At length, feeling a fatigue which had nothing of drowsiness in it, I bolted the newly outfitted hall door, turned off the light, and threw myself down on the hard, uneven bed—coat, collar, shoes, and all. In the darkness every faint noise of the night seemed magnified, and a flood of doubly unpleasant thoughts swept over me. I was sorry I had put out the light, yet was too tired to rise and turn it on again. Then, after a long, dreary interval, and prefaced by a fresh creaking of stairs and corridor, there came that soft, damnably unmistakable sound which seemed like a malign fulfillment of all my apprehensions. Without the least shadow of a doubt, the lock of my door was being tried—cautiously, furtively, tentatively—with a key.