“Well, sir, she slipped it into a long envelope, and put it inside a sort of purple box that was standing on the desk.”
“What time was it when she first called you?”
“About four, I should say, sir.”
“Not earlier? Couldn’t it have been about half-past three?”
“No, I shouldn’t say so, sir. It would be more likely to be a bit after four—not before it.”
“Thank you, Manning, that will do,” said Poirot pleasantly.
The gardener glanced at his master, who nodded, whereupon Manning lifted a finger
on that cup, grinding it to powder, and the reason they did so was either because it contained strychnine or—which is far more serious—because it did not contain strychnine!”
I made no reply. I was bewildered, but I knew that it was no good asking him to explain. In a moment or two he roused himself,