Marissa Rooney stands in her daughter's empty dorm room, a half-used vial of insulin clutched in her trembling hand. Brooke has been missing for days. Her roommate hasn't seen her since that night in the bar. And if Marissa has Brooke's insulin, it means that Brooke does not. But Marissa isn't alone in her terror. A phantom from her past is lurking in the shadows, waiting in the night, and holding her family captive...in the dark.