During a patrol, Coppola and his new driving partner, Persico, notice an abandoned car in front of a dilapidated building. Suspicious, the two police officers enter the building and find the body of a girl. The terrifying silence is broken by the rapid sound of footsteps. Federico tries to understand where they are coming from, but the killer, careful not to be seen, seriously wounds him and disappears into the darkness. The case involves the entire police station, shaken by the critical condition of the young officer. After the large cocaine seizure, the drug dealing squares of Spaccanapoli are empty. Our guys suspect that Malinconico is reorganizing, but they have no hold on anything to hold on to in order to restart the investigation. Gabriele, infiltrated in the Malinconico clan and Vitale's informant, suggests keeping an eye on a young drug dealer. Thanks to the valuable information, the inspector makes an important discovery.