Kadro (18)
Richard O'SullivanRoger Court
Alida ValliRoberta Gleukovitch
Eduardo CiannelliDr. Vivaldi
Trevor HowardMajor Roger Court
Richard BasehartJoe Hamstringer
Stephen MurrayBritish Consul in Venice
Arnoldo FoàCommissioner
Guido CelanoChief Constable
Helen GossUndetermined RoleGiorgio CostantiniPescovitchAngelo CecchelinLuzaNino VechinaFirst KillerArmando PapetteSecond KillerGiovanni KaruzThird KillerJoan ButterfieldMrs. HarringtonAlessandro PaulonMorganRemington OlmstedRamondoJacopo Tecchi