Cast & Crew
- John KingAce Drummond
-
Jean RogersPeggy Trainor - Noah Beery Jr.Jerry
- Guy Bates PostThe Grand Lama
- Lon Chaney Jr.Henchman Ivan
- Jackie MorrowBilly Meredith
- Selmer JacksonWilliam Meredith Sr.
- Robert WarwickWinstom
- James B. LeongHenry Kee
- Chester GanKai-Chek
- Arthur LoftChang-Ho the Dragon
- James EaglesRadio Operator Johnny Wong
- C. Montague ShawDr. Trainor
- Frederick VogedingBauer
- Al BridgePaul Wyckoff