Slaughter Hotel

Klaus Kinski

Dr. Francis Clay

Rosalba Neri

Anne Palmieri

Jane Garret

Mara

Margaret Lee

Cheryl Hume

John Karlsen

Professor Osterman

Gioia Desideri

Ruth

Giangiacomo Elia

The Gardener (as John Ely)

Monica Strebel

Nurse Helen

Fernando Cerulli

Chaffeur

Giulio Baraghini

Policeman