THE MASTER KEY - starring Milburn Stone
Classic Movie Serial
13 CHAPTERS - One of Germany's greatest obstacles to world domination is the industrial might of the United States. We need billions to subdue that might. And now we have the means of getting them -- the Orotron. With this machine we can produce unlimited gold." -- So speaks a mysterious voice broadcast to the men gathered around a table, each of whom has been admitted to the secret circle by means of a metal key. The voice belongs to an unseen Nazi ringleader known only as "The Master Key." Electronics expert Tom Brant, police detective Jack Ryan and reporter Janet Lowe must seek out the Nazis' secret cavernous hideout and destroy the Master Key to prevent the valuable invention from falling into enemy hands.