I Have Lived in the Monster: Inside the Minds of the World’s Most Notorious Serial Killers by Robert K. Ressler, VSM, and Tom Shachtman. Agent Ressler, who coined the term “serial killer” in the 1970s, recounts his years since leaving the FBI, working as an independent criminal profiler on some of the most famous serial murder cases of our day. Piecing clues from crime scenes, along with killing patterns and methods, Ressler explains his role assisting investigations of such perplexing international cases as England’s Wimbledon Common killing, the ABC Murders in South Africa, and the deadly gassing of Japan’s subway. We’re also witness to Ressler’s fascinating, in-depth interviews with John Wayne Gacy, plus a shockingly candid discussion with “cannibal killer” Jeffrey Dahmer.