Killers of the Flower Moon is a 2023 American epic revisionist Western crime drama film directed by Martin Scorsese, who co-wrote the screenplay with Eric Roth, based on the 2017 book of the same name by David Grann. Its plot centers on a series of Oklahoma murders in the Osage Nation during the 1920s, committed after oil was discovered on tribal land. Leonardo DiCaprio, Robert De Niro, and Lily Gladstone lead an ensemble cast, that also includes Jesse Plemons, Tantoo Cardinal, John Lithgow and Brendan Fraser. It is the sixth feature film collaboration between Scorsese and DiCaprio and the tenth between Scorsese and De Niro, and the eleventh and final collaboration between Scorsese and his musical partner Robbie Robertson