Introducing Israel Keyes While most true crime enthusiasts are familiar with infamous names like the Killer Clown or the Happy Face Killer, few have heard of Israel Keyes — one of the most calculating and terrifying serial killers in modern American history. In American Predator , author Maureen Callahan masterfully uncovers the disturbing details that led to Keyes’ arrest and the shocking revelations that followed. This bone-chilling true crime book is a must-read, offering