Charlie Chan is an agent of the US government working in Washington DC and he is assigned to investigate the murder of the inventor of a highly advanced torpedo. Aiding Chan is his overeager but dull-witted son Tommy and his daughter Iris.
Sidney Toler
Charlie Chan
Mantan Moreland
Birmingham Brown
Arthur Loft
Inspector Jones
Gwen Kenyon
Inez Arranto
Sarah Edwards
Mrs. Hargue
George J. Lewis
Paul Arranto
Marianne Quon
Iris Chan
Benson Fong
Tommie Chan
