Beulah Quo was an American actress and activist born in Stockton, California. The spelling of her last name changed from Kwoh to Quo because she was constantly asked if KWOH was a radio station. She starred in many films and television series beginning in the mid-1950s, and was best known for her appearances in General Hospital (1963), Chinatown (1974), and Brokedown Palace (1999). She was also an advocate of more and better screen roles for Asian actors, and founded several organizations in pursuit of that goal.

Chinatown is a 1974 American neo-noir mystery film directed by Roman Polanski from a screenplay by Robert Towne. The film stars Jack Nicholson and Faye Dunaway. It was inspired by the California water wars, a series of disputes over southern California water at the beginning of the 20th century, by which Los Angeles interests secured water rights in the Owens Valley. The Robert Evans production, released by Paramount Pictures, was Polanski's last film in the United States and features many elements of film noir, particularly a multi-layered story that is part mystery and part psychological drama.