9780593358900_

The amateur DNA sleuth who solved one of the most infamous cold cases in American historythe Golden State Killer crime spreetells the incredible 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 improbable journey to becoming the nations leading authority in investigative genetic genealogy, and to identifying the Golden State Killerwho had evaded authorities for forty-four yearsin just sixty-three days.

Rae-Venter also details other extraordinary cases that she has worked on, from the first criminal cold case she ever crackeduncovering the long-lost identity of a child abducteeto 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, probabilitiesbut she also sees the very stuff that makes us who we are. Drawing on both her own experiences and insights from all the key players in her investigations, Rae-Venter brings readers inside her unique grasshopper mind as she analyzes DNA data; pores through obituaries, marriage records, and old newspapers articles; and envisions different scenarios that bring her closer and closer to her target. She lets readers join in on urgent calls from sheriffs, FBI agents, district attorneys, and researchers, and she takes us inside the struggle to obtain a usable crime scene DNA sample and other unexpected roadblocks that often make the search more difficult. Time and again, Rae-Venter pushes through setbacks, finds new angles of investigation, and uses the most cutting-edge new technologymuch of it developed during her searchuntil, finally, a critical piece of the puzzle suddenly tumbles into place.

I Know Who You Are captures the exhilaration of the moment of discovery in cold case investigations, but also the sheer depth of emotion that lingers around these cases and informs Rae-Venters careful approach to her work. It is a story of relentless curiosity, of constant invention and reinvention, and of recognizing that we may not be who we thought we were.

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EDGAR AWARD FINALIST A true-crime masterpiece written by a cold-case-cracking master.John Douglas, New York Times bestselling co-author of Mindhunter

Barbara Rae-Venter isnt just the genealogy expert who helped capture the Golden State Killershes an unsung hero who has given murdered women and children their faces and names back.Maureen Callahan, New York Times bestselling author of American Predator

Echoes the dedication displayed by such fictional police detectives as California novelist Michael Connellys Harry Bosch.The Wall Street Journal

For twelve years the Golden State Killer terrorized California, stalking victims and killing without remorse. Then he simply disappeared, for the next forty-four years, until an amateur DNA sleuth opened her laptop. In I Know Who You Are, Barbara Rae-Venter reveals how she went from researching her family history as a retiree to hunting for a notorious serial killerand how she became the nations leading authority on investigative genetic genealogy, the most dazzling new crime-fighting weapon to appear in decades.

Rae-Venter shares haunting, often thrilling accounts of how she helped solve some of Americas most chilling cold cases in the span of just three years, frequently starting with little more than a DNA sample. She brings readers inside her unique grasshopper mind as she pores through obituaries, marriage records, and old newspaper articles. Readers join in on urgent calls with sheri?s, FBI agents, and district attorneys as she details the struggle to obtain usable crime scene DNA samples, until, ?nally, a critical piece of the puzzle clicks into place.

I Know Who You Are captures both the exhilaration of these discoveries and the deep-rooted emotions that linger around cold cases. It is a story of relentless curiosity and reinvention, and of human beings striving to answer the most elemental questions about themselves: What de?nes identity? Where do we belong? And are we truly who we think we are?

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I Know Who You Are

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