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John E. Douglas
John Edward Douglas is a former special agent and unit chief in the United States Federal Bureau of Investigation. He was one of the first criminal profilers and has written books on criminal psychology. - Wikipedia
Crime classification manual
Synopsis
This manual introduces a standardized diagnostic system for classifying violent crimes, including murder, arson, and sexual assault. Developed from nearly a decade of FBI study, it aims to improve communication and investigative techniques among law enforcement agencies. The system provides a common terminology and framework for understanding perpetrators and victims, enabling police departments nationwide to coordinate efforts and solve crimes more effectively.
