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The Chicago Killer: The Hunt For Serial Killer John Wayne Gacy is the story of the capture of John Wayne Gacy, as told from the perspective of the former Chief of Detectives of the Des Plaines, Illinois Police Department , Joseph Kozenczak. The conviction of Gacy on 33 counts of murder is significant in the archives of the criminal justice system in the United States. Two additional articles give the reader a comprehensive insight into the use of psychics and the lie-detector in a serial murder investigation.