Former head of the FBI's Serial Crime Unit, JOHN DOUGLAS. For 20 years he investigated serial murders for the FBI, and developed techniques to get criminals to talk, and to lure them into capture. He also pioneered criminal profiling. Many of his techniques have been adopted by police departments and prosecutors nationwide. DOUGLAS interviewed such notorious killers as Charles Manson and Richard Speck. He has a memoir, Mind Hunter: Inside the FBI's Elite Serial Crime Unit (Lisa Drew book, written with Mark Olshaker). (Originally aired 12

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