In the 1920s, members of the Osage Nation in Oklahoma were being murdered after oil was discovered beneath their land. As the death toll mounted, the newly formed FBI was called in to investigate in what became one of the agency's first major homicide cases. Directed by Martin Scorsese and based on David Grann's best-selling nonfiction book, Killers of the Flower Moon is an American epic of greed, betrayal, and the devastating consequences of unchecked power, featuring extraordinary performances by Leonardo DiCaprio, Robert De Niro, and Lily Gladstone.