The past interlaces with the present: the discovery of a mysterious yellowed photograph depicting a little girl will lead Christian and Jewish students to search for the truth. They undertake a journey through the memory of a painful past that is hard to forget, such as the memory of the raid on the Jewish ghetto of Rome.
When her social-climbing father is relocated from small-town North to his native Rome, 12-year-old Caterina enrolls to his old school, finding herself in an completely different environment where students rigidly divide themselves in subcultures based on social class and their parents' political affiliation.
A vicious serial sex killer is on the loose, and landscape gardener and shop-window outfitter Loris is the prime suspect, thanks to his unfortunate habit of getting caught in compromising situations (for which there is always a totally innocent explanation that the police fail to spot). Undercover policewoman Jessica is assigned by eccentric police psychologist Taccone to follow Loris and ...