Anthony Franciosa

Peter Neal

Acting

John Saxon

Bullmer

Acting

Daria Nicolodi

Anne

Acting

Giuliano Gemma

Detective Germani

Acting

Christian Borromeo

Gianni

Acting

Mirella D'Angelo

Tilde

Acting

Veronica Lario

Jane McKerrow

Acting

Ania Pieroni

Elsa Manni

Acting

Eva Robin's

Girl on Beach

Acting

Carola Stagnaro

Detective Altieri

Acting

John Steiner

Christiano Berti

Acting

Lara Wendel

Maria Alboretto

Acting

Isabella Amadeo

Bullmer's secretary

Acting

Mirella Banti

Marion

Acting

Ennio Girolami

Department Store Manager (as Enio Girolami)

Acting

Monica Maisani

Acting

Marino Masé

John

Acting

Fulvio Mingozzi

Alboretto, the porter

Acting

Giampaolo Saccarola

Coroner (as Gianpaolo Saccarola)

Acting

Ippolita Santarelli

Prostitute

Acting

Francesca Viscardi

Acting

Dario Argento

Narrator (Italian version) / Murderer's Hands (voice) (uncredited)

Directing

Lamberto Bava

Elevator Repairman #1 (uncredited)

Directing

Michele Soavi

Maria's Boyfriend / Man Walking with Girl on Beach (uncredited)

Directing