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[on interviewing criminals:] I'd let the guy talk, let him project the blame onto someone else, even the victims. Then I'd challenge him. I'd say, 'I know your case. I looked at the crime-scene photos. You cannibalized that woman.' What they like is when you tell them about themselves. Then they open up. [October 1997]
Has interviewed more than 100 murderers, rapists, kidnappers, arsonists, and other criminals, including Richard Speck, Charles Manson, James Earl Ray, Sirhan Sirhan, John Wayne Gacy, David Berkowitz, and Ted Bundy.