As if I didn’t have enough books, here is another one: The Monsters of Florence by Douglas Preston and Mario Spezi. The book centers around a group of murder perpetrated by a serial killer in the Italian town in the 1960’s. As to date nobody has been caught in relation to the crimes. Douglas Preston only learned about the murders after he moved himself and his family there to fulfill a life-long dream of his of living in the Italian city. It also seems that the book has been bought and in pre-production to be filmed starring Tom Cruise. Source