Murder at Monogram (2011)

In 1945 Monogram pictures is about to start production on a new Charlie Chan film, The Scarlet Clue. Black actor Mantan Moreland and actor Benson Fong discover the body of a young woman on the set of the new picture. Mantan phones the police and Private Detective Buck Ames to report the murder. No one seems to know how or why the woman was on the set.