Mark Elliot

Leigh McCloskey

Rose Elliot

Irene Miracle

Kazanian

Sacha Pitoeff

Sara

Eleonora Giorgi

Elise Stallone Van Adler

Daria Nicolodi

Kazanian

Sacha Pitoëff

The Nurse

Veronica Lazar

Carlo

Gabriele Lavia

Carol

Alida Valli

Varelli the Architect

Feodor Chaliapin

Professor Arnold / Dr. Varelli

Feodor Chaliapin Jr.

John, the Butler

Leopoldo Mastelloni

Musical Student

Anja Pieroni

Mater Lachrymarum

Ania Pieroni

Cook

James Fleetwood

Man

Rosario Rigutini

Music Teacher

Paolo Paoloni

Shadow

Ryan Hilliard

Taxi Driver

Fulvio Mingozzi

Bookbinder

Luigi Lodoli

Old Man

Rodolfo Lodi

Narrator (voice) (uncredited)

Dario Argento

Burning Building Cop (uncredited)

Ettore Martini

Tenant in New York Building (uncredited)

Corinne Dunne

Tenant in New York Building (uncredited)

Filippo Perego