"Here!" Mr. Gryce took one hurried step toward the door, then came gravely back. "I can restrain myself," he said. "If she is here, she will not go till I have seen her. Are you sure you have made no mistake; that she is the woman we are after; the woman who was in Mr. Adams's house and sent us the warning?" "Will you hear my story, sir? It will take only a moment. Then you can judge for yourself." "Your story? It must be a pretty one. How came you to light on this woman so soon? By using the clew I gave you?" Again Sweetwater's expression took on a touch of naivete. "I'm sorry, sir; but I was egotistical enough to follow my own idea. It would have taken too much time to hunt up all the drivers of hacks in the city, and I could not even be sure she had made use of a public conveyance. No, sir; I bethought me of another way by which I might reach this woman. You had shown me those spangles. They were portions of a very rich trimming; a trimming which has only lately come into vogue, and which is so expensive that it is worn chiefly by women of means, and sold only in shops where elaborate garnitures are to be found. I have seen and noticed dresses thus trimmed, in certain windows and on certain ladies; and before you showed me the spangles you picked up in Mr. Adams's study could have told you just how I had seen them arranged. They are sewed on black net, in figures, sir; in scrolls or wreaths or whatever you choose to call them; and so conspicuous are these wreaths or figures, owing to the brilliance of the spangles composing them, that any break in their continuity is plainly apparent, especially if the net be worn over a color, as is frequently the case. Remembering this, and recalling the fact that these spangles doubtless fell from one of the front breadths, where their loss would attract not only the attention of others, but that of the wearer, I said to myself, 'What will she be likely to do when she finds her dress thus disfigured?' And the answer at once came: 'If she is the lady Mr. Gryce considers her, she will seek to restore these missing spangles, especially if they were lost on a scene of crime. But where can she get them to sew on? From an extra piece of net of the same style. But she will not be apt to have an extra piece of net. She will, therefore, find herself obliged to buy it, and since only a few spangles are lacking, she will buy the veriest strip.' Here, then, was my clew, or at least my ground for action. Going the rounds of the few leading stores on Broadway, 23d Street, and Sixth Avenue, I succeeded in getting certain clerks interested in my efforts, so that I speedily became assured that if a lady came into these stores for a very small portion of this bespangled net, they would note her person and, if possible, procure some clew to her address. Then I took up my stand at Arnold's emporium. Why Arnold's? I do not know. Perhaps my good genius meant me to be successful in this quest; but whether