Martin Scorsese has his two most frequent collaborators, Robert DeNiro and Leonardo DiCaprio, back in starring roles for his upcoming crime drama, Killers of the Flower Moon. Coming to theaters and Apple TV+, Killers of the Flower Moon is based on the book, Killers of the Flower Moon: The Osage Murders and the Birth of the FBI by David Grann. Set in the 1920s, the movie follows a series of mysterious killings of members of the Osage tribe in Oklahoma, a tribe who gained tremendous wealth when oil was discovered under their lands. The FBI is called in to investigate the murders along with the Texas Rangers. Along with DeNiro and DiCaprio, the movie co-stars Brendan Fraser, Jesse Plemons, Lily Gladstone, Tantoo Cardinal, John Lithgow, Cara Jade Myers, JaNae Collins, and Jillian Dion. Killers of the Flower Moon will open in October in theaters and then debut sometime later on Apple TV+, check out the trailer below.