Cast & crew
Detective Belli (1969)
Directed by Romolo Guerrieri Written by Franco Verucci, Alberto Silvestri, Massimo D'Avak
Cast
| Franco Nero | Melvin Belli |
| Laura Antonelli | (uncredited) |
| Maurizio Bonuglia | Mino |
| Geoffrey Copleston | (uncredited) |
| Silvia Dionisio | Gabriella |
| Alfonso Giganti | (uncredited) |
| Marino Masé | (uncredited) |
| Vittorio Ripamonti | (uncredited) |
| Delia Boccardo | Bronson |
| Zuzana Martinková | Emmanuelle |
| Adolfo Celi | Fontana |
| Florinda Bolkan | Vera |
| Renzo Palmer | Baldo |
| Roberto Bisacco | Claudio |
| John Stacy | (uncredited) |
Crew
| Romolo Guerrieri | Director |
| Mario Cecchi Gori | Producer |
| Fred Bongusto | Original Music Composer |
| Ludovico Dentice | Novel |
| Marcello Malvestito | Editor |
| Roberto Gerardi | Director of Photography |
| Giantito Burchiellaro | Production Design |
| Robby Poitevin | Music Arranger |
| Franco Verucci | Screenplay |
| Alberto Silvestri | Screenplay |
| Franco Bruni | Assistant Camera |
| Guido Ortenzi | Sound |
| Renzo Genta | First Assistant Director |
| Serena Canevari | Script Supervisor |
| Gastone Di Giovanni | Camera Operator |
| Maurizio Maggi | Assistant Camera |
| Camillo Teti | Unit Manager |
| Francesco Malvestito | Assistant Editor |
| Renato Fiè | Unit Manager |
| Bruno Altissimi | Administration |
| Mario Della Torre | Assistant Costume Designer |
| Mario Morigi | Sound Mixer |
| Francesca Saitto | Assistant Production Design |
| Antonio Barone | Production Secretary |
| Luciano Luna | Production Manager |
| Luca Sabatelli | Costume Design |
| Franco Corridoni | Makeup Artist |
| Massimo D'Avak | Screenplay |
| Rosa Luciani | Hairstylist |