Leigh Harker's quiet suburban home was her sanctuary for more than a decade, until things abruptly changed. Curtains open by themselves. Radios turn off and on. And a dark figure looms in the shadows of her bedroom door at night, watching her, waiting for her to finally let down her guard enough to fall asleep.

Pushed to her limits but unwilling to abandon her home, Leigh struggles to find answers. But each step forces her towards something more terrifying than she ever imagined.

A poisonous shadow seeps from the locked door beneath the stairs. The handle rattles through the night and fingernails scratch at the wood. Her home harbours dangerous secrets, and now that Leigh is trapped within its walls, she fears she may never escape.