Milan's chief prosecutor is killed when his car is pushed off a narrow mountain road, the city's mayor is shot by an assassin on the steps of his office building, and an abbot and his librarian are killed in a monastery. This occurs days before Chief Inspector Mauro Bruno, whose father is one of the victims, comes to Milan to arrange for the funeral. Suspicious by nature and generally acknowledged within the Polizia di Stato as being the best detective...