Calificación
Reparto

John Hart
Jack Armstrong

Rosemary La Planche
Betty Fairfield

Claire James
Princess Alura [Chs. 3-6, 9-11, 15]

Joe Brown Jr.
Billy Fairfield (as Joe Brown)

Pierre Watkin
Uncle Jim Fairfield

Wheeler Oakman
Prof. Hobart Zorn

Jack Ingram
Henchman Blair

Eddie Parker
Henchman Slade

Hugh Prosser
Vic Hardy