January 1937. Jack Miller has just about run out of options. His shoes have worn through, he can't afford to heat his rented room in Tooting, and he longs to use his training as an specialist wireless operator instead of working in his dead-end job. When he is given the chance to join an arctic expedition, as communications expert, by a group of elite Oxbridge graduates, he brushes off his apprehensions and convinces himself to join them.

A beautiful forest. A terrifying legend. It’s 1986. Two strangers, hundreds of miles apart, grapple with disturbing incidents in a one-of-a-kind quaking aspen forest.

Struggling with money, raising a child alone, and fleeing a volatile ex, Jess McMachen accepts a job caring for an elderly patient. Flo Gardner–a disturbed shut-in and invalid. But if Jess can hold this job down, she and her daughter, Izzy, can begin a new life. Flo's vast home, Nerthus House, may resemble a stately vicarage in an idyllic village, but the labyrinthine interior is a dark, cluttered warren filled with pagan artefacts.

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.

Bertram Stone is a former Texas Ranger running from the changes of an ever-evolving world. Horses were being replaced by cars. Laws were changing how Bertram could deliver justice. Wanting to live out his golden years in peace, Stone flees to the quiet town of Hamilton, Texas, where he becomes the local sheriff. In a small town where the law rarely needs enforcing, everything is going according to his plan—until a great evil plunges Hamilton into horror.