April and Eddie have taken a wrong turn. They’re looking for the small resort town where they plan to spend their honeymoon. When they spot what appears to be a lone hitchhiker along the deserted road, they stop to help. But not long after the hitchiker gets into their car, they see the blood seeping from her jacket and a truck barreling down Atticus Line after them. When the hitchhiker dies at the local hospital, April and Eddie find themselves in the crosshairs of the Coldlake Falls police. Unexplained murders have been happening along Atticus Line for years, and the cops finally have two witnesses who easily become their only suspects. As April and Eddie start to dig into the history of the town and that horrible stretch of road to clear their names, they soon learn that there is something supernatural at work.

In 1977, Claire Lake, Oregon, was shaken by the Lady Killer Murders. Two men, seemingly randomly, were murdered with the same gun, with strange notes left behind. Beth Greer was the perfect suspect, but she was acquitted and retreated to the isolation of her mansion. Oregon, 2017. Shea Collins is a receptionist who runs a true crime website, the Book of Cold Cases. When she meets Beth by chance, Shea asks her for an interview. To Shea’s surprise, Beth says yes. They meet regularly at Beth’s mansion, though Shea is never comfortable there. Is she making friends with a manipulative murderer, or are there other dangers lurking in the darkness of the Greer house?

Upstate New York, 1982. Viv Delaney wants to move to New York City. To help pay for it, she takes a job as the night clerk at the Sun Down Motel in Fell, New York. But something isnʼt right at the motel, something haunting and scary. Upstate New York, 2017. Carly Kirk has never been able to let go of the story of her aunt Viv, who mysteriously disappeared from the Sun Down before she was born. She decides to move to Fell and visit the motel, where she quickly learns that nothing has changed since 1982. And she soon finds herself ensnared in the same mysteries that claimed her aunt.

Vermont, 1950. There are rumors that Idlewild Hall, a boarding school, is haunted. Four roommates bond over their whispered fears, but then one of them mysteriously disappears. Vermont, 2014. Journalist Fiona Sheridan cannot stop revisiting the events surrounding her older sister's death. Though her sister's boyfriend was tried and convicted of murder, Fiona can't shake the suspicion that something was never right about the case. When Fiona discovers that Idlewild Hall is being restored by an anonymous benefactor, she decides to write a story about it. But a shocking discovery during the renovations will link the loss of her sister to secrets that were meant to stay hidden in the past.