"Wait here for me," I said to the driver. "I may come within half an hour, I may be much longer; but, at all events, wait. Here is a sovereign for you, and you shall have as much again when I return." The tone of his voice told me that he was suspicious, as well as curious, regarding the mysterious intentions of his fare; but I was sure that he would not fail me. Two pounds were not to be so easily picked up every evening. I walked on rapidly. As I approached the House by the Lock I lost sight of the yellow gleam which for some time had guided me, but the moon glinted bleakly on the staring panes of dark, upper windows. Desolate as the place had appeared at the hour of sunset, it had had an air of hospitable welcome at that time compared to that which it wore now. Never, it seemed to me, had I seen a habitation so grim, so silently suggestive of haunting, evil things. The face of the moon, as it rose, lost the ruddy hue which had coloured it nearer the horizon, and its paling disc was swept by black and ragged storm clouds. The wind moaned through the trees like the wail of a lost soul, and there was a stealthy, monotonous lapping of the dark waters so close at hand. Other sound there was none, and, though I had seen the small ray from a distance, now--so far as I could ascertain--not a window in the whole gloomy pile was lighted. I went up the path, knocked, and rang the bell, which sent back jangling echoes, such as belong in one's fancy to an uninhabited house. From a distant kennel a dog began to bay. Otherwise I was not answered, and as I rang and thundered on the knocker again, the animal's voice at length subsided into a protesting whine. I ought by this time to have been sure that Wildred and Karine were not in the house, but, on the contrary, I was by no means certain of that fact. Mentally I argued that, if the master was absent, a caretaker or servant would certainly have been left, and unless a stone-deaf person had been selected for the post my violent alarms would have brought him to me. If any reason existed, however, why the door should not be opened, it would be easy to understand how and why the caretaker might be suddenly afflicted with an inability to hear. Instead of being plunged into discouragement, an ever-kindling fire of rage mounted within me. Rather than go away ignorant as to whether Karine was hidden in this hateful house or not, I would force an entrance. I sprang down the steps and went to one of the bow windows nearest the door. Not an instant's hesitation had I in kicking in one of the panes of glass, but, as it happened, I had only my trouble for my pains. There were solidly-barred shutters inside, so heavy that even I, strong man as I was, could not break them open.