“But that has already been tested!” I cried, stupefied. “Dr. Bauerstein had it tested, and you yourself laughed at the possibility of there being strychnine in it.”
“I know Dr. Bauerstein had it tested,” replied Poirot quietly.
“Well, then?”
“Well, I have a fancy for having it analysed again, that is all.”
And not another word on the subject could I drag out of him.
This proceeding of Poirot’s, in respect of the coco, puzzled me intensely. I could see neither rhyme nor reason in it. However,
We stared at one another blankly. Poirot had walked over to the mantelpiece. He was outwardly calm, but I noticed his hands, which from long force of habit were mechanically straightening the spill vases on the mantelpiece, were shaking violently.
“See here, it was like this,” he said at last. “There