Orson Welles adapted the novel as a one-hour radio play for the November 12, 1939, episode of the Campbell Playhouse. Welles himself played both Dr. Sheppard and Hercule Poirot.

  • Adapter: Howard Koch and Wyllis Cooper
  • Producer: John Houseman and Orson Welles
  • Director: Orson Welles

Cast:

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