When oil is discovered in 1920s Oklahoma under Osage Nation land, the Osage people are murdered one by one—until the FBI steps in to unravel the mystery.

New documentary featuring Scorsese, actors Leonardo DiCaprio and Lily Gladstone, author David Grann, Osage Nation Principal Chief Geoffrey Standing Bear, Osage cultural consultant John Williams, editor Thelma Schoonmaker, and other members of the cast and crew