Ivor Beddoes
Derek V. Browne
Assistant Editor
Alma Godfrey
Second Assistant Director
Denis Johnson Jr
Third Assistant Director
Carl Mannin
Set Dresser
Don Picton
Stuart Levy
Production Assistant
Bill Paton
Associate Producer
Albert Fennell
Publicist
Bill Burnside
John Rushton
Music Director
Draughtsman
Maurice Pelling
Electrician
Vic Smith
Musician
Gordon Watson
Judith Coxhead
Choreographer
Tommy Linden
Camera Operator
Gerry Turpin
Still Photographer
Norman Gryspeerdt
Continuity
Rita Davison