“ M. Poirot!” she said. “Now, what do you think of that?”

I thought a good many things of it, but I was careful not to say them to Caroline.

“Why did he come?” I asked.

“To see me, of course. He said that, knowing my brother so well, he hoped he might be permitted to make the acquaintance of his charming sister⁠—your charming sister, I’ve got mixed up, but you know what I mean.”

“What did he talk about?” I asked.

“He told me a lot about himself and his cases. You know that Prince Paul of Mauretania⁠—the one who’s just married a dancer?”

“Yes?”