School should be the safest place in the world. Not this winter. DCI Michael Yorke faces his most harrowing case yet. When 12-year-old Paul disappears from school, Yorke's only clue is a pool of animal blood. Fearing the worst, he turns toward the most obvious suspect, recently released local murderer, Thomas Ray. But as the snow in Salisbury worsens, Ray's mutilated body is discovered, and Yorke is left with no choice but to journey into the sinister heart of a demented family that has plagued the community for generations. Can he save the boy? Or will the evil he discovers change him forever?