THE LEVER KEY
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in the cab-journey—perhaps not in a week of study. The man who devised this is a man of abilities altogether beyond the average."
"I have had my best try at it," I said, "but it beats me wholly. I brought it purely as a matter of curiosity, to show you; it was the merest chance that I brought the key as well."
"And if you hadn't I should probably have put the cypher aside until the case was over, and so have missed the whole thing. Another lesson never to despise what seem like trifles. If you have studied the cypher you have no doubt observed—but there, we'll talk that over afterwards, and the whole case if you like. I'll go now, and I'll tell you all about the business when time permits."
