In episode four of the DNA season, Just Science interviews Dr. Barbara Rae-Venter, genetic genealogist and volunteer search angel with DNAadoption.org, about investigative genetic genealogy and its use in forensic science.

From computer programmer to patent attorney, Dr. Rae-Venter’s career has taken many unexpected turns. But no one would have predicted the impact she would have in retirement. In 2017, she was instrumental in identifying the Golden State Killer. Before that, she was asked to identify a woman who had been abducted as a child using her investigative genetic genealogy expertise. Listen along as she discusses the techniques used for creating family trees and the resolution of her first cold case.

This season is funded by the National Institute of Justice’s Forensic Technology Center of Excellence.