Page:Bat Wing 1921.djvu/279

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My Theory of the Crime
271

several particulars I find myself nearer to the truth. But the definite establishment or shattering of your theory rests upon one thing.”

“What’s that?” I asked. “You are surely not thinking of the bat wing nailed upon the door?”

“Not at all,” he replied. “I am thinking of the seventh yew tree from the northeast corner of the Tudor garden.”