The investigators of the 10th Tuscolano are investigating the beating death of a young man who was robbed in the street, but the evidence regarding the guilt of a Romanian from the neighborhood does not convince Commissioner Benvenuto, who will have to challenge the xenophobic feelings of the people in the neighborhood to bring the real culprit to justice. The investigations of the inspectors of the X Tuscolano focus on a triple homicide: a wealthy elderly couple and a robber found murdered in the couple's villa. The case becomes complicated when the main suspect, the couple's youngest son, is found murdered.