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