The Mystery of 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

?

Lotus Long

Drina

Chester Gan

Sing

Hooper Atchley

Carslake

?

Bruce Wong

Asian Man

?

Jack Kennedy

Police Guard

Lee Tung Foo

Willie

Wilbur Mack

Ballstics Expert

?

Dick Morehead

Police Detective