Dr. Francis Clay

Klaus Kinski

Acting

Cheryl Hume

Margaret Lee

Acting

Anne Palmieri

Rosalba Neri

Acting

Mara

Jane Garret

Acting

Professor Osterman

John Karlsen

Acting

Ruth

Gioia Desideri

Acting

The Gardener (as John Ely)

Giangiacomo Elia

Acting

Nurse Helen

Monica Strebel

Acting

Chaffeur

Fernando Cerulli

Acting

Policeman

Sandro Rossi

Sound

Policeman

Giulio Baraghini

Acting

Inspector

Ettore Geri

Acting

Policeman

Antonio Radaelli

Acting

Nurse

Carla Mancini

Acting

Male Nurse

Franco Marletta

Acting

Cheryl's Husband

Piero Nistri

Acting

Patient

Daniela Di Bitonto

Acting

Ruth's Husband

Enzo Spitaleri

Acting

Male Nurse

Marco Mariani

Acting

Policeman

Gilberto Galimberti

Acting

Patient

Rosanna Braida

Acting

Nurse Killed with Scythe (uncredited)

Lina Franchi

Acting