Mankiewicz had a huge success with "A Letter to Three Wives" (1949), which he wrote and directed, winning Oscars for both; Sol Siegel produced. He and Siegel collaborated again on "House of Strangers" (1949), on which Mankiewicz did some uncredited writing. Mankewicz wrote and directed "No Way Out" (1950), which launched the career of Sidney Poitier; Darryl F. Zanuck was credited as producer. Zanuck also took that credit on Mankiewicz's next film, "All About Eve" (1950), which quickly became regarded as a classic.