Portraying serial killers in a simplified light, books and movies do little to help us understand the reality of these all-too-real threats. Exploring the means, motives, and opportunities of more than 100 notorious serial killers, revealing what (if anything) drove them to their crimes, this book profiles John Wayne Gacy, David Berkowitz ("Son of Sam"), Jeffrey Dahmer, and Aileen Wuornos, as well as Brazilian cannibal José Vincente Matias and Britain's "Moors Murderers," Ian Brady and Myra Hindley. Also included are less familiar predators from Australia, China, Columbia, the Czech Republic, France, Greece, India, South Korea, and beyond.