I had had no opportunity as yet of passing on Poirot's message to Lawrence. But now, as I strolled out on the lawn, still nursing a grudge against my friend's high-handedness, I saw Lawrence on the croquet lawn, aimlessly knocking a couple of very ancient balls about, with a still more ancient mallet.
It struck me that it would be a good opportunity to deliver my message. Otherwise, Poirot himself might relieve me of it. It was true that I did not quite gather its purport, but I flattered myself that by Lawrence's reply, and perhaps a little skillful cross-examination on my part, I should soon perceive its significance. Accordingly I accosted him.
"I've been looking for you," I remarked untruthfully.
"Have you?"
"Yes. The truth is, I've got a message for you--from Poirot."
"Yes?"
"He told me to wait until I was alone with you," I said, dropping my voice significantly, and watching him intently out of the corner of my eye. I have always been rather good at what is called, I believe, creating an atmosphere.
"Well?"
There was no change of expression in the dark melancholic face. Had he any idea of what I was about to say?
"This is the message." I dropped my voice still lower. " 'Find the extra coffee-cup, and you can rest in peace.' "
"What on earth does he mean?" Lawrence stared at me in quite unaffected astonishment.