While investigating the heinous Osage murders for his new book, David Grann also came to know the victims' faces: One day in 2012, when I was visiting the Osage Nation Museum, in Oklahoma, I saw a panoramic photograph on the wall. Taken in 1924, the picture showed members of the Osage Nation alongside white settlers, but a section had been cut out. When I asked the museum director why, she said it contained the image of a figure so frightening that she'd decided to remove it. She then pointed to the missing panel and said, "The devil was standing right there."