Police Commissioner Verrazzano (Luc Merenda) is visited by charming Giulia Medici (Janet Agren) who claims that her brother, banker Valter Medici didn't commit suicide but was murdered. The investigation leads Verrazzano to dark secrets of loan sharks.
| Actor | Role |
|---|---|
 Luc MerendaCommissario Verrazzano | Commissario Verrazzano |
 Janet ÅgrenGiulia Medici | Giulia Medici |
 Patrizia GoriGiorgia | Giorgia |
 Luciana PaluzziRosy | Rosy |
 Chris AvramMarco Verelli | Marco Verelli |
| DDaniele DublinoCommissario Biagi | Commissario Biagi |
 Gloria PiedimonteNot listed | Not listed |
 Giacomo RizzoBrigadiere Baldelli | Brigadiere Baldelli |
 María BaxaKora Venier | Kora Venier |
 Isarco RavaioliNot listed | Not listed |
 Edmondo TieghiCivetta | Civetta |
 Attilio DottesioNotary Bruni | Notary Bruni |
 Artemio AntoniniRacketeer | Racketeer |
| LLina FranchiNot listed | Not listed |
 Angelo BoscariolButler (uncredited) | Butler (uncredited) |
 Omero CapannaRobber (uncredited) | Robber (uncredited) |