The Cornish Mystery: a Hercule Poirot Short Story

A wife is convinced that her husband has been trying to poison her and run off with a younger woman, and she begs Hercule Poirot to save her. Poirot and Hastings act quickly but, was it fast enough?

Librarian's note: this entry is for the story, "The Cornish Mystery." Collections of short stories by the author can be found elsewhere on Goodreads. Individual entries, including the characters and settings, for all 51 Poirot short stories, plus a 52nd, "Hercule Poirot and the Greenshore Folly" which was discovered in 2014, can be found by searching Goodreads for: "a Hercule Poirot Short Story."