I Love A Mystery was an old-time radio program that ran from January, 1939 to December 1944 on NBC. Following its cancellation the show show was revived, and ran from 1949 to 1952. I Love a Mystery was a serial drama with one fifteen minute episode airing each day, Monday through Friday. For a time the show switched to the more conventional schedule of one half hour broadcast each week, but eventually returned to the five program a week model. The Valse Triste by Jean Sibelius serves as the theme music.