This is all very ingenious, but I'm afraid Monsieur Poirot doesn't really mean it. He keeps deliberately changing his story. First, poor Jane killed Giselle. And now her daughter did.
No, no, no, Monsieur Gale, the daughter did not kill the mother. The maid of Lady Horbury, she left the first-class cabin at the start of the flight, and we know that Madame Giselle did not die until shortly before we landed.
Then how did she die?
You will recall, Monsieur Gale, that I asked you to disguise yourself as a reporter to go to see Lady Horbury.
What, he was...
I apologize for the deceit, madame. But you know, at first, the disguise of Monsieur Gale, it was hopelessly unconvincing, hein? But why? Why was the disguise of Monsieur Gale so unconvincing? There are two reasons for this. First, to make me believe that it would be impossible for him to impersonate the mysterious American. And secondly, and most important of all, to ensure that I would never learn the truth about how this murder was committed.
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