While Rome is sweltering in the height of summer, a serial killer is on the loose. Sara Farnese is working in the Vatican library, when a man bursts in intent on showing her the contents of his bloodied bag, until a guard shoots him. But why was the man targeting Sara? Determined to find answers, Sara s path crosses with a young up-and-coming Roman detective, Nic Costa. He s determined to track down the dangerous killer behind this bizarre and brutal murder and to protect Sara from becoming the next victim . . .