Riccardo Freda
Director
Edgar Wallace
Novel
Gábor Pogány
Director of Photography
Gianbattista Mussetto
Story
Oreste Coltellacci
Producer
Paul Hengge
Screenplay
Anna Amedei
Editor
Romano Migliorini
Story
Nora Orlandi
Original Music Composer
Luciano Spadoni
Production Design
Jutta Hering
Editor
Lucio Fulci
Story
Riccardo Freda
Screenplay
Klaus Kinski
John Alexander
Christiane Krüger
Christine
Günther Stoll
Inspektor Steevens
Annabella Incontrera
Liz
Margaret Lee
Helen Alexander
Sydney Chaplin
Mr.Brown
Barbara Nelli
Alice
Ignazio Dolce
Carlo Marcolino
Servant
Gastone Pescucci
Peter
Luciano Spadoni
Inspector Gordon
Claudio Trionfi
Bedy Moratti
(uncredited)
Fulvio Pellegrino
Policeman (uncredited)
Domenico Ravenna
Spectator at horse race (uncredited)
Alfred Vohrer
Edgar Wallace (voice) (archive footage) (uncredited)
Alice Arno
(hardcore inserts - French 1976 version)
