Mattie can't remember a time before she and William lived alone on a mountain
together. She must never make him upset. But when Mattie discovers the mutilated
body of a fox in the woods, she realizes that they're not alone after all. There's
something in the woods that wasn't there before, something that makes strange
cries in the night, something with sharp teeth and claws. When three strangers
appear on the mountaintop looking for the creature in the woods, Mattie knows their
presence will anger William. Terrible things happen when William is angry.