Charlie impersonates an employee of the U.S. government to foil an espionage plot which would destroy part of the Panama Canal, trapping a Navy fleet on its way to the Pacific after maneuvers in the Atlantic.
Sidney Toler
as Charlie Chan
Jean Rogers
as Kathi Lenesch (Baroness Kathi von Czardos)
Lionel Atwill
as Cliveden Compton
Mary Nash
as Miss Sarah Finch
Victor Sen Yung
as Jimmy Chan (as Sen Yung)
Kane Richmond
as Richard Cabot
Chris-Pin Martin
as Sergeant Montero
Lionel Royce
as Dr. Rudolph Grosser
Helen Ericson
as Stewardess
Jack La Rue
as Emil Manolo
Edwin Stanley
as Governor D.C. Webster
Donald Douglas
as Captain Lewis
