During the 1920s, the world's wealthiest people per capita were the Osage Indians of Oklahoma. Upon the discovery of oil underneath their lands, they built their own mansions, were driven around by chauffeurs in their own automobiles, and enrolled their children to expensive European schools. That is, until the richest of them were killed off one by one. Killers of the Flower Moon sheds light on the long-kept conspiracy that ordered the murder of more than two dozens of Osage members. David Grann's narrative nonfiction is based upon several years of deep research and shocking new evidence. Each piece of information throughout the Bureau's investigation is a step deeper into an intricate web of cover-ups. More importantly, Killers of the Flower Moon illustrates the prejudice and antipathy towards Native Americans which granted the murderers and conspirators impunity all those years ago—even up to this day.