As her life implodes, a dark figure watches. There's nothing divine about this intervention …

After a harrowing night of life-shattering events, Addie is unraveling. With a handful of pills and a bottle of her mother's vodka, it's only thanks to a sudden, uninvited guest that she's barely yanked from the edge. An unearthly intruder, come to spare her from self-destruction …

… with plans far beyond any nightmare she could dream of …

In a strange room, she awakens to the sounds of screams nearby. The door is locked. No one answers when she calls. All she finds is a single envelope on the desk beside her bed. Adelaide, it reads. Inside lies a dangerous letter. A dangerous promise. It's a danger as old as evil, and far more alluring. Irresistible. Because no matter the cost, when it's hope that's offered … it's only human to reach for it.

Contains mature themes.