Chinese sleuth Charlie Chan discovers a scheme for the theft of government radar plans while investigating several murders.
Sidney Toler
as Charlie Chan
Benson Fong
as Tommy Chan
Mantan Moreland
as Birmingham Brown, Chauffeur
Robert Homans
as Capt. Flynn
I. Stanford Jolley
as Rolf Brot, alias Ralph Brett
Virginia Brissac
as Mrs. Marsh
Jack Norton
as Willie Rand
Janet Shaw
as Gloria Bayne
Ben Carter
as Ben Carter
Victoria Faust
as Hulda Swenson / Janet Carter
Helen Deverell
as Diane Hall
Leonard Mudie
as Horace Karloss
