Search - Back to Bologna (Aurelio Zen Mystery)

I really enjoy mysteries set in foreign locations and this was no exception. The central character is senior police investigator Aurelio Zen, around whom the author has written a number of successful books. In this one, the police are faced with two shootings connected to the same gun, but whose victims seem to have nothing in common. How are the university students, the private investigator, the illegal alien, and the football team owner all part of the same mystery?