An anthropology professor's obsession with a paranormal mystery threatens her job, marriage, and sanity as she fights to find a missing student.

一对年轻夫妇米拉（艾比科布饰）和托德（肖恩法瑞斯饰）聘请了一名住家护士（林登史密斯饰）来照顾他们生病的儿子，却发现她是一个“死亡天使”，打算通过 任何必要的手段。

　　A young couple Mira (Abbie Cobb) and Todd (Sean Faris) hire a live-in nurse (Lyndon Smith) to be the caregiver for their sick son, only to discover that she is an "angel of death" intent on replacing Mira through any means necessary.