Générique complet
Le Mystère de Mr Wong
Boris Karloff
James Lee Wong
Grant Withers
Police Capt. Sam Street
Dorothy Tree
Valerie Edwards
Craig Reynolds
Peter Harrison
Ivan Lebedeff
Michael Strogonoff
Holmes Herbert
Prof. Ed Janney
Morgan Wallace
Brandon Edwards
LL
Lotus Long
Drina
Chester Gan
Sing
Hooper Atchley
Carslake
BW
Bruce Wong
Asian Man
JK
Jack Kennedy
Police Guard
Lee Tung Foo
Willie
Wilbur Mack
Ballstics Expert
DM
Dick Morehead
Police Detective
Joe Devlin
Police Lt. George Devlin
I. Stanford Jolley
Charades-Player
Réalisation
Scénario
Production
Scott R. Dunlap
Production exécutive
WL
William T. Lackey
Production
CB
Charles J. Bigelow
Production Manager