David Grannโs Killers of the Flower Moon: The Osage Murders and the Birth of the FBI is a chilling work of narrative nonfiction that exposes one of Americaโs darkest chapters. Set in 1920s Oklahoma, the book recounts the systematic murders of wealthy Osage Nation members, who had become some of the richest people in the world after oil was discovered on their land. Blending true crime, history, and investigative journalism, Grann reveals how corruption, racism, and greed converged in a conspiracy that shocked the nation. The case also marked the early days of the FBI under J. Edgar Hoover. More than just a historical account, this book forces readers to confront uncomfortable truths about justice, power, and the human cost of exploitation.