On her way home from college, 18 year old Rachel Kain vanishes from her truck. Two weeks later, a traffic officer finds her - soaked, exhausted, with intricate symbols carved into her skin. She claims to remember nothing, and there is no evidence to find her captors. Rachel comes back changed. She has always known of her sister's nightmares, but now they are terrifyingly real. There is a world beneath ours, and now Rachel and Renee are immersed in that world, fighting for their sanity and their lives. Rachel has always been Renee's protector, and she will do anything to save her from the shadows that would destroy everything. But there are consequences to every action, and Rachel's actions will change her far beyond what she could ever imagine.