Agatha Christie: The Mysterious Affair at Styles

CHAPTER 8. FRESH SUSPICIONS (continued)

"The two often go together," said Poirot enigmatically.

The remark seemed so utterly irrelevant that I did not even take the trouble to answer it. But I decided that if I made any interesting and important discoveries--as no doubt I should--I would keep them to myself, and surprise Poirot with the ultimate result.

There are times when it is one's duty to assert oneself.