Some couples play golf, and some like to travel. Pam and Jerry North spend their quality time putting their amateur sleuth skills to work in Mr. and Mrs. North. One of radio’s most popular detective shows, the adventures of the Norths sprang from the pages of novels and kept listeners guessing for over a decade. We’ll hear three of their adventures starring Barbara Britton as Pam and Richard Denning as Jerry: “Coat of Arms,” “Die Hard,” and “Masquerade.”