I heard you say to the detectives, you surely cannot still believe in the possibility of Alfred Inglethorp’s innocence?”

“Why not now as much as before? Nothing has changed.”

“But the evidence is so conclusive.”

“Yes, too conclusive.”

We turned in at the gate of Leastways Cottage, and proceeded up the now familiar stairs.

“Yes, yes, too conclusive,” continued Poirot, almost to himself. “Real evidence is usually vague and unsatisfactory. It has to be examined—sifted. But here the whole thing

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