"Do you not think, then, that he might have been trying to straighten it?"

"God bless you! You are doing what you can for him and for me. But it is too heavy a task. What was he doing there at all? If his purpose were innocent, why did he not say so?"

"Precisely. And if it were guilty, why did he not invent a lie? His silence appears to me to cut both ways. There are several singular points about the case. What did the police think of the noise which awoke you from your sleep?"

"They considered that it might be caused by Arthur's closing his bedroom door."

"A likely story! As if a man bent on felony would slam his door so as to wake a household. What did they say, then, of the disappearance of these gems?"

"They are still sounding the planking and probing the furniture in the hope of finding them."

"Have they thought of looking outside the house?"

"Yes, they have shown extraordinary energy. The whole garden has already been minutely examined."

"Now, my dear sir," said Holmes, "is it not obvious to you now that this matter really strikes very much deeper than either you or the police were at first inclined to think? It appeared to you to be a simple case; to me it seems exceedingly complex. Consider what is involved by your theory. You suppose that your son came down from his bed, went, at great risk, to your dressing-room, opened your bureau, took out your coronet, broke off by main force a small portion of it, went off to some other place, concealed three gems out of the thirty-nine, with such skill that nobody can find them, and then returned with the other thirty-six into the room in which he exposed himself to the greatest danger of being discovered. I ask you now, is such a theory tenable?"

"But what other is there?" cried the banker with a gesture of despair. "If his motives were innocent, why does he not explain them?"

"It is our task to find that out," replied Holmes; "so now, if you please, Mr. Holder, we will set off for Streatham together, and devote an hour to glancing a little more closely into details."

My friend insisted upon my accompanying them in their expedition, which I was eager enough to do, for my curiosity and sympathy were deeply stirred by the story to which we had listened. I confess that the guilt of the banker's son appeared to me to be as obvious as it did to his unhappy father, but still I had such faith in Holmes' judgment that I felt that there must be some grounds for hope as long as he was dissatisfied with the accepted explanation. He hardly spoke a word the whole way out to the southern suburb, but sat with his chin upon his breast and his hat drawn over his eyes, sunk in the deepest thought. Our client appeared to have taken fresh heart at the little glimpse of hope which had been presented to him, and he even broke into a desultory chat with me over his business affairs. A short railway journey and a shorter walk brought us to Fairbank, the modest residence of the great financier.