Released from jail, Nanni punches prison guard Stefano who has denounced him. In order to take revenge, Stefano suggests the suspicion that, during his absence, his wife has had business with the Count Paolo. A few days later, at night, a deadly ambush will be prepared. Based on the novel The Trap (1928) by Toscan Delfino Cinelli.
| Directing | Mario Soldati | Director |
| Writing | Mario Soldati | Screenplay |
| Writing | Delfino Cinelli | Novel |
| Writing | Mario Bonfantini | Screenplay |
| Writing | Emilio Cecchi | Screenplay |
| Writing | Delfino Cinelli | Screenplay |
| Writing | Enzo Giachino | Screenplay |
| Writing | Lucio De Caro | Screenplay |
| Sound | Giuseppe Rosati | Original Music Composer |
| Camera | Otello Martelli | Director of Photography |
| Camera | Massimo Terzano | Director of Photography |
| Editing | Marcella Benvenuti | Editor |
| Art | Gustav Abel | Production Design |
| Art | Amleto Bonetti | Production Design |
| Art | Paolo Reni | Art Direction |
| Costume & Make-Up | Rosi Gori | Costume Design |
| Production | Eugenio Fontana | Production Manager |
| Production | Franco Magli | Production Supervisor |
| Directing | Jone Tuzi | Assistant Director |
| Sound | Tullo Parmegiani | Sound |