In 1948, motion-picture actor Alan Ladd teamed up with an old business associate named Bernie Joslin and created Mayfair Productions, a radio syndication company. In Box Thirteen, Ladd played the role of former reporter turned novelist, Dan Holiday. Dan never knows what adventure awaits him when he collects his mail from Box Thirteen at the Star-Times, which is always jammed with many potential adventures for him to choose from. Whatever the case, he always finds fascinating stories when he opens Box Thirteen.