Franco Gasparri as Commissario Mark Terzi

Lee J. Cobb as Il commedator Benzi

Nino Benvenuti as Ghini

Ely Galleani as Angela Frizzo

Spiros Focás as Morini

Andrea Aureli as Giornalista

Ida Meda as Franca Frizzo

Massimo Girotti as Il Questore Spaini

Roberto Caporali as Bernardi

Guido Celano as Mario Borelli

Francesco D'Adda as Ragioniere di Ghini

Tom Felleghy as Dr. Marchi

Edoardo Florio as

Archimede Muzi as

Gianni Ottaviani as Judge Guglielmi

Leonardo Severini as Colantuoni

Margherita Horowitz as Maria Clerici

Cesare Di Vito as Tommasi

Mauro Vestri as Sports Club Director

Carmen Russo as Girl on the yacht

Renato Basso Bondini as Ghini's Henchman (uncredited)