Karlheinz Böhm
Mark Lewis
Anna Massey
Helen Stephens
Moira Shearer
Vivian
Maxine Audley
Mrs. Stephens
Brenda Bruce
Dora
Miles Malleson
Elderly Gentleman Customer
Esmond Knight
Arthur Baden
Michael Goodliffe
Don Jarvis
Jack Watson
Chief Insp. Gregg
Shirley Anne Field
Pauline Shields
Pamela Green
Milly
John Barrard
Small Man (uncredited)
Robert Crewdson
Shop Assistant on Film Set (uncredited)
Nigel Davenport
Det. Sgt. Miller (uncredited)
Michael Powell
Mark's Father - A.N. Lewis (uncredited)
Susan Travers
Lorraine the Model (uncredited)
Martin Miller
Dr. Rosen
Keith Baxter
Det. Baxter (uncredited)
John Chappell
Clapper Boy (uncredited)
Roland Curram
Young Man in Sports Car (uncredited)
John Dunbar
Police Doctor (uncredited)
Maurice Durant
Publicity Chief (uncredited)
Paddi Edwards
Girl Electrician (uncredited)
Cornelia Frances
Girl in Sports Car Leaving Studio (uncredited)
Veronica Hurst
Miss Simpson - Jarvis' Secretary (uncredited)
M. Le Compte
Lover in Garden (uncredited)
Mme. Le Compte
Lover in Garden (uncredited)
Bartlett Mullins
Mr. Peters - News Agent Shop Owner (uncredited)
Pete Murray
Young Man Embracing Girl (uncredited)
Margaret Neale
Mark's Stepmother (uncredited)
Columba Powell
Mark as a Child (uncredited)
Guy Kingsley Poynter
P. Tate - Studio Cameraman (uncredited)
Frankie Reidy
Mark's Mother on Deathbed (uncredited)
Alan Rolfe
Store Detective (uncredited)
Frank Singuineau
Electrician #1 (uncredited)
Peggy Thorpe-Bates
Mrs. Partridge (uncredited)
Robert Vossler
Policeman (uncredited)
Brian Wallace
Tony - Downstairs Lodger in Lewis' House (uncredited)
Brian Worth
Assistant Director (uncredited)