Chinese sleuth Charlie Chan discovers a scheme for the theft of government radar plans while investigating several murders.
Sidney Toler
Charlie Chan
Benson Fong
Tommy Chan
Mantan Moreland
Birmingham Brown, Chauffeur
Robert Homans
Capt. Flynn
I. Stanford Jolley
Rolf Brot, alias Ralph Brett
Virginia Brissac
Mrs. Marsh
Jack Norton
Willie Rand
Janet Shaw
Gloria Bayne
