Margaret Willow has never met an eleven-year-old as dangerous as Natalie Glasgow. Natalie spends her days comatose, but at night she prowls her mother's home, unnaturally strong and insatiably carnivorous. With doctors baffled, Natalie's mother reaches out to Margaret, an expert in the supernatural. But even Margaret is mystified and terrified by Natalie's condition. She's dying, and before she dies, she might kill someone. Has a demon clawed its...