Retired San Bernardino County Sheriff’s Deputy Peter Headley worked as an investigator with the department’s Crimes Against Children Unit. He was closely involved in the ongoing case of ‘Lisa’, the girl who was abducted, abused, and victimized by Terry Rasmussen. In the previous episode, #503, Headley gives an overview of Rasmussen’s killing spree across the country, including Southern California. In this bonus episode, Headley talks about forensic science, genealogy, and groundbreaking advancements in DNA that helped to not only identify victims but get some answers to questions asked long ago.