Mark Terzi goes to Genoa to take on the case of a serial killer who calls himself "The Sphinx".
Commissario Mark Terzi
Il commedator Benzi
Ghini
Angela Frizzo
Morini
Giornalista
Franca Frizzo
Il Questore Spaini
Bernardi
Mario Borelli
Ragioniere di Ghini
Dr. Marchi
Judge Guglielmi
Colantuoni
Maria Clerici
Tommasi
Sports Club Director
Girl on the yacht
Ghini's Henchman (uncredited)
