A sexual assault survivor's 35-year fight for justice takes an unexpected turn when her adult daughter uses DNA genealogy to identify the rapist as her mother's best friend's ex-husband, leading to federal charges. Despite the statute of limitations blocking rape prosecution, investigators use lies to a federal agent to finally imprison Dr. Fred Tanzer. Dana Beatty's attacker, Dr. Fred Tanzer, evaded prosecution for over three decades because Ohio's statute of limitations on rape had expired before DNA genealogy could identify him, exposing a critical gap in sexual assault laws.