The legendary FBI criminal profiler, number-one New York Times bestselling author, and inspiration for the hit Netflix show Mindhunter delves deep into the lives and crimes of four of the most disturbing and complex predatory killers, offering never-before-revealed details about his profiling process, and divulging the strategies used to crack some of America’s most challenging cases.\n\nThe FBI’s pioneer of criminal profiling, former special agent John Douglas, has studied and interviewed many of America’s most notorious killers–including Charles Manson, \