Incredible book detailing the events of the 1920s Osage murders in Oklahoma and the subsequent creation of the FBI. David Grann takes a creative approach to this investigative nonfiction, resulting in an immersive and emotional read. Even so, Grann takes special care to properly cite all references and quotes used throughout the book. I started this book with zero knowledge on the Osage murders and did not feel lost or that I needed more background information at any point, Grann covers it all in great detail without being dry.