They Won't Forget is a 1937 American drama film directed by Mervyn LeRoy and starring Claude Rains, Gloria Dickson, Edward Norris, and Lana Turner, in her feature debut. It was based on a novel by Ward Greene called Death in the Deep South, which was in turn a fictionalized account of a real-life case: the trial and subsequent lynching of Leo Frank after the murder of Mary Phagan in 1913.