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After Wilson leaves, Watson confesses that the case is completely obscure to him. Holmes argues that strange features often make a mystery simpler, while commonplace crimes are harder to distinguish from one another. Despite that confidence, he says that this particular affair requires prompt action.
"Well, Watson," said Holmes when our visitor had left us, "what do you make of it all?"
「さて、ワトソン」客が帰ってしまうと、ホームズが言った。「きみはこの一件をどう思うね?」
"I make nothing of it," I answered frankly. "It is a most mysterious business."
「さっぱり分からないね」と私は正直に答えた。「なんとも不可解な話だよ」
"As a rule," said Holmes, "the more bizarre a thing is the less mysterious it proves to be. It is your commonplace, featureless crimes which are really puzzling, just as a commonplace face is the most difficult to identify. But I must be prompt over this matter."
「たいていの場合」とホームズは言った。「奇妙なことほど、かえって謎は浅いものなのだ。本当に頭を悩ませるのは、ありふれた、何の特徴もない犯罪のほうで、平凡な顔がいちばん見分けにくいのと同じことさ。だが、この件は急いで手を打たねばならない」
"What are you going to do, then?" I asked.
「それで、どうするつもりなんだい?」と私は尋ねた。