Former FBI agent John Douglas, the inventor of criminal profiling, leads a journey into the minds of the 20th Century's most notorious killers, including Charles Manson, John Wayne Gacy, and Jeffrey Dahmer.
Overview：Former FBI agent John Douglas, the inventor of criminal profiling, leads a journey into the minds of the 20th Century's most notorious killers, including Charles Manson, John Wayne Gacy, and Jeffrey Dahmer.
