It is difficult to describe the shock that ran through me, that left me numbed and helpless. For an instant, I stumbled on, half-dazed; then, gradually, my self-control came back, and with it a certain fierce joy, a hot exultation. Here, at last, was something definite, tangible, a clew ready to my hand, if only I were clever enough to follow it up; a ray of light in the darkness! I could feel my cheeks burning, and my heart leaping at the thought! But what had been his part in the affair? For a moment, I groped blindly in the dark, but only for a moment. Whatever his share in the tragedy, he had plainly been left behind to watch us; to make sure that we did not follow the fugitives; to warn them in case of danger. I understood, now, his solicitude for Miss Holladay--"in her I take such an interest!" It was important that he should know the moment we discovered her absence. And he had known; he knew that I was even at this moment commencing the search for her. My cheeks reddened at the thought of my indiscreetness; yet he was a man to command confidence. Who would have suspected him? And an old proverb which he had repeated one evening, flashed through my mind: "Folle est la brebis qui au loup se confesse." "Silly is the sheep who to the wolf herself confesses," I had translated it, with that painful literalness characteristic of the beginner. Well, I had been the sheep, and silly enough, Heaven knows! I had reached Broadway, and at the corner I paused to look at a display of men's furnishings in a window. Far down the street, on the other side, almost lost in the hurrying crowd, Martigny was buying a paper of a newsboy. He shook it out and looked quickly up and down its columns, like a man who is searching for some special item of news. Perhaps he _was_ a speculator; perhaps, after all, I was deceiving myself in imagining that he was following me. I had no proof of it; it was the most natural thing in the world that he should be in this part of the town. I must test the theory before accepting it. It was time I grew wary of theories. I entered the store, and spent ten minutes looking at some neckties. When I came out again, Martigny was just getting down from a bootblack's chair across the street. His back was toward me, and I watched him get out his little purse and drop a dime into the bootblack's hand. I went on up Broadway, loitering sometimes, sometimes walking straight ahead; always, away behind me, lost in the crowd, was my pursuer. It could no longer be doubted. He was really following me, though he did it so adroitly, with such consummate cunning, that I should never have seen him, never have suspected him, but for that fortunate intuition at the start.