别敲两次门

杰西（凯缇·萨克霍夫 Katee Sackhoff 饰）在女儿克洛伊（露西·宝通 Lucy Boynton 饰）很小的时候就离开了她，长久以来，杰西的内心里都充满了对女儿的愧疚。终于，她得到了一个弥补过错的机会，将已经长大成人的克洛伊接回了家，然而，让杰西没有想到的是，随着克洛伊的回归，她的身边开始接二连三的发生科学无法解释的诡异事件，而这一切似乎和克洛伊的过去有着千丝万缕的关联。 　　一切要追溯到克洛伊很小的时候，她的邻居是一个被称为“女巫”的古怪婆婆。懵懂无知的克洛伊和伙伴们常常会戏弄这个形单影只的老人，对于孩子们来说，他们过分的举动只是一个有趣的游戏而已，可是对于老人来说，无知的孩子们犯下的是不可饶恕的过错。The sculptor Jess unsuccessfully tries to retrieve the custody of her teenage daughter Chloe. During the night, Chloe and her boyfriend Danny play a prank challenging an urban legend: and they knock twice on the door of the witch Mary Aminov. Soon Danny is hunted down by a fiend and vanishes. When Chloe is haunted by the evil spirit, she flees to the house of her estranged mother and her husband Ben to stay with her mother. Soon the demon finds her and haunts the house while Ben is traveling. Jess' model Tira sees darkness around Chloe and she researches the Internet about the mystery. Meanwhile Detective Boardman is investigating the disappearance of Danny and suspects Jess is manipulating her troubled daughter.