Daughter of the Dragon
Lloyd Corrigan, Monte M. Katterjohn, Sidney Buchman
Anna May Wong as Pricess Ling Moy, Bramwell Fletcher as Dr. Petrie, Warner Oland as Fu Manchu
Princess Ling Moy is romantically involved with Ah Kee, a secret agent out to stop Fu Manchu. She had been sent to England by her father, Fu Manchu, to handle a sensitive matter and happened to choose to live next to Dr. Petrie.
[Note: according to Wikipedia: "The film was made to capitalize on Sax Rohmer's then current book, The Daughter of Fu Manchu, which Paramount (the studio) did not own the rights to adapt."]