If you’re new to the site and would like to get involved please click on one of the buttons in the box below.
Poirot's mind raced back over the details of Achille Poirot's career. Had all that really happened?
"Only for a short space of time,"
Since the "Achille" that appears in "The big four" is grown-up, if he were a real person he could not have been Hercule's brother "For a short space of time". The inference is that he was imagined for a short space of time.