Martin Scorsese writes "A Letter to Elia," part profile of filmmaker Elia Kazan and part memoir about how Kazan's "On the Waterfront" and "East of Eden" impacted him as a young man. The doc features clips, photos and excerpts from Kazan's autobiography, as well as a speech Kazan gave on directing, a videotaped interview with Kazan and Scorsese's own commentary.