Trailer
Cast
Leigh McCloskey
Mark Elliot
Alida Valli
Carol
Feodor Chaliapin Jr.
Professor Arnold / Dr. Varelli
Filippo Perego
Tenant in New York Building (uncredited)
Irene Miracle
Rose Elliot
Veronica Lazăr
Nurse
Gabriele Lavia
Carlo
Leopoldo Mastelloni
John, the Butler
Paolo Paoloni
Music Teacher
Fulvio Mingozzi
Cabdriver
Dario Argento
Narrator (voice) (uncredited)
Daria Nicolodi
Elise Stallone Van Adler
Sacha Pitoëff
Kazanian
Eleonora Giorgi
Sara
Ania Pieroni
Musical Student
Ettore Martini
Burning Building Cop (uncredited)
Corinne Dunne
Tenant in New York Building (uncredited)