Mandrake and his team attempt to prevent "The Wasp" from stealing and using a new Radium invention.
Warren Hull | Mandrake the Magician |
Doris Weston | Betty Houston |
Al Kikume | Lothar |
Rex Downing | Tommy Houston |
Edward Earle | Dr. Andre Bennett |
Forbes Murray | Professor Houston |
Kenneth MacDonald | James Webster |
Don Beddoe | Frank Raymond |
Dick Curtis | Dorgan |
John Tyrrell | Dirk |
Stanley Brown | Green |
Beatrice Curtis | Rest Home Nurse |