Before Martin Scorsese’s Killers of the Flower Moon debuted at Cannes, audiences had a preview of what his leading lady Lily Gladstone could do in the Sundance title Fancy Dance, in which she played a Native American aunt who would do anything to keep her family together. Family plays a big part in Scorsese’s adaptation of David Grann’s 2017 bestseller too; in his telling of the horrific true crimes committed against the oil-rich Osage people of Oklahoma. Gladstone’s real-life character, Mollie, marries Ernest Burkhart (Leonardo DiCaprio) and stumbles on a plot devised by her husband’s duplicitous uncle William King Hale (Robert De Niro) to kill her kinfolk for their money. Here, Gladstone discusses what it meant to tell Mollie’s story.