Turn-of-the-century Naples. Salvatore Ruotolo and his wife are murdered and their bodies are found in different locations. Since the evidence points to a crime by the Neapolitan crime organization, the Camorra, fear and corruption cause serious hindrances to the investigation by police authorities. In charge is a young and courageous judge who, using evidence discovered by chance, tries to reconstruct the story of the double murder. The plot that the judge must unravel is very complicated.
| Directing | Luigi Zampa | Director |
| Writing | Ettore Giannini | Story |
| Writing | Francesco Rosi | Story |
| Writing | Suso Cecchi d'Amico | Screenplay |
| Writing | Ettore Giannini | Screenplay |
| Writing | Diego Fabbri | Co-Writer |
| Writing | Turi Vasile | Co-Writer |
| Writing | Luigi Zampa | Co-Writer |
| Production | Mario Gabrielli | Production Supervisor |
| Directing | Mauro Bolognini | First Assistant Director |
| Directing | Nanni Loy | First Assistant Director |
| Directing | Pietro Notarianni | First Assistant Director |
| Directing | Maiù Macorini | Script Supervisor |
| Sound | Ennio Sensi | Sound |
| Sound | Alberto Bartolomei | Sound |
| Camera | Aldo Scavarda | Camera Operator |
| Costume & Make-Up | Leandro Marini | Makeup Artist |
| Camera | Sandro Serafin | Assistant Camera |
| Costume & Make-Up | Gabriella Borzelli | Hairstylist |
| Costume & Make-Up | Marilù Carteny | Assistant Costume Designer |
| Art | Aldo Tommasini | Production Design |
| Art | Ugo Bloettler | Set Decoration |
| Costume & Make-Up | Maria De Matteis | Costume Design |
| Editing | Eraldo Da Roma | Editor |
| Sound | Enzo Masetti | Original Music Composer |
| Sound | Fernando Previtali | Conductor |
| Camera | Enzo Serafin | Director of Photography |
| Production | Paolo Moffa | Production Manager |