Messieurs, mesdames, said Poirot, with a flourish, "let me introduce you to the murderer, Mr. Alfred Inglethorp!" 164 Chapter 13 POIROT EXPLAINS "Poirot, you old villain," I said, "I've half a mind to strangle you! 
When Poirot introduced Mr. Alfred Inglethorp as the murderer to the audience, Mr. Inglethorp responds saying he wishes to strangle Poirot.
Mr. Inglethorp introduces Poirot as the murderer to the audience, and Poirot responds with harsh skepticism.