I have said often, in jotting down from my book a few of the most interesting cases which have come to my notice, that I am no detective, nor do I pretend to the smallest gift of foresight above my fellow man. Whenever I have busied myself about some trouble it has been from a personal motive which drove me on, or in the hope of serving some one who henceforth should serve me. And never have I brought to my aid other weapon than a certain measure of common sense. In many instances the purest good chance has given to me my only clue; the merest accident has set me straight when a hundred roads lay before me. I had come to Lady Faber's house hoping that the sight of some stranger, a chance word, or even an impulse might cast light upon the darkness in which we had walked for many weeks. Yet the longer I stayed in the ball-room the more futile did the whole thing seem. Though I knew that a nimble-fingered gentleman might be at my very elbow, that half-a-dozen others might be dancing cheerfully about me in that way of life to which their rascality had called them, I had not so much as a hand-breadth of suspicion; saw no face that was not the face of the dancing ass, or the smart man about town; did not observe a single creature who led me to hazard a question. And so profound at last was my disgust that I elbowed my way from the ball-room in despair; and went again to the conservatory where the palms waved seductively, and the flying corks of the champagne bottles made music harmonious to hear.

There were few people in this room at the moment—old General Sharard, who was never yet known to leave a refreshment table until the supper table was set; the Rev. Arthur Mellbank, the curate of St. Peter's, sipping tea; a lean youth who ate an ice with the relish of a schoolboy; and the ubiquitous Sibyl Kavanagh, who has been vulgarly described as a garrison hack. She was a woman of many partialties, whom every one saw at every dance, and then asked how she got there—a woman with sufficient personal attraction left to remind you that she was passé, and sufficient wit to make an interval tolerable. I, as a rule, had danced once with her, and then avoided both her program and her chatter; but now that I came suddenly upon her, she cried out with a delicious pretence of artlessness, and ostentatiously made room for me at her side.

"Do get me another cup of tea," she said; "I've been talking for ten minutes to Colonel Harner, who has just come from the great thirst land, and I've caught it."

"You'll ruin your nerves," said I, as I fetched her the cup, "and you'll miss the next dance."

"I'll sit it out with you," she cried gushingly; "and as for nerves, I haven't got any. I must have shed them with my first teeth. But I want to talk to you—you've heard the news, of course! Isn't it dreadful?"

She said this with a beautiful look of sadness, and for a moment I did not know to what she referred. Then it dawned upon my mind that she had heard of Lady Faber's loss.

"Yes," said I, "it's the profoundest mystery I have ever known."

"And can't you think of any explanation at all?" she asked, as she drank her tea at a draught. "Isn't it possible to suspect some one just to pass the time?"

"If you can suggest any one," said I, "we will begin with pleasure."

"Well, there's no one in this room to think of, is there?" she asked with her limpid laugh; "of course you couldn't search the curate's pockets, unless sermons were missing instead of rubies?"