By the time he reached the castle, the night was dark indeed. He approached it by the path along the burn, and felt his way cautiously up the steep zigzags of the hill, and past the servants' quarters, where a dog barked and gave him an uneasy minute till he found that it was tied up, and that the noise which issued from a brilliantly lighted window--which he guessed to be the servants' hall--did not cease or diminish on account of it.
There were no other lights to be seen, and he edged his way round to the front of the house, which loomed very black and mysterious against the liquid darkness of the moonless sky. A little wind had risen, and the sound of a million leaves rustling gently on the trees of the woods around was added to the distant murmur of the burn, so that the night seemed full of noises, and every bush alive and watching.
Keeping on the grass, and with every precaution of silence, Gimblet crept along till he thought he was outside the drawing-room.
It did not take him long to find the window he had left unlatched that afternoon, but it was an anxious moment till he made sure that no one had noticed it and that it was yet unfastened. If a careful housemaid had discovered it and shut it, he would have to begin housebreaking in earnest. Luckily it opened easily at his touch, and he lost no time in climbing in, though it was rather a tight squeeze through the narrow imitation Gothic mullions, and he was thankful there were no bars as in the library.
He had more than once during his career found himself obliged to enter other people's houses in this unceremonious, not to say burglarious fashion. But it was always an exciting experience; and his heart beat a trifle faster than usual as he stood motionless by the window, straining his ears for the sound of any movement on the part of the household. Nothing stirred, however, and by the help of an occasional gleam from his pocket electric torch Gimblet made his way to the door, and through the deserted house to the distant passage leading to the old tower. Once inside the library he breathed more freely, and when, after holding his breath for some minutes, he had made certain that the absolute silence of the place continued unbroken by any suspicion of noise, he felt safer still. His first act was to draw the curtains, and to fasten them together in the middle with a large safety-pin he had brought for the purpose. Then, secure from observation, he switched on his torch, placed it on the table with its back to the window, and set about what he had come to do.