And he went along the passage, murmuring "Hm" over and over to himself, for there seemed nothing more adequate that he could think of. The servants had long since gone to bed; he alone was awake in the whole big house. He moved cautiously down the long corridor towards the green baize doors, fully aware that it was not the proper way upstairs. He pushed them, and they swung behind him with a grunt that repeated itself several times, lessening and shortening until it ended in an abrupt puffing sound--and he found himself in a chilly corridor of stone. It was very dark; the candle threw the shadow of his hand down the gaping length in front of him. He went stealthily a few steps further, then stopped opposite a closed door of white. For a moment he held his breath, examining the panels by the light of the raised candle; then turned the knob of brass, threw it wide open, and found himself--in Mrs. Horton's kitchen. The room was very warm. There was the curious, familiar smell of brooms and aprons, of soap and soda, flavoured with brown sugar, treacle, and a dash of toast and roasted coffee. The ashes still glowed between the bars of the range like a grinning mouth. He put the candle down and looked about him nervously. There was an awful moment when he thought a great six-foot cook, with red visage and bare arms, would rise and strike him with a ladle or a rolling-pin. In the faint light he made out the white deal table in the centre, the rows of pots and pans gleaming in mid-air, dish-cloths hanging on a string to dry, layers of plates of various sizes on the shelves, and jugs suspended by their handles at an angle ready for pouring out. He saw the dresser with its huge, capacious drawers--the only drawers in the world that opened easily, and were deep enough to be of value. Also--there was a sound, the sound all kitchens have, steadily tapping, clicking, ticking. He turned; he saw the familiar object whence the sound proceeded. At the end of the great silent room, upright like a sentry placed against the wall, stiff and rigid, he saw a figure with a round and pallid face, staring solemnly at him through the gloom. He stiffened and stood rigid too, listening to the tapping noise that issued from its hollow interior of wood and iron. Watching him with remorseless mien, the kitchen clock asked him for the password. "Why not? Why not?" its ticking said distinctly.