Dr Ruth Galloway is flattered when she receives a letter from Italian archaeologist Dr Angelo Morelli, asking for her help. He's discovered a group of bones in a tiny hilltop village near Rome but doesn't know what to make of them. It's years since Ruth has had a holiday, and even a working holiday to Italy is very welcome!

So Ruth travels to Castello degli Angeli, accompanied by her daughter Kate and friend Shona. In the town she finds a medieval shrine and a dark secret involving the war years and the Resistance. To her amazement she also finds Harry Nelson, who is enduring a terrible holiday at a resort nearby. But there is no time to overcome their mutual shock - the ancient bones spark a modern murder, and Ruth must discover what secrets there are in Castello degli Angeli that someone would kill to protect