Katie Kuhlmann's marriage is falling apart. But she has a secure job, her children are healthy, and a beautiful new home in a prestigious neighborhood in Edina, Minnesota. She can almost ignore that her husband Jack, has been constantly checking his phone, not going to work, and disappearing from the house only to show up again without explanation. Tension rises when Adam "Bagman" Ross, a mutual friend from college, happens to be in the neighborhood and in need of a place to stay. Jack is quick to welcome Bagman into their home, but his strange behavior only gets worse, and Katie fears their new guest is also harboring a dark secret. As she begins to uncover the truth, she realizes that something is terribly wrong, and she must race to protect her family as danger closes in.