Hercule Poirot made his first public appearance in 1920 at the age, one guesses, of about 60. But it's very clear that his creator, Agatha Christie, did not at first intend for it to go that way. She made a very definite attempt to end the Hercule Poirot saga in the mid-1920s, when his story consisted simply of three novels and 25 short stories.
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