Agatha Christie: The Mysterious Affair at Styles

CHAPTER 7. POIROT PAYS HIS DEBTS (continued)

I was silent. And in a minute or two, Poirot continued:

"Let us look at the matter like this. Here is a man, let us say, who sets out to poison his wife. He has lived by his wits as the saying goes. Presumably, therefore, he has some wits. He is not altogether a fool. Well, how does he set about it? He goes boldly to the village chemist's and purchases strychnine under his own name, with a trumped up story about a dog which is bound to be proved absurd. He does not employ the poison that night. No, he waits until he has had a violent quarrel with her, of which the whole household is cognisant, and which naturally directs their suspicions upon him. He prepares no defence--no shadow of an alibi, yet he knows the chemist's assistant must necessarily come forward with the facts. Bah! do not ask me to believe that any man could be so idiotic! Only a lunatic, who wished to commit suicide by causing himself to be hanged, would act so!"

"Still--I do not see--" I began.

"Neither do I see. I tell you, mon ami, it puzzles me. Me --Hercule Poirot!"

"But if you believe him innocent, how do you explain his buying the strychnine?"

"Very simply. He did not buy it."

"But Mace recognized him!"

"I beg your pardon, he saw a man with a black beard like Mr. Inglethorp's, and wearing glasses like Mr. Inglethorp, and dressed in Mr. Inglethorp's rather noticeable clothes. He could not recognize a man whom he had probably only seen in the distance, since, you remember, he himself had only been in the village a fortnight, and Mrs. Inglethorp dealt principally with Coot's in Tadminster."

"Then you think----"

"Mon ami, do you remember the two points I laid stress upon? Leave the first one for the moment, what was the second?"