My knowledge of the planning of houses aided me at each step I took. From the hallway I could place the kitchen, the laundry, and the back staircase. I knew the front hall lay beyond a door which was closed. At the foot of the back staircase I stood for some minutes and listened. Not a sound came from anywhere in the house. The kitchen clock ticked loudly, and presently startled me with a gurgle and a chuckle before it struck one. After this manifestation I had to wait till my heart stopped thumping and my nerves were quieted before venturing on the stairs. As the first step creaked, I kept close to the wall to get a firmer support for my tread. On reaching a landing I could see up into another hall. Here I perceived the glimmer or reflection of a light. It was a very dim or distant light—but it was a light. I stood on the landing and waited. If there were people moving about I should hear them soon. But all I did hear was the heavy breathing of the servants, who were sleeping on the topmost floor. Creeping a little farther up, I discovered that the light was in a bedroom—the first to open from the front hall up-stairs. Between the front hall and the back hall the door was ajar. That would make things easier for me, and I dragged myself noiselessly to the top. I was now at the head of the first flight of back stairs, and looking into the master’s section of the house. Except for that one dim light the house was dark. It was not, however, so dark that my architect’s eye couldn’t make a mental map quite sufficient for my guidance. It was clearly a dwelling that had been added to, with some rambling characteristics. The first few feet of the front hall were on a level with the back hall, after which came a flight of three or four steps to a higher plane, which ran the rest of the depth of the building to the window over the front door. In the faint radiance through this window I could discern a high-boy, a bureau, and some chairs against the wall. I could see, too, that from this higher level one staircase ran down to the front door and another up to a third story. What was chiefly of moment to me was the fact that the bedroom with the light was lower than the rest of this part of the house, and somewhat cut off from it. With movements as quiet as a cat’s I got myself where I could peep into the bedroom where the lamp burned. It proved to be a small electric lamp with a rose-colored shade, standing beside a bed. It was a rose-colored room, evidently that of a young lady. But there was no young lady there. There was no one. The fact that surprises me as I record all this is that I was so extraordinarily cool. I was cooler in the act than I am in the memory of it. I walked into that bedroom as calmly as if it had been my own.