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

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)

Roland Curram

Young Man in Sports Car (uncredited)

Paddi Edwards

Girl Electrician (uncredited)

Cornelia Frances

Girl in Sports Car Leaving Studio (uncredited)

Veronica Hurst

Miss Simpson - Jarvis' Secretary (uncredited)

Peggy Thorpe-Bates

Mrs. Partridge (uncredited)

Brian Worth

Assistant Director (uncredited)