Greed, white superiority, injustice, and murder.  I knew nothing of this historic tragedy prior to reading this book.  Grann brings the cold blooded, greed fueled murders of Osage Indians to life through his adept and thorough research.  This true crime piece of nonfiction is dense in details and flows slowly.  But ultimately the details, and the book as a whole, are necessary and well honor the Osage by highlighting the tragedy and injustice brought upon them.