“I knew that for the adventure I was now contemplating considerable courage was required. But I did not hesitate. The time had come for me to show my mettle. In the few communications I was enabled to hold with my superiors I told them of my progress and arranged with them my plan of work. As we all agreed that I was about to encounter no common villainy, these plans naturally partook of finesse, as you will see if you will follow my narrative to the end.

“Early in the evening of a cool November night I sallied forth into the streets, dressed in the habiliments and wearing the guise of the wealthy old gentleman whose secret guest I had been for the last few days. As he was old and portly, and I young and spare, this disguise had cost me no little thought and labor. But assisted as I was by the darkness, I had but little fear of betraying myself to any chance spy who might be upon the watch, especially as Mr. L—— had a peculiar walk, which, in my short stay with him, I had learned to imitate perfectly. In the lapel of my overcoat I had tied a tag of blue ribbon, and, though for all I knew this was a signal devoting me to a secret and mysterious death, I walked along in a buoyant condition of mind, attributable, no doubt, to the excitement of the venture and to my desire to test my powers, even at the risk of my life.

“It was nine o’clock when I reached South Street. It was no new region to me, nor was I ignorant of the specified drinking den on the dock to which I had been directed. I remembered it as a bright spot in a mass of ship-prows and bow-rigging, and was possessed, besides, of a vague consciousness that there was something odd in connection with it which had aroused my curiosity sufficiently in the past for me to have once formed the resolution of seeing it again under circumstances which would allow me to give, it some attention. But I never thought that the circumstances would involve my own life, impossible as it is for a detective to reckon upon the future or to foresee the events into which he will be hurried by the next crime which may be reported at police headquarters.

“There were but few persons in the street when I crossed to The Heart’s Delight,—so named from the heart-shaped opening in the framework of the door, through which shone a light, inviting enough to one chilled by the keen November air and oppressed by the desolate appearance of the almost deserted street. But amongst those persons I thought I recognized more than one familiar form, and felt reassured as to the watch which had been set upon the house. The night was dark and the river especially so, but in the gloomy space beyond the dock I detected a shadow blacker than the rest, which I took for the police-boat they had promised to have in readiness in case I needed rescue from the water-side. Otherwise the surroundings were as usual, and saving the gruff singing of some drunken sailor coming from a narrow side street near by, no sound disturbed the somewhat lugubrious silence of this weird and forsaken spot.

“Pausing an instant before entering, I glanced up at the building, which was about three stories high, and endeavored to see what there was about it which had once arrested my attention, and came to the conclusion that it was its exceptional situation on the dock, and the ghostly effect of the hoisting-beam projecting from the upper story like a gibbet. And yet this beam was common to many a warehouse in the vicinity, though in none of them were there any such signs of life as proceeded from the curious mixture of sail loft, boat shop and drinking saloon, now before me. Could it be that the ban of criminality was upon the house, and that I had been conscious of this without being able to realize the cause of my interest?

“Not stopping to solve my sensations further, I tried the door, and, finding it yield easily to my touch, turned the knob and entered. For a moment I was blinded by the smoky glare of the heated atmosphere into which I stepped, but presently I was able to distinguish the vague outlines of an oyster bar in the distance, and the motionless figures of some half dozen men, whose movements had been arrested by my sudden entrance. For an instant this picture remained; then the drinking and card-playing were resumed, and I stood, as it were, alone on the sanded floor near the door. Improving the opportunity for a closer inspection of the place, I was struck by its picturesqueness. It had evidently been once used as a ship chandlery, and on the walls, which were but partly plastered, there still hung old bits of marlin, rusty rings and such other evidences of former traffic as did not interfere with the present more lucrative business.

“Below were the two bars, one at the right of the door, and the other at the lower end of the room near a window, through whose small, square panes I caught a glimpse of the colored lights of a couple of ferry boats, passing each other in midstream.

“At a table near me sat two men, grumbling at each other over a game of cards. They were large and powerful figures in the contracted space of this long and narrow room, and my heart gave a bound of joy as I recognized on them certain marks by which I was to know friend from foe in this possible den of thieves and murderers.

“Two sailors at the bar were bona fide habitués of the place, and so I judged to be the one or two other specimens of water-side character whose backs I could faintly discern in one of the dim corners. Meantime a man was approaching me.

“Let me see if I can describe him. He was about thirty, and had the complexion and figure of a consumptive, but his eye shone with the yellow glare of a beast of prey, and in the cadaverous hollows of his ashen cheeks and amid the lines about his thin drawn lips there lay for all his conciliatory smile, an expression so cold and yet so ferocious that I spotted him at once as the man to whose genius we were indebted for the new scheme of murder which I was jeopardizing my life to understand. But I allowed none of the repugnance with which he inspired me to appear in my manner, and, greeting him with half a nod, waited for him to speak. His voice had that smooth quality which betrays the hypocrite.