With the morning’s light I looked carefully over the captured overcoat for identifying marks by which I might trace the elusive spy who was so near ending my life. A hasty survey of the garment when I had reached my room had revealed nothing by which I might learn of the owner; but after a night’s sleep the detective instinct burned within me, and I was persuaded that there was something about it to differentiate it from other overcoats, if only I had the keenness to discover it. The garment was of cheap material, and even the maker’s name had disappeared from it. There was nothing individual about it, and not even a handkerchief was to be found in its pockets. But when I was about to abandon search once more, a small inside pocket attracted my attention, and, diving within it, I brought out a square of paper, three or four inches wide. The detective instinct within me raised a shout of triumph, and I opened the paper with the conviction that it would bear some address that would lead me to the spy. The detective instinct became more humble to find that the paper bore only a few sprawling characters that were reminiscent of a Chinese laundry or a Canton tea-chest. Nevertheless, it was the only clue in my possession, and during the day I made several attempts to secure a translation of the marks. But nightfall came without success, and, reinforced by a good dinner, I turned my steps south of Market Street to keep my appointment with Clark. "Here’s the place," said the policeman, pointing across Natoma Street to the corner building, from which lights flashed and sounds of laughter and drunken song floated out on the night air. "We call it the House of Blazes." Even in the semi-darkness left by the street-lamps and the lights that streamed from the windows, I could see that it was a rambling two-story frame building, with signs of premature age upon it. The neighborhood was far from select, but the House of Blazes had characteristics of evil all its own. Above, the small windows scowled dark, stealthy, mistrustful, as though they sought to escape the eye of the officer of the law who stood by my side. Below, the broader windows, ablaze with lamps, and the swinging half-doors, through which we could see the feet of men and the occasional hat of a taller customer, made a show of openness. But it all seemed the bravado of the criminal who ventures forth by daylight, aggressively assertive of his self-confidence and ready to take to his heels at the first sign that he is recognized by the police. Across the windows and on a swinging sign were painted letters proclaiming that wines and liquors were to be had within and that H. Blasius was the owner. "It doesn’t look to be just the place for a stranger to show his money in," I said lightly. "It’s about as tough as they make ’em," growled the policeman. "There’s a sight more throuble in that darty den than in all the others on the beat."