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I KNOW WHO YOU ARE
by Barbara Rae Venter

I KNOW WHO YOU ARE by Barbara Rae Venter

A Finalist for the MWA Edgar Award for Best Fact Crime!

“Like a good crime writer, Ms. Rae-Venter has a gift for storytelling. She describes the Golden State investigation and other cases—their complications and vexations, dead ends and breakthroughs—with enviable clarity, suitable detail and a fine sense of pace. Her scientific explanations are concise and her revelations are dramatic. I Know Who You Are is a remarkably exciting book. . . . Her description of the obsessive zeal with which she sought this personification of evil echoes the dedication displayed by such fictional police detectives as California novelist Michael Connelly’s Harry Bosch.”

Rights sold: Vietnamese: 1980 Books

“A lucid and entertaining detective story . . . Rae-Venter is a scientist at heart, and driven by a scientist’s particular, almost possessive hunger for knowledge.”

—Slate

“A gripping story tracing the hundreds of hours spent rifling through people’s family ties to find killers and identify bodies.”

—Nature

“A remarkable account . . . Rae-Venter makes the science accessible and delves into the controversy that forensic genealogy has engendered because of privacy concerns . . . An eye-opening and thought-provoking contribution to the true crime genre.”

—Publishers Weekly (starred review)

“Fascinating true-crime reportage infused with cinematic suspense . . . [Barbara Rae-Venter’s] chronicle is a solid testament to the evolution of genetic forensic science and how it has made investigators more effective in apprehending criminals, both from cold cases and those in real time. It’s also an examination of corrupted humanity gone haywire and the thrill and release of an abuser being brought to justice.”

—Kirkus Reviews

“I Know Who You Are is a true-crime masterpiece written by a cold-case-cracking master. Barbara Rae-Venter’s investigative DNA work has revolutionized the way law enforcement hunts serial killers. This page-turner takes readers inside the web of lies spun by the worst criminal minds and reveals the path to solving the country’s most notorious crimes. An epic read and a searingly important story.”

—John Douglas, New York Times bestselling co-author of Mindhunter: Inside the FBI's Elite Serial Crime Unit

“Barbara Rae-Venter isn't just the genealogy expert who helped capture the Golden State Killer—she's an unsung hero who has given murdered women and children faces and names, the recognition that their lives mattered. This book is an invaluable addition to the true-crime genre.”

—Maureen Callahan, New York Times bestselling author of American Predator: The Hunt for the Most Meticulous Serial Killer of the 21st Century

“I Know Who You Are is a propulsive true-crime thriller that takes the reader deep inside the manhunt for one of the most terrifying serial killers in American history. Barbara Rae-Venter's admirable work as a DNA sleuth provided the searing heat that melted the coldest of cold cases.”

—Casey Sherman, New York Times bestselling co-author of Helltown: The Untold Story of a Serial Killer on Cape Cod

“I Know Who You Are offers an immersive, compelling account of a revolution in crime-fighting from the citizen-scientist who pioneered it. With urgency and insight, Barbara Rae-Venter tells the unlikely story of a retired patent attorney whose obsessive, scientific mind transformed her from a genealogical hobbyist into the citizen-scientist who helped identify one of America's most notorious serial killers. Rae-Venter's deep dive into the Golden State Killer case explores the science, history and ethics around a technique that has led to the solving of hundreds of cold cases, a fierce debate over privacy, and a burgeoning awareness of the power of DNA technology to transform our lives by revealing the truth about the past.”

—Libby Copeland, author of The Lost Family: How DNA Testing Is Upending Who We Are

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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 killer—and how she became the nation’s 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 America’s 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 sheriffs, FBI agents, and district attorneys as she details the struggle to obtain usable crime scene DNA samples, until, finally, 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 defines identity? Where do we belong? And are we truly who we think we are?—The Wall Street Journal