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"Thank you. We have certainly been favoured with extraordinary

luck during this inquiry, and it will be entirely our own fault

if we do not succeed in clearing the matter up. With your

permission, Mr. Holder, I shall now continue my investigations

outside."

He went alone, at his own request, for he explained that any

unnecessary footmarks might make his task more difficult. For an

hour or more he was at work, returning at last with his feet

heavy with snow and his features as inscrutable as ever.

"I think that I have seen now all that there is to see, Mr.

Holder," said he; "I can serve you best by returning to my

rooms."

"But the gems, Mr. Holmes. Where are they?"

"I cannot tell."

The banker wrung his hands. "I shall never see them again!" he

cried. "And my son? You give me hopes?"

"My opinion is in no way altered."

"Then, for God's sake, what was this dark business which was

acted in my house last night?"