On the estate of a very wealthy man, an escort is cruelly murdered at the hands of a cold and determined assassin. The investigations lead Coliandro to confront the world of high class prostitution.

During the security service at the city stadium, Coliandro and agent Balboni arrest an ultra who had tried to stab a policeman: terrified of ending up in prison, the boy collaborates and provides the policemen with some important information.