The 1964 murder of 9-year-old Marise Chiverella leaves the devout town of Hazelton, PA, in fear. An intense manhunt yields numerous suspects but no killer. Five decades pass before a student moonlighting as a genetic genealogist reignites the case.

When the body of 81-year-old Helen Gale is found in her burned-out car, investigators in Southfield, Michigan wonder who would murder this pillar of the community. It will be eight years before a blown alibi brings them face-to face with her killer.