A brutal killer is on the streets of Rome. He leaves no trace. And shows no mercy.A series of gruesome murders leaves the police force in Rome reeling, with no real clues or hard evidence to follow. Assigned to the case is Sandra Vega, a brilliant forensic analyst, struggling to come to terms with the crimes and her own past. Sandra's shared history with Marcus, a member of the ancient Penitenzeri - a unique Italian team, linked to the Vatican, and trained in the detection of true evil, means that the two are brought together again in the pursuit of a malignant killer.Soon Marcus and Sandra notice the emergence of a disturbing pattern running alongside the latest killings - and every time they think they have grasped a fragment of the truth, they are led down yet another terrifying path. A sensational new literary thriller from the bestselling author of The Whisperer, this novel captures the beautiful atmosphere of Rome and explores its dark and hidden secrets.