Nellie Cavendish has very good reasons to seek out her roots, and not only because she has no memory of her mother and hardly knew the father who left her upbringing to paid caregivers. In the eight years since her twenty-first birthday, very odd things have begun to happen. Crows gather near her wherever she goes, electronics short out when she touches them, and when she's upset -- really upset -- it storms. At first, she chalked up the unusual happenings to coincidence, but that explanation doesn't begin to cover the vivid nightmares that torment her. She can no longer pretend to ignore them. She has to find out the truth. And the only starting point she has is a mysterious letter from her father delivered ten years after his death, insisting she go to a town called Salem and risk her life to stop some unnamed evil. Before her thirtieth birthday.