? ? ? ? "From the police I learned that Miss Morrison, who you remember went out that evening with Mrs. Barclay, denied having any knowledge of what it was which had caused the ill-humour in which her companion had returned.
? ? ? ? "Having gathered these facts, Watson, I smoked several pipes over them, trying to separate those which were crucial from others which were merely incidental. There could be no question that the most distinctive and suggestive point in the case was the singular disappearance of the door-key. A most careful search had failed to discover it in the room. Therefore it must have been taken from it. But neither the colonel nor the colonel's wife could have taken it. That was perfectly clear. Therefore a third person must have entered the room. And that third person could only have come in through the window. It seemed to me that a careful examination of the room and the lawn might possibly reveal some traces of this mysterious individual.
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