Klaus Kinski
Dr. Sturges
Giacomo Rossi Stuart
Dr. von Ravensbrück - Walter's Father
Carla Mancini
Gertrude - The Maid
Ewa Aulin
Greta von Holstein
Luciano Rossi
Franz
Attilio Dottesio
Inspector Dannick
Fernando Cerulli
Professor Kempte
Cast of Death Smiles on a Murderer