It’s autumn in the town of Harrow, but something besides the season is changing there. Because in that town there is an orchard, and in that orchard, seven most unusual trees. And from those trees grows a new sort of apple: strange, beautiful, with skin so red it’s nearly black. Take a bite of one of these apples, and you will desire only to devour another. And another. You will become stronger. More vital. More yourself, you will believe. But then your appetite for the apples and their peculiar gifts will keep growing—and become darker.

On a sunny morning in June, Margaret Carpenter wakes up to find a new iPhone on her doorstep. She switches it on to find a text from her best friend, Charity Atwater. The problem is, Charity’s been missing for over a month. Most people in town—even the police—think she’s dead. Margaret and Charity have been lifelong friends. They share everything, know the most intimate details about one another…except for the destructive secret hidden from them both. A secret that will trigger a chain of events ending in tragedy, bloodshed, and death. And now Charity wants Margaret to know her story.

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.

Quinn Maybrook and her father have moved to tiny, boring Kettle Springs, to find a fresh start. But what they don’t know is that ever since the Baypen Corn Syrup Factory shut down, Kettle Springs has cracked in half. On one side are the adults, who are desperate to make Kettle Springs great again, and on the other are the kids, who want to have fun, make prank videos, and get out of Kettle Springs as quick as they can.

22-year-old Eileen goes missing while hiking in the remote Ashlough Forest. Five days later, her camera is discovered washed downriver, containing bizarre photos taken after her disappearance. Chris wants to believe Eileen is still alive. When the police search is abandoned, he and four of his friends create their own search party to scour the mountain range. As they stray further into the dark forest and the unsettling discoveries mount, they begin to believe they’re not alone in the trees and that Eileen’s disappearance wasn’t an accident.