“Poirot,” I asked earnestly, “have you made up your mind about this crime?”
“Yes—that is to say, I believe I know how it was committed.”
“Ah!”
“Unfortunately, I have no proof beyond my surmise, unless—” With sudden energy, he caught me by the arm, and whirled me down the hall, calling out in French in his excitement: “Mademoiselle Dorcas, Mademoiselle Dorcas, un moment, s’il vous plaît !”
Dorcas, quite flurried by the noise, came hurrying out of the pantry.
“My good Dorcas, I have an idea—a little idea—if it should prove justified, what magnificent chance! Tell me, on Monday, not Tuesday, Dorcas, but Monday, the day before the tragedy, did anything go wrong with Mrs. Inglethorp’s bell?”
Dorcas looked very surprised.
“Yes, sir, now you mention it, it did; though I don’t know how you came to hear of it. A mouse, or some such, must have nibbled the wire through. The man came and put it right on Tuesday morning.”
With a long drawn exclamation of ecstasy, Poirot led the way back to the morning-room.
“See you, one should not ask for outside proof—no, reason should be enough. But the flesh is weak, it is consolation to find that one is on the right track. Ah, my friend, I am like a giant refreshed. I run! I leap!”
And, in very truth, run and leap he did, gambolling wildly down the stretch of lawn outside the long window.