I know who you are : how an amateur DNA sleuth unmasked the Golden State Killer and changed crime fighting forever

Summary: The amateur DNA sleuth who solved one of the most infamous cold cases in American history--the Golden State Killer crime spree--tells the true story of how she did it, and explains how her methods have forever changed criminal investigations. In the span of just a few years, Barbara Rae-Venter went from researching her family history as a retiree to finding a serial killer who had baffled law enforcement for decades. I Know Who You Are tracks her journey to becoming the nation's leading authority in investigative genetic genealogy, and to identifying the Golden State Killer--who had evaded authorities for forty-four years--in just sixty-three days. Rae-Venter also details other extraordinary cases that she has worked on, from the first criminal cold case she ever cracked--uncovering the long-lost identity of a child abductee--to the heartbreaking case of the Billboard Boy, which began with unidentified remains dumped along a North Carolina highway. When she looks at DNA data, Rae-Venter sees numbers, percentages, probabilities--but she also sees the very stuff that makes us who we are.