Further clues to the mystery of William (Wilhelm) Dieterle, who acted for Murnau in the 20s and became a director for Warner Brothers in the 30s. The Last Flight (1932) was his first American film, the story of four World War I pilots tenuously returning to society. Dieterle would later be responsible for some of Warners’ most sluggish “prestige” pictures—The Life of Emile Zola, Juarez—but there may be some vigor in his early career. 80 min.