". . . Orient Express" sleuth (6)

I believe the answer is:

poirot

(Other definitions for poirot that I've seen before include "Hercule --, fictional detective" , "Hercule -, detective (Agatha Christie)" , "Fill; live in" , "Hercule . . . . . ., Agatha Christie's detective" , "... and her male one" .)

I've seen this clue in the Newsday.

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