Suspicion

(1935)

Mystery

Did you hear the hidden clue that first cast the culprit in Suspicion?  This early mystery program's hook was that each episode contained an aural clue to the identity of the perpetrator.  It could be a sentence, a sound effect, or even a whole scene that implicated the villain of the piece.  The specific occurrence was not revealed at the end of the episode, but instead was revealed at the beginning of the next show.  Listeners were encouraged to write in with what scene or sound revealed the criminal and match their answer with the reveal.