Un detective
- Tahun: 1969
- Negara: Italy
- Genre: Crime, Drama
- Studio: Fair Film
- Kata kunci: based on novel or book, blackmail, illegal drugs
- Pengarah: Romolo Guerrieri
- Pelakon: Franco Nero, Florinda Bolkan, Adolfo Celi, Delia Boccardo, Zuzana Martinková, Renzo Palmer