Written by legendary FBI criminal profiler, #1 New York Times bestselling author, and inspiration for the hit Netflix show Mindhunter, John Douglas delves deep into the lives and crimes of four predatory killers, including: Charles Manson, ”Son of Sam Killer” David Berkowitz and ”BTK Strangler” Dennis Rader, offering never-before-revealed details about his profiling & the strategies used to crack some of America’s most challenging cases.