Cast 33

1. 

   Frank Buck

   Frank Hardy

2. 

   Sasha Siemel

   Tiger Van Dorn

3. 

   Reginald Denny

   Ralph Marshall

4. 

   Esther Ralston

   Valerie Shields

5. 

   Charlotte Henry

   Dorothy Elliott

6. 

   William Bakewell

   Tom Banning

7. 

   Clarence Muse

   Lightning

8. 

   Willie Fung

   Chiang-Houseboy

9. 

   LeRoy Mason

   Jim Murphy

10. 

    Matthew Betz

    Inspector Starrett

11. 

    Richard Tucker

    Robert Banning

12. 

    Duncan Renaldo

    Armand Roget

13. 

    Fred Kohler Jr.

    John Charles

14. 

    Sherwood Bailey

    Paul Marshall

15. 

    Harry 'Snub' Pollard

    Campbell

16. George Rosener

    Professor

17. 

    Gertrude Sutton

    Mrs. Maitland

18. 

    John St. Polis

    Chandler Elliott

19. 

    John Davidson

    Doctor Coleman

20. 

    Milburn Morante

    Singapore Joe

21. Dirk Thane

    Joe Nolan

22. 

    Robert Warwick

    Angus MacLeod

23. Dahlam Ali

    Hardy's Assistant

24. 

    Jim Corey

    Henchman

25. 

    Paul Ellis

    Greenway

26. Henry Hale

    Jackson

27. 

    Harry Harvey

    Roget Clerk #1

28. 

    Reed Howes

    Sailor

29. 

    Jack Ingram

    Undercover Detective at Dive

30. 

    Tom London

    Detective Interrogating Pete

31. Merrill McCormick

    Peters

32. 

    Blackie Whiteford

    Henchman

33. 

    Roger Williams

    Henchman

Crew 20