Starring Michael Shannon (Man of Steel, The Iceman) and directed by John McNaughton (Wild Things), a mentally unstable physician (Samantha Morton) keeps her dying son completely secluded from the outside world in a bid to preserve what life he has left. She becomes unhinged when she learns that her new neighbour (Natasha Calis) has secretly befriended the boy, and has been encouraging behaviour she doesn’t approve of. The abnormal becomes normal and the terrifying question arises – how far will she go to protect her son?