5 Minute Mysteries

The Five Mysteries Program  is an  audience participation  radio series broadcast on the  Mutual Broadcasting System August 10, 1947 – March 27, 1950. In 1947-48 it aired on Sundays at 2 p.m. Such mysteries were produced and syndicated (1945-48) to individual local radio stations as a "barter-trade" program to sell advertising to local merchants or trade the advertising announcements for goods, services or premiums, such as prizes awarded to listeners in radio station contests or promotions.  To facilitate personalizing the shows to individual stations and insert the local ads, the producers put musical interludes in the shows with enough time for a local announcer to introduce the episode, present the advertiser's message and wrap things up with other local in