After losing her hand in a tragic accident, Rachel is plagued by vivid nightmares of a hollow tree, and a hand reaching from it, begging her for help. Terrified that she is going mad, Rachel experiences phantom sensations of leaves, trees, and finally a hand that grasps hers and pulls a young woman into Rachel's world. She has no idea of who she is, but Rachel can't help but think of the local legend of Oak Mary, the corpse of a woman found hidden in a hollow tree, and who was never identified. Three myths have grown up around the body; was she a spy, a prostitute or a murdered gypsy? Rachel is desperate to learn the truth, but darker forces are at work. For a rule has been broken, and Mary is in a world where she doesn't belong...