This serial followed the careers of two unlikely adventurers named Black and Blue. They were shipping clerks in a Duluth market, but a yearning for adventure led them to a correspondence course in criminology. Using the motto "Detec-a-tives Black and Blue, good men tried and true," they opened an agency and promptly set the art of detection back 40 years. The shows were primitive, with virtually no sound effects, the "action" carried in dialogue. The cast is unknown._{John Dunning}