Jared Harris, Sam Claflin, Olivia Cooke
A university student (Sam Claflin of 'The Hunger Games: Catching Fire') and some classmates are recruited to carry out a private experiment -- to create a poltergeist. Their subject: an alluring, but dangerously disturbed young woman (Olivia Cooke of Bates Motel). Their quest: to explore the dark energy that her damaged psyche might manifest. As the experiment unravels along with their sanity, the rogue PHD students are soon confronted with a terrifying reality: they have triggered an unspeakable force with a power beyond all explanation.