Behind That Curtain is a 1929 American Pre-Code mystery film directed by Irving Cummings and starring Warner Baxter, Lois Moran and Gilbert Emery. It was the first Charlie Chan film to be made at Fox Studios. It was based on the 1928 novel of the same name. Charlie Chan, who is played by the Chinese American E. L. Park, gets one mention early in the film, then makes a few momentary appearances after 75 minutes. Park, in fact, was the first Chinese American to play Charlie Chan on-screen. Producer William Fox chose this film to open the palatial Fox Theatre in San Francisco on June 28, 1929. It was a sound film.