Soon after a Chinese princess comes to the US to buy planes for her people, she is murdered by a poison dart fired by an air rifle.
Roland Winters
as Charlie Chan
Warren Douglas
as Sgt. Bill Davidson
Louise Currie
as Peggy Cartwright
Mantan Moreland
as Birmingham Brown
Victor Sen Yung
as Tommy Chan
Philip Ahn
as Captain Kong
Thayer Roberts
as Captain James J. Kelso
Byron Foulger
as Armstrong
Jean Wong
as Princess Mei Ling
Spencer Chan
as Cargo Officer
Chabing
as Lillie Mae Wong
Lee Tung Foo
as Armstrong's Majordomo
