When 19-year old Tara Sidarovich goes missing from her Punta Gorda home, Florida Police consider her a runaway. Then her body turns up in a swamp. Shocking prison recordings will send detectives on a nationwide hunt for her killer.

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.