Cast
Tom Brown
as 'Smilin' Jack' Martin
Marjorie Lord
as Janet Thompson
Rose Hobart
as Trudy Muller, aka Fraulein von Teufel
Keye Luke
as Captain Wing
Edgar Barrier
as Tommy Thompson
Cyril Delevanti
as Mah Ling / Han Po, his double
Philip Ahn
as Wu Tan
Turhan Bey
as Kageyama [Chs. 1-5, 12-13]
Sidney Toler
as General Kai Ling [Chs. 1-5, 13]
Jay Novello
as Kushimi, infiltrator [Chs. 1-3, 12-13]