The Thirteenth Sound: A Widow’s Alibi and the Noise That Undid Her

Originally Aired: February 13, 1947 In Suspense #232, “The Thirteenth Sound,” Mrs. Sally Skinner is the perfect widow: poised, respected, and seemingly heartbroken after her husband's mysterious shooting. But behind her calm demeanor is a cold-blooded killer—whose perfect murder begins to unravel not from evidence, but from a sound. At the coroner's inquest and again during a concert, a specific noise—a blackboard scratch, a dissonant tone—triggers a violent response in Sally, revealing cracks in her composure. Agnes Moorehead delivers a riveting performance in this psychological thriller where guilt echoes louder than any proof. Cast: Agnes Moorehead, William Johnstone Tags: Suspense, thriller, AgnesMoorehead, psychological, murder, guilt, dissonance, soundtrigger, oldtimeradio, 1940sradio, classicdrama, suspensepodcast, noir, blackboard, killerinstinct