What could be more terrible and inhumane than ritual murders? Or are they not ritual?..FBI agent Mercy Kilpatrick has her own secret hideout - a small house in the wilderness of the Oregon forests. Here she can be herself and take a break from people and work. But one cold winter night, her solitude crumbles into dust. At the entrance to her shelter, Mercy meets a little girl running out of the thicket. She asks for help - her grandmother is bleeding. Mercy runs with her through the forest and there, in a hut among the trees, she discovers an old woman cut up with a knife. The dying woman whispers spells in an incomprehensible language. Mercy remembers that everyone in the area called this woman a witch...