Fox 2000 has acquired the film rights to Douglas Preston and Mario Spezi’s best-selling book The Monster of Florence, with George Clooney attached to star. Chris McQuarrie is writing the screenplay with his Valkyrie co-writer Nathan Alexander. Tom Cruise was originally slated to star when the picture was at United Artists. Preston and Spezi’s book is an investigation into the murderer (or murderers) known as Il Mostro, who killed more than a dozen people from the late 1960′s to the mid-1980′s without being caught. In the course of their digging, Preston, who had moved with his family to a villa in Florence, and Spezi, an Italian crime journalist, were themselves then investigated by the police.