After learning that she is the daughter of accused serial killers Todd and Pamela Larsen, privileged 24-year-old Olivia Taylor ends up in the small town of Cainsville, Illinois, to prove her birthparents' innocence. But as she and Gabriel, her mother's lawyer, start investigating the case, Olivia finds herself drawing on abilities that have remained hidden since her childhood, gifts that make her both a valuable addition to Cainsville and deeply vulnerable to unknown enemies.