I did not succeed in solving it, however, and after some ten minutes had elapsed, I was settling myself again to sleep when I was re-aroused by a fresh sound from the quarter mentioned. The door I had so lately heard shut, opened again, and though I had to rush for it, I succeeded in getting to my window in time to catch a glimpse of the departing figure of the young man hurrying away towards Broadway. The young woman was not with him, and as I realized that he had left her behind him in the great, empty house, without apparent light and certainly without any companion, I began to question if this was like Franklin Van Burnam. Was it not more in keeping with the recklessness of his more easy-natured and less reliable brother, Howard, who, some two or three years back, had married a young wife of no very satisfactory antecedents, and who, as I had heard, had been ostracized by the family in consequence? Whichever of the two it was, he had certainly shown but little consideration for his companion, and thus thinking, I fell off to sleep just as the clock struck the half hour after midnight. Next morning as soon as modesty would permit me to approach the window, I surveyed the neighboring house minutely. Not a blind was open, nor a shutter displaced. As I am an early riser, this did not disturb me at the time, but when after breakfast I looked again and still failed to detect any evidences of life in the great barren front beside me, I began to feel uneasy. But I did nothing till noon, when going into my rear garden and observing that the back windows of the Van Burnam house were as closely shuttered as the front, I became so anxious that I stopped the next policeman I saw going by, and telling him my suspicions, urged him to ring the bell. No answer followed the summons. "There is no one here," said he. "Ring again!" I begged. And he rang again but with no better result. "Don't you see that the house is shut up?" he grumbled. "We have had orders to watch the place, but none to take the watch off." "There is a young woman inside," I insisted. "The more I think over last night's occurrence, the more I am convinced that the matter should be looked into." He shrugged his shoulders and was moving away when we both observed a common-looking woman standing in front looking at us. She had a bundle in her hand, and her face, unnaturally ruddy though it was, had a scared look which was all the more remarkable from the fact that it was one of those wooden-like countenances which under ordinary circumstances are capable of but little expression. She was not a stranger to me; that is, I had seen her before in or about the house in which we were at that moment so interested; and not stopping to put any curb on my excitement, I rushed down to the pavement and accosted her. "Who are you?" I asked. "Do you work for the Van Burnams, and do you know who the lady was who came here last night?"