On screen
Cast
22 credited performers
Klaus Kinski
Dr. Francis Clay
Margaret Lee
Cheryl Hume
Rosalba Neri
Anne Palmieri
Artwork unavailable
Jane Garret
Mara
John Karlsen
Professor Osterman
Gioia Desideri
Ruth
Artwork unavailable
Giangiacomo Elia
The Gardener (as John Ely)
Monica Strebel
Nurse Helen
Fernando Cerulli
Chaffeur
Artwork unavailable
Sandro Rossi
Policeman
Giulio Baraghini
Policeman
Ettore Geri
Inspector
Artwork unavailable
Antonio Radaelli
Policeman
Carla Mancini
Nurse
Franco Marletta
Male Nurse
Artwork unavailable
Piero Nistri
Cheryl's Husband
Artwork unavailable
Daniela Di Bitonto
Patient
Enzo Spitaleri
Ruth's Husband
Marco Mariani
Male Nurse
Gilberto Galimberti
Policeman
Artwork unavailable
Rosanna Braida
Patient
Artwork unavailable
Lina Franchi
Nurse Killed with Scythe (uncredited)