I entered, and encountering no one, groped my way along the passage until it ended at a closed door, with a staircase immediately on the right. In my groping I chanced to put my fingers upon the handle. Turning it, I pushed open the door, and found myself in what seemed like a disused kitchen. There was a dresser along one side, and a copper for boiling clothes stood in a corner. The only light came from a small window opening upon a yard, and as the room was practically empty and unfurnished, I tiptoed out, and, closing the door silently, made my way up the staircase to the first landing. Here were two doors, under each of which a chink of feeble light was to be seen. I knocked at the nearest door, and receiving no answer, turned the handle. It was locked, but a scuffling noise within, and the prompt extinguishing of the light, told me that the room was not untenanted. Knocking at the second door, a gruff voice commended me so whole-heartedly and enthusiastically to the care and protection of one who, in polite circles, goes generally unmentioned, that, not desiring the further acquaintance of the party or parties on the other side of the door, I continued my way upstairs. On the second landing was a window, immediately below which was the small walled-in yard that I had seen from the kitchen, and beyond this a patch of waste land. Just then the moon, which, like a cruiser with "lights down," had been gliding silently and unseen across the dark sea of the sky, came out for a moment from behind the clouds to sweep her searchlight over this enclosed patch of ground, as over alien waters; and, in the white surprise of the searchlight, I saw that dead cats, cabbage stalks, and offal of all sorts were rotting and festering on the unsavoury spot, and that beyond, on the other side of a dilapidated fence, was the river. "From the point of view of a criminal," I said to myself, "this staircase offers unique advantages. For the committal of a crime, here, surely, is a vantage ground which is ideal and ready-made to hand. A stranger, ascending the staircase, as I am, in the dark, could be knocked on the head with impunity, and nobody be the wiser. Under cover of night, the body could be dropped out of the window, conveyed across that fever-breeding piece of waste land, and hoisted over yonder fence into the river. In an hour a corpse would be borne miles away from the scene of the crime, leaving never so much as a trace behind to tell how, and by whose hand, it came there." The thought was not reassuring; and when, the next instant, I arrived at the topmost landing, and, on opening a door and entering the den, saw two evil-looking rascals hurry out to cut off my retreat by the staircase, while two others got between me and the door, as already described, I began to realise that the hospitality which seemed likely to be pressed upon me would not be of the nature of an invitation to stay to tea.