“But it was a glorious day!” I interrupted. “Poirot, you’re pulling my leg!”

“Not at all. The thermometer registered 80 degrees in the shade. Do not forget that, my friend. It is the key to the whole riddle!”

“And the second point?” I asked.

“The important fact that Monsieur Inglethorp wears very peculiar clothes, has a black beard, and uses glasses.”

“Poirot, I cannot believe you are serious.”

“I am absolutely serious, my friend.”

“But this is childish!”

“No, it is very momentous.”

“And supposing the Coroner’s jury returns a verdict of Wilful Murder against Alfred Inglethorp. What becomes of your theories, then?”