“You must know that last night was the very first night that I have ever slept without a nurse in the room. I was so much better that I thought I could dispense with one. I had a night-light burning, however. Well, about two in the morning I had sunk into a light sleep when I was suddenly aroused by a slight noise. It was like the sound which a mouse makes when it is gnawing a plank, and I lay listening to it for some time under the impression that it must come from that cause. Then it grew louder, and suddenly there came from the window a sharp metallic snick. I sat up in amazement. There could be no doubt what the sounds were now. The first ones had been caused by someone forcing an instrument through the slit between the sashes, and the second by the catch being pressed back.