Not even the icy temperatures of a New England winter can match the bone-chilling scene of carnage discovered in the early morning hours at the chapel of Our Lady of Divine Light, where two nuns lie - one dead, one critically injured; victims of an unspeakably savage attacker. Mexaminer Maura Isles' autopsy of the dead woman, twenty-year-old Sister Camille, yields a shocking surprise.The disturbing case takes a stunning new turn when another woman is found murdered in an abandoned building, her features obliterated. Together, Isles and homicide detective Jane Rizzoli uncover an ancient horror that connects these terrible slaughters. As long-buried secrets come to light, Maura Isles finds herself drawn towards the heart of an investigation that strikes closer and closer to home, and toward the dawning revelation - too shattering to consider - of the killer's identity. This is the third Jane Rizzoli-novel.