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 - a rich, eccentric twenty-three-year-old woman, seen fleeing one of the crime scenes. But she was acquitted, and she retreated to the isolation of her mansion.

Oregon, 2017. Shea Collins is a receptionist, but by night, she runs a true-crime website, the Book of Cold Cases - a passion fueled by the attempted abduction she escaped as a child. When she meets Beth by chance, Shea asks her for an interview. To Shea’s surprise, Beth says yes.

Upstate New York, 1982. Viv Delaney wants to move to New York City, and to help pay for it she takes a job as the night clerk at the Sun Down Motel in Fell, New York. But something isn’t right at the motel, something haunting and scary.