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Detective Kari Johnson of the Denver, Colorado Police Department and Dr. Angela Williamson, the Forensics Unit Supervisor at the Bureau of Justice Assistance, describe how decades of determined police work and cutting-edge forensic science identified Joe Michael Ervin as the person who assaulted and murdered four women between 1978 and 1981. Read the transcript.
By Office of Justice Programs4.8
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Detective Kari Johnson of the Denver, Colorado Police Department and Dr. Angela Williamson, the Forensics Unit Supervisor at the Bureau of Justice Assistance, describe how decades of determined police work and cutting-edge forensic science identified Joe Michael Ervin as the person who assaulted and murdered four women between 1978 and 1981. Read the transcript.

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