While visiting the circus with his family, Charlie is recruited by the big top's co-owner to investigate threatening letters that he's received.
Cast
Warner Oland
Charlie Chan
Keye Luke
Lee Chan
John McGuire
Hal Blake
Shirley Deane
Louise Norman
Francis Ford
John Gaines
J. Carrol Naish
Tom Holt
Paul Stanton
Joe Kinney
Boothe Howard
Dan Farrell
Drue Leyton
Nellie Farrell
Wade Boteler
Lt. Macy
Shia Jung
Su Toy
George Brasno
Colonel Tim
Olive Brasno
Lady Tiny
Maxine Reiner
Marie Norman
Franklyn Farnum
Mike - Ticket Taker
Crew
Harry Lachman
Director
Robert Ellis
Writer
Helen Logan
Screenplay
Alex Troffey
Editor
Daniel B. Clark
Director of Photography
William Eckhardt
Assistant Director
John Stone
Associate Producer
William Lambert
Costume Supervisor
Arthur von Kirbach
Sound
Samuel Kaylin
Music Director
Earl Derr Biggers
Characters
Duncan Cramer
Art Direction
