Box 13 was a syndicated radio drama that aired in various cities in the United States from October 1947. It starred Alan Ladd as Dan Holiday, a newspaperman turned mystery novelist seeking ideas for his fiction. He placed an ad in the newspaper reading "Adventure wanted, will go anywhere, do anything – write Box 13, Star-Times." Responding to the letters he received, Holiday found himself in various adventures involving crime-solving and mystery. The show was produced by Mayfair Productions and featured Sylvia Picker as Holiday's secretary Suzy and Edmund MacDonald as police Lt. Kling. Several guest actors appeared on the show, and the series was known for its high adventure and storytelling that didn't always involve a murder each week.