Based on a chilling true crime, The Monster of Florence follows the reopening of a cold case—a serial killer who terrorized Florence for two decades.

Marshal Guarnaccia's job with the Carabinieri usually involves restoring stolen handbags to grateful old ladies and lost cameras to bewildered tourists. So when he is assigned to work with the Florence police in trying to track down a vicious serial killer, he feels out of his league. The crimes he must try to understand are grotesque, the case materials harrowing.  To make matters worse, the Proc he must report to is Simonetti, the same man he knows drove an innocent man to suicide several years earlier in his blind quest for a conviction.