Killers of the Flower Moon is based on David Grann's highly praised best-seller. Set in 1920s Oklahoma, the film depicts the serial murder of members of the oil-wealthy Osage Nation, a string of brutal crimes that came to be known as the Reign of Terror. Gray Horse, Oklahoma 1919. DiCaprio plays Ernest Burkhart, and Gladstone appears as Mollie Burkhart, an Osage woman who falls in love with Ernest. Early in their relationship, Mollie invites him in for a meal and they form a bond.
A native of Montana, Lily Gladstone is of Blackfeet and Nez Perce descent. She made her film debut in Alex and Andrew Smith's "Winter in the Blood,