Overview
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
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