While maintaining order at the city stadium, Coliandro and Officer Balboni arrest a football fan who had tried to stab a policeman. Terrified by the thought of ending up in prison, the boy cooperates and provides the police with some important information.

Officer Gargiulo shows up at Coliandro's house in the middle of the night, drunk and with a bloody knife in his hand: the inspector tries to reconstruct what happened, but it doesn't seem easy.

The husband of a former professor from Coliandro is murdered inside the University of Bologna. The woman is accused of the murder because of her husband's constant escapades: could this really be true?

A young Muslim girl shows up at Coliandro's office to report her father's sudden and mysterious disappearance. Reluctantly, the inspector nevertheless decides to investigate the matter around town.