The book chosen for September is "Killers of the Flower Moon" by David Grann. In "Killers of the Flower Moon", Grann revisits a shocking series of crimes from the 1920s in which dozens of people were murdered in cold blood. Based on years of research and startling new evidence, the book is a masterpiece of narrative nonfiction, as each step in the investigation reveals a series of sinister secrets and reversals. But more than that, it is a searing indictment of the callousness and prejudice toward American Indians that allowed the murderers to operate with impunity for so long. "Killers of the Flower Moon" is utterly compelling, but also emotionally devastating. The film based on the bok was released in 2023.