Richard Werner aka Karl Meyer
Richard Harrison
Karl Maria van Beethoven
Adolfo Celi
Deborah Sands
Judi West
Professor Krohne
Gustavo D'Arpe
Alice - the nurse
Fabienne Fabre
Leonard 'Zio Mac' MacFitzroy
Nino Fuscagni
General Van Pelt
Enzo Fiermonte
The Young Nurse
Gislaine Barbot
The Red-haired Nurse
Anita Cortinovis
Morgue Employee (uncredited)
Salvatore Porcaro
Producer
Felice D'Alisera
Writer
Ottavio Jemma
Furio Colombo
Sergio Spina
Director
Original Music Composer
Sandro Brugnolini
Art Direction
Amedeo Fago
Director of Photography
Claudio Ragona