A distinct sense of disappointment swept through me as I stooped down to examine this door and found that it had already been forced open. I knew, however, that I was following in the footsteps of my more experienced predecessor. Then came a storeroom, and then a laundry-room, with another jimmied door at the head of the stairway leading to the first floor. Here I stood waiting and listening for some time. But still again nothing but darkness and silence and that musty aroma peculiar to unoccupied houses surrounded me. I felt more at home by this time, and was more leisurely in my survey of the passage upward. I was, of course, confronted by nothing more disturbing than ghost-like furniture covered with ticking and crystal-hung chandeliers encased in cheesecloth. I began to admire my friend the burglar's astuteness in choosing so circuitous and yet so protected a path. There was almost genius in it. His advance, I felt sure, was toward the roof. As I had expected, I found the scuttle open. The lock, I could see, had been quite cleverly picked. And, so far, there had not been a mishap. Once out on the housetop, however, I foresaw that I would have to be more careful. As I clambered up to the higher coping-tiles that marked the line of the next roof, I knew that I had actually broken into the enemy's lines. Yet the way still seemed clear enough. For, as I came to the roof-scuttle of the second house I found that it, too, remained unlocked. My predecessor had made things almost disappointingly easy for me. Yet, in another way, he had left things doubly dangerous. I had to bear the brunt of any mis-step he may have made. I was being called to face the responsibility of both his intrusion and my own. So it was with infinite precaution that I lifted the scuttle and leaned over that little well of darkness, inhaling the warmer air that seeped up in my face. With it came an odor quite different to that of the house I had just left. There was something expository in it, something more vital and electric, eloquent of a place inhabited, of human beings and their lairs and trails, of movement and life and vaguely defined menaces. It was, I fancied, a good deal like that man-smell which comes down-wind to a stalked and wary elk. I stepped down on the iron ladder that led into the uncertain darkness, covering the trap after me. I began to feel, as I groped my way downward, that the whole thing was becoming more than a game. I was disturbed by the thought of how deep I had ventured into an uncertainty. I began to be oppressed by the thought of how complicated my path was proving. I felt intimidated by the undetermined intricacies that still awaited me. A new anxiety was taking possession of me, a sort of low fever of fear, an increasing impatience to replace my precious porcelain, end my mission, and make my escape to the open.