Criminal psychologist Erin Larson's dreams of a successful career come to a screeching halt when she nearly loses her own life in a boating accident on Puget Sound and then learns that her mother tried to commit suicide. She leaves her job as a criminal psychologist to care for her mother in Montana. At least she is able to produce her podcast, which focuses on solving missing persons cold cases.
Nathan Campbell's father was investigating such a case when he was shot, and now Nathan needs to enlist Erin's help to solve the case. She's good at what she does. The only problem? She's his ex.
As the two dig deeper, it becomes clear that they, too, are being targeted--and that the answers to their questions are buried deep within the past Erin struggles to explain and longs to forget.