Peter Neal
Bullmer
Anne
Detective Germani
Gianni
Tilde
Jane McKerrow
Elsa Manni
Girl on Beach
Detective Altieri
Christiano Berti
Maria Alboretto
Bullmer's secretary
Marion
Department Store Manager (as Enio Girolami)
Woman at Airport
John
Alboretto, the porter
Coroner (as Gianpaolo Saccarola)
Prostitute
Department Store Clerk
Narrator (Italian version) / Murderer's Hands (voice) (uncredited)
Elevator Repairman #1 (uncredited)
Man in Department Store (uncredited)
Man with Glasses (uncredited)
Traveller at Airport (uncredited)
Journalist at Airport (uncredited)
Det. Germani (voice) (uncredited)
Man at Party (uncredited)
Various (voice) (uncredited)
Anne (voice) (uncredited)
Man in White Coat (uncredited)
Maria's Boyfriend / Man Walking with Girl on Beach (uncredited)