One hot August night in 1993, a young couple go to a party. When their car breaks down, they are picked up by a truck driver who attacks the man and abducts the woman. She is never seen again. That woman was Fiona Green’s mother. When the trucker, Eddie Ward, is caught, a mass grave of bodies is discovered in his backyard, but Fiona’s mother isn’t there. Thirty years later, on his prison deathbed, Ward insists that he didn’t kill her, so Fiona finds herself back in the small town where her mother disappeared. Fighting demons of her own, she’s shocked when history repeats itself: another woman, another roadside breakdown, and another disappearance. Only this time the primary suspect is Jason Ward, Eddie’s son. Desperate, Fiona hunts down answers, unaware that she is being drawn into a dangerous trap.

Few in sleepy Sumner’s Mills have stumbled across the Octagon House hidden deep in the woods. Even fewer are brave enough to trespass. A man had killed his wife and two young daughters there, a shocking, gruesome crime that the sleepy upstate New York town tried to bury. One summer night, an emboldened 14-year-old Clare and her best friend, Abby, ventured into the Octagon House. Clare came out, but a piece of Abby never did. Twenty years later, an adult Clare receives word that Abby has attempted suicide at the Octagon House and now lies in a coma. With little to lose and still grieving after a personal tragedy, Clare returns to her roots to uncover the darkness responsible for Abby’s accident.