The Campbell Playhouse -  (1938–40) was a CBS radio drama series directed by and starring Orson Welles.

 
CRMT - As with Himan Brown's prior Inner Sanctum Mysteries, each episode of CBS Radio Mystery Theater opened and closed with the ominous sound of a creaking crypt door, accompanied by Marshall's disturbing utterance, "Come in!... Welcome. I'm E. G. Marshall." This was followed by one of Marshall's other catchphrases, usually either "The sound of suspense" or "The fear you can hear." At the conclusion, the door would swing shut, preceded by Marshall's classic sign off, "Until next time, pleasant... dreams?"