hypothesis that somebody else had inserted the original key in the lock of the despatch-case.”
“Yes,” I said, “Alfred Inglethorp, without doubt.”
Poirot looked at me curiously.
“You are very sure of his guilt?”
“Well, naturally. Every fresh circumstance seems to establish it more clearly.”
“On the contrary,” said Poirot quietly, “there are several points in his favour.”
“Oh, come now!”
“Yes.”
“I see only one.”
“And that?”
“That he was not in the house last night.”
” ‘Bad shot!’ as you
“Not last night, sir, I know she didn’t.”
“Why do you know so positively?”
“Because the box was empty. She took the last one two days ago, and she didn’t have any more made up.”
“You are quite sure of that?”
“Positive, sir.”
“Then that is cleared up! By the way, your mistress didn’t ask you to sign any paper yesterday?”