“Good heavens!” I exclaimed. “But what were Lawrence Cavendish’s finger-marks doing on it? He never went near the poison cupboard the day we were there!”
“Oh, yes, he did!”
“Impossible! We were all together the whole time.”
Poirot shook his head.
“No, my friend, there was a moment when you were not all together. There was a moment when you could not have been all together, or it would not have been necessary to call to Monsieur
“Good heavens!” I exclaimed. “But what were Lawrence Cavendish’s finger-marks doing on it? He never went near the poison cupboard the day we were there!”
“Oh, yes, he did!”
“Impossible! We were all together the whole time.”
Poirot shook his head.
“No, my friend, there was a moment when you were not all together. There was a moment when you could not have been all together, or it would not have been necessary to call to Monsieur
