A woman in her third trimester of pregnancy is stalked by a stranger who is obsessed with her unborn child.

During her last month of pregnancy, the young Chicago photographer, Sarah Clark, has a hideous car crash that claims her husband's life. Widowed, alone, and emotionally scarred, Sarah is about to spend her first Christmas Eve after the terrible incident without her loved ones; when, suddenly, a knock at the door in the middle of a rainy night will lead to a nightmarish home invasion. Now, an obsessive woman in black wants something precious from her, hell-bent on getting it at all costs. Can Sarah survive this blood-drenched night of terror?—Nick Riganas