"The letter, for the possession of which I believe this crime to have been perpetrated, was found by us in a supposedly secret drawer of this gentleman's desk. It was much crumpled, and bore evidences of having been rather rudely dealt with since it was last seen in Mrs. Van Burnam's hand in that very office.

"But the fact which is most convincing, and which will tell most heavily against him, is the unexpected discovery of the murdered lady's rings, also in this same desk. How you became aware that anything of such importance could be found there, knowing even the exact place in which they were secreted, I will not stop to ask at this moment. Enough that when your maid entered the Van Burnam offices and insisted with so much ingenuousness that she was expected by Mr. Van Burnam and would wait for his return, the clerk most devoted to my interests became distrustful of her intentions, having been told to be on the look-out for a girl in gray or a lady in black with puffs on each side of two very sharp eyes. You will pardon me, Miss Butterworth. He therefore kept his eyes on the girl and presently espied her stretching out her hand towards a hook at the side of Mr. Franklin Van Burnam's desk. As it is upon this hook this gentleman strings his unanswered letters, the clerk rose from his place as quickly as possible, and coming forward with every appearance of polite solicitude,—did she not say he was polite, Miss Butterworth?—inquired what she wished, thinking she was after some letter, or possibly anxious for a specimen of some one's handwriting. But she gave him no other reply than a blush and a confused look, for which you must rebuke her, Miss Butterworth, if you are going to continue to employ her as your agent in these very delicate affairs. And she made another mistake. She should not have left so abruptly upon detection, for that gave the clerk an opportunity to telephone for me, which he immediately did. I was at liberty, and I came at once, and, after hearing his story, decided that what was of interest to you must be of interest to me, and so took a look at the letters she had handled, and discovered, what she also must have discovered before she let them slip from her hand, that the five missing rings we were all in search of were hanging on this same hook amid the sheets of Franklin's correspondence. You can imagine, madam, my satisfaction, and the gratitude which I felt towards my agent, who by his quickness had retained to me the honors of a discovery which it would have been injurious to my pride to have had confined entirely to yourself."

"I can understand," I repeated, and trusted myself to say no more, hot as my secret felt upon my lips.

"You have read Poe's story of the filigree basket?" he now suggested, running his finger up and down the filigree work he himself held.

I nodded. I saw what he meant at once.

"Well, the principle involved in that story explains the presence of the rings in the midst of this stack of letters. Franklin Van Burnam, if he is the murderer of his sister-in-law, is one of the subtlest villains this city has ever produced, and knowing that, if once suspected, every secret drawer and professed hiding-place within his reach would be searched, he put these dangerous evidences of his guilt in a place so conspicuous, and yet so little likely to attract attention, that even so old a hand as myself did not think of looking for them there."

He had finished, and the look he gave me was for myself alone.

"And now, madam," said he, "that I have stated the facts of the case against Franklin Van Burnam, has not the moment come for you to show your appreciation of my good nature by a corresponding show of confidence on your part?"

I answered with a distinct negative. "There is too much that is unexplained as yet in your case against Franklin," I objected. "You have shown that he had motive for the murder and that he was connected more or less intimately with the crime we are considering, but you have by no means explained all the phenomena accompanying this tragedy. How, for instance, do you account for Mrs. Van Burnam's whim in changing her clothing, if her brother-in-law, instead of her husband, was her companion at the Hotel D——?"

You see I was determined to know the whole story before introducing Miss Oliver's name into this complication.