Rowland V. Lee Director Warner Oland Dr. Fu Manchu Actor Neil Hamilton Dr. Jack Petrie Actor Jean Arthur Lia Eltham Actor O.P. Heggie Inspector Nayland Smith Actor William Austin Sylvester Wadsworth Actor Claude King Sir John Petrie Actor Charles A. Stevenson Gen. Petrie Actor Evelyn Selbie Fai Lu Actor Noble Johnson Li Po Actor Lloyd Corrigan Screenwriter Florence Ryerson Screenwriter