| Actor | Joachim Fuchsberger (as Inspector Barth), Günther Stoll (as Professor Bascombe), Giancarlo Badessi (as Mr. Erickson), Vittorio Fanfoni (as Enrico's Landlord), Marco Mariani (as Father Webber), Antonio Casale (as Mr. Newton), Daniele Micheletti (as Mr. Bryant), Antonio Anelli (as Father Herbert), Rainer Penkert (as Mr. Leach, The Headmaster), Joe D'Amato (as CID Officer w / The Daily Telegraph ( Uncredited )), John Gayford (as Joseph Kane ( Uncredited )), Alfonso Giganti (as Man At Church ( Uncredited )), Joe Wadham (as Policeman ( Uncredited )) |
| Actress | Cristina Galbó (as Elizabeth Seccles), Karin Baal (as Herta Rosseni), Claudia Butenuth (as Brenda Pilchard), Camille Keaton (as Solange Beauregard), Maria Monti (as Mrs. Erickson), Pilar Castel (as Janet Bryant), Giovanna Di Bernardo (as Helen Edmonds), Emilia Wolkowicz (as Ruth Holden), Carla Mancini (as Susan, Student), Maria Michi (as Brenda's Mother ( Uncredited )) |
| Art Director | Gastone Carsetti |
| Cinematographer | Joe D'Amato |
| Composer | Ennio Morricone |
| Creator | Elisa Gut (as Costume Design), Dante Trani (as Make-up) |
| Director, Screen Story Writer, Screenwriter | Massimo Dallamano |
| Film Editor | Antonio Siciliano, Clarissa Ambach (as Uncredited) |
| Producer | Fulvio Lucisano, Leo Pescarolo, Horst Wendlandt (as Uncredited) |
| Production Company | Italian International Film, Clodio Cinematografica, Rialto Film Preben-Philipsen |
| Screen Story Writer, Screenwriter | Bruno Di Geronimo |
| Sound | Francesco Vernier, Peter Ruddis (as Uncredited) |
| Starring | Fabio Testi (as Enrico 'Henry' Rosseni) |
| Links | https://www.davinotti.com |
