Agatha Christie: The Mysterious Affair at Styles

CHAPTER 4. POIROT INVESTIGATES (continued)

"Therefore she drank it between then and half-past eight-- certainly not much later. Well, strychnine is a fairly rapid poison. Its effects would be felt very soon, probably in about an hour. Yet, in Mrs. Inglethorp's case, the symptoms do not manifest themselves until five o'clock the next morning: nine hours! But a heavy meal, taken at about the same time as the poison, might retard its effects, though hardly to that extent. Still, it is a possibility to be taken into account. But, according to you, she ate very little for supper, and yet the symptoms do not develop until early the next morning! Now that is a curious circumstance, my friend. Something may arise at the autopsy to explain it. In the meantime, remember it."

As we neared the house, John came out and met us. His face looked weary and haggard.

"This is a very dreadful business, Monsieur Poirot," he said. "Hastings has explained to you that we are anxious for no publicity?"

"I comprehend perfectly."

"You see, it is only suspicion so far. We have nothing to go upon."

"Precisely. It is a matter of precaution only."

John turned to me, taking out his cigarette-case, and lighting a cigarette as he did so.

"You know that fellow Inglethorp is back?"

"Yes. I met him."

John flung the match into an adjacent flower bed, a proceeding which was too much for Poirot's feelings. He retrieved it, and buried it neatly.

"It's jolly difficult to know how to treat him."

"That difficulty will not exist long," pronounced Poirot quietly.

John looked puzzled, not quite understanding the portent of this cryptic saying. He handed the two keys which Dr. Bauerstein had given him to me.