What happens
Steve Pearson, an assistant to the magician Fred Marlowe, falls in love with Marlowe's wife, Claire, and the two plot to kill him with ground glass in his water during his act. Steve's guilt grows when Marlowe's ventriloquist dummy, Petey, seems to speak to him. Steve and Claire try to dispose of a trunk containing a body on a ship bound for South America, and their plans begin to unravel. Inner Sanctum Mysteries presents The Deadly Dummy, written by Ed Adams and Robert Sloane, with Mason Adams as Steve and Elspeth Eric as Claire, first broadcast on 1949-01-24.
A stage theatre, a hotel room, and an ocean liner
Characters: Steve Pearson, Claire Marlowe, Fred Marlowe, Petey, Beatty, Ralph Kramer, Inspector
Listen for: Steve's mounting unease as Petey the dummy seems to speak, and the trunk aboard the ship
Written from the episode itself; it never gives away the ending. Every recording is remastered for the stream: cleaned of rumble, hiss and mains hum (and the old TV whine where we found it), then levelled in two passes to steady broadcast loudness, so one show is never quieter than the next.