With nothing but the clothes on his back - and something horrific snapping at his heels - Jack Winter fled his rural Georgia home when he was just a boy. Watching the world he knew vanish in a trucker’s rearview mirror, he thought he was leaving an unspeakable nightmare behind forever. Now, years later, the bright new future he’s built suddenly turns pitch black, as something fiendishly familiar looms dead ahead. Surviving a violent car crash seems like a miracle for Jack’s family, but Jack knows there’s nothing divine about it.

Deep in the heart of Appalachia stands a crooked farmhouse miles from any road. The Morrows keep to themselves, and it's served them well so far. When girls go missing off the side of the highway, the cops don't knock on their door. Which is a good thing, seeing what's buried in the Morrows' backyard. But 19-year-old Michael Morrow isn't like the rest of his family. He doesn't take pleasure in the screams that echo through the trees.

Nicholas, a would-be poet, and Nakota, his feral lover, discover a strange hole in the storage room floor down the hall - "Black. Pure black and the sense of pulsation, especially when you look at it too closely, the sense of something not living but alive." It begins with curiosity, a joke - the Funhole down the hall. But then the experiments begin. "Wouldn't it be wild to go down there?" says Nakota. Nicholas says "We're not." But they're not in control, not from the first moment, as those experiments lead to obsession, violence, and a very final transformation.

1967: A brutal murder occurs at the Weston State Hospital in West Virginia. To amateur exorcist, Merle Blatty, this shocking story rings of the occult. Fueled by a desire to avenge the deaths of his wife and son, Merle investigates the case, unknowingly stepping into a sinister web spanning decades.

In the summer of 1994, psychologist Daniel Hill buys a rustic farmhouse nestled in the rolling hills of West Virginia. Along with his wife and teenage daughter, the family uproots their lives in Ohio and moves south. They are initially seduced by the natural beauty of the country setting. That soon changes when they discover a hidden room in the basement with a well, boarded shut and adorned with crucifixes. Local legends about the previous owner being an exorcist come to light, but by then, all Hell has broken loose.