A psychopathic killer of university students is on the loose in Bologna. Rookie detective Grazia Negro is put in charge of this critical investigation, with only her gut instincts to guide her. She gets an unexpected breakthrough when she meets a young blind man who spends his days at home alone, listening to jazz and to the sounds of the city on his scanner. From the diverse perspectives of the detective, the blind man, and the assassin, Lucarelli, master of Italian noir, weaves a gripping thriller.