He was scarcely gone when I observed another and a much younger man approaching hastily from the opposite side of the square. Considering the season of the year and the genial mildness of the night, he was somewhat closely muffled up; and as he came, for all his hurry, he kept looking nervously behind him. Arrived before my door, he halted and set one foot upon the step, as though about to enter; then, with a sudden change, he turned and began to hurry away; halted a second time, as if in painful indecision; and lastly, with a violent gesture, wheeled about, returned straight to the door, and rapped upon the knocker. He was almost immediately admitted by the first arrival. My curiosity was now broad awake. I made myself as small as I could in the very densest of the shadow, and waited for the sequel. Nor had I long to wait. From the same side of the square a second young man made his appearance, walking slowly and softly, and like the first, muffled to the nose. Before the house he paused, looked all about him with a swift and comprehensive glance; and seeing the square lie empty in the moon and lamplight, leaned far across the area railings and appeared to listen to what was passing in the house. From the dining-room there came the report of a champagne cork, and following upon that, the sound of rich and manly laughter. The listener took heart of grace, produced a key, unlocked the area gate, shut it noiselessly behind him, and descended the stair. Just when his head had reached the level of the pavement, he turned half round and once more raked the square with a suspicious eyeshot. The mufflings had fallen lower round his neck; the moon shone full upon him; and I was startled to observe the pallor and passionate agitation of his face. I could remain no longer passive. Persuaded that something deadly was afoot, I crossed the roadway and drew near the area railings. There was no one below; the man must therefore have entered the house, with what purpose I dreaded to imagine. I have at no part of my career lacked courage; and now, finding the area gate was merely laid to, I pushed it gently open and descended the stairs. The kitchen door of the house, like the area gate, was closed but not fastened. It flashed upon me that the criminal was thus preparing his escape; and the thought, as it confirmed the worst of my suspicions, lent me new resolve. I entered the house; and being now quite reckless of my life, I shut and locked the door.