"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
Jack Mower
as Police Guard at Apartment 26
Charmienne Harker
as Kelso's Secretary
Paul Bryar
as Desk Sergeant
Thornton Edwards
as Hotel Desk Clerk
Dimples Cooper
George Spaulding
as Dr. Hickey
Mary Chan
as Pedestrian (uncredited)
Thayer Cheek
as Chinese Boy (uncredited)
Kenneth Chuck
Tom Coleman
as Detective (uncredited)
Lee Tong Foo
as Armstrong's Butler (uncredited)
as Kelso's Stenographer (uncredited)
Joseph C. Narcisse
as Dock Worker (uncredited)
Cap Somers
Richard Wang
as Hamishin (uncredited)
William Beaudine
Director
Earl Derr Biggers
Characters
Scott Darling
Screenplay
Richard V. Heermance
Editor
Ace Herman
Raymond Boltz Jr.
Set Decoration
Kenneth Kessler
Assistant Director
James S. Burkett
Producer
William A. Calihan Jr.
Dave Milton
Art Direction
William A. Sickner
Director of Photography
Lela Chambers
Hairstylist
Harry Lewis
Grip
Lloyd Garnell
Gaffer