Ted Bundy. John Wayne Gacy. Jeffrey Dahmer. The names of notorious serial killers are usually well-known; they echo in the news and in public consciousness. But most people have never heard of Israel Keyes, one of the most ambitious and terrifying serial killers in modern history. Described by a prosecutor as "a force of pure evil," Keyes was a predator who struck all over the United States. American Predator is the ambitious culmination of years of interviews with key figures in law enforcement and in Keyes's life, and research uncovered from classified FBI files. Callahan takes us on a journey into the chilling, nightmarish mind of a relentless killer, and to the limitations of traditional law enforcement.