“Really? Is that so, mon ami ?”

“Yes. Enlighten me, will you?”

Poirot studied me attentively for a moment or two. Then, to my intense surprise, he shook his head decidedly.

“No, my friend.”

“Oh, look here, why not?”

“Two is enough for a secret.”

“Well, I think it is very unfair to keep back facts from me.”

“I am not keeping back facts. Every fact that I know is in your possession. You can draw your own deductions from them. This time it is a question of ideas.”

“Still, it would be interesting to know.”