Members of the Osage tribe in northeastern Oklahoma are murdered under mysterious circumstances in the 1920s, sparking a major BOI investigation directed by a 29-year-old J. Edgar Hoover and former Texas Ranger Tom White, described by Grann as "an old-style lawman." The film stars Leonardo DiCaprio, Robert De Niro, and Lily Gladstone. It marks the sixth feature film collaboration between Scorsese and DiCaprio and the tenth between Scorsese and De Niro.