"I have already mentioned the peremptory tone in which Mr. Birchmore uniformly addressed the man Slurk, and the generally overbearing attitude he assumed towards him; but in the conversation now going forward all this was changed. To judge by appearances, I should have said that Slurk was the master, and Mr. Birchmore the valet. The former was gesticulating forcibly, and evidently laying down the law in a very decided and autocratic way. His square ungainly figure seemed to dilate, and take on a masterful and almost hectoring air; while Mr. Birchmore stood with his hands in his coat-pockets, undemonstrative and submissive, apparently accepting with meekness all that the other advanced, and only occasionally interpolating a remark or a suggestion, to which Slurk would pay but slight or impatient attention. Both were evidently talking in a low tone; for though they were not more than fifty or sixty yards from where I sat, I could not catch a single word, nor even so much as an inarticulate murmur, unless by deliberately straining my ears. But I did not need nor care to hear anything: what I saw was quite enough to startle and mystify me. "After a few minutes the two interlocutors moved slowly on up the path, and were soon beyond the field of my mirror. But the unexpected scene which I had witnessed did not so soon pass out of my mind. "I got up from my table and began walking about the room, with the restlessness of one who cannot make his new facts tally with his preconceived ideas. Who and what was Slurk, and how had he obtained ascendancy over a man like Birchmore? Certainly it could not be a natural ascendancy. Birchmore must have put himself in the other's power. In other words, Slurk must be blackmailing him. And this was the trouble, was it?--this was the mystery? It was an ugly and awkward business, certainly; but the main question remained after all unanswered. What was it that Birchmore had done to give Slurk a hold upon him? and had that act, whatever it was, compromised his daughter along with him? For now that I gathered up in my memory all the hints and signs which had come under my notice in relation to this affair, I could not help thinking that Kate's attitude had in it something suggestive of more than mere filial sympathy with her father's misfortune. In that misfortune or disgrace she had a personal and separate in addition to a sympathetic share. And yet, in what conceivable way could a low villain like Slurk fasten his gripe upon a pure and spotless young girl? and what a hideous thought--that such a girl should be in any way at his mercy! The more I turned the matter over in my mind, the more ugly did it appear. No wonder that father and daughter had warned me away. Some men in my position, having seen thus far, might have shrunk back and given up the enterprise. But I was not in that category. I was more than ever determined to see the adventure to its end; nay, to gain my own end in it too. The conditions of the