Emma takes on a night watch job to unravel the mystery of her parents' disappearance nearly thirty years ago. But when she confronts serial killer Wörmer in his cell, she awakens him from a coma, triggering a series of catastrophic events.
When an American family is invited to spend the weekend at the idyllic country estate of a charming British family they befriended on vacation, what begins as a dream holiday soon warps into a snarled psychological nightmare.