Top Billed Cast

1. 

   Warren Hull

   Mandrake the Magician

2. 

   Doris Weston

   Betty Houston

3. 

   Al Kikume

   Lothar

4. 

   Rex Downing

   Tommy Houston

5. 

   Edward Earle

   Dr. Andre Bennett

6. 

   Forbes Murray

   Professor Houston

7. 

   Kenneth MacDonald

   James Webster

8. 

   Don Beddoe

   Frank Raymond

9. 

   Dick Curtis

   Dorgan

10. 

    John Tyrrell

    Dirk

11. 

    Stanley Brown

    Green

12. 

    Beatrice Curtis

    Rest Home Nurse

13. 

    Robert Sterling

    Henchman

14. 

    Sam Ash

    George Regan

15. 

    Lester Dorr

    Gray

16. 

    Ernie Adams

    Brown

17. 

    Eddie Fetherston

    Rest Home Henchman

18. 

    Eddie Foster

    Ed

19. 

    Knox Manning

    Narrator

20. 

    Ernie Alexander

    Cabbie

21. 

    Harry Bernard

    Construction Camp Watchman

22. 

    Stanley Blystone

    Henchman CX12

23. 

    Buel Bryant

    Rest Home & Ironworks Henchman

24. 

    Budd Buster

    Construction Camp Henchman

25. 

    George Chesebro

    Baker

26. 

    Charles Dorety

    Mill River Inn Henchman

27. 

    Jerry Frank

    Harper Drive Henchman

28. 

    Kit Guard

    Powerhouse Henchman

29. 

    Frank Hagney

    Harris

30. 

    Chuck Hamilton

    Bank Henchman

31. 

    Eddie Hart

    Williams

32. 

    Oscar 'Dutch' Hendrian

    Powerhouse Henchman

33. 

    Jerry Jerome

    Ward

34. 

    Eddie Laughton

    Kidnapping Henchman

35. 

    Tom London

    Mill River Inn Henchman

36. 

    Stanley Mack

    Roadster Henchman

37. 

    Pat McKee

    Dam Henchman

38. 

    Charles McMurphy

    Construction Foreman

39. 

    Frank Mills

    Gas Station Hitman

40. 

    Art Mix

    Ironworks Henchman

41. 

    Eddie Parker

    Henchman

42. 

    Ralph Peters

    Mohawk Steward-Henchman

43. 

    Rose Plumer

    Ship Passenger

44. 

    Cyril Ring

    Magic Mart Henchman

45. 

    Cy Schindell

    Bank Henchman

46. 

    Charles Sherlock

    Ship Henchman

47. 

    Reginald Simpson

    Parsons

48. 

    Tom Steele

    Powerhouse Henchman

49. 

    Charles Sullivan

    Henchman-Driver

50. 

    Harry Tenbrook

    Streeter

51. 

    George Turner

    Apartment-Raider

52. 

    Frank Wayne

    Henchman

53. 

    Blackie Whiteford

    Construction Camp Henchman

54. 

    Bud Wolfe

    Tower Henchman

55. 

    Bert Young

    Rest Home Henchman

56. 

    Steve Clark

    Henchman (uncredited)