I promised her, and, slipping on some clothes, I went out into the second-story hall. I carried no light. Before I had reached the bottom of the back stairs I heard David, my man, coming down. To be sure it was he and not a burglar I spoke to him in a low voice, my pistol raised in case of an unsatisfactory reply. "I heard that noise, sir," he whispered, "and was going down to see about it." "Are you ready if it's thieves?" I whispered. "I have got the biscuit-beater," he replied. "Come on, then," said I, and we went downstairs. I had left no light in the library, but there was one there now, and it shone through the open door into the hallway. We stopped and listened. There was no sound, and then slowly and cautiously we approached the door of the library. The scene I beheld astounded me, and involuntarily I sprang back a step or two. So did David; but in an instant we saw that there was no need of retreat or defence. Stretched upon the floor, not far from the doorway, lay a tall man, his face upturned to the light of a bull's-eye lantern which stood by the mantel-piece. His eyes were shut, and it was evident that he was perfectly insensible. Near by, in the wreck of the small table, glasses, and decanters, lay another man, apparently of heavier build. He also was as still as a corpse. A little further back, half sitting on the floor, with the upper part of his body resting against the lounge, was another man with a black mask over his face. "Are they dead?" exclaimed David, in an undertone of horror. "No," said I, "they are not dead; they have been caught in my trap." And I must admit that the consciousness of this created a proud exultation of spirit within me. I had overmatched these rascals; they were prostrated before me. If one of them moved, David and I could kill him. But I did not believe there would be any killing, nor any moving for the present. In a high whisper, which could have been heard distinctly all over the house, my wife now called to me from the top of the stairs. "What is it?" she said. "What has happened?" I stepped quickly to the stairway. "Everything is all right," I said in a loud, distinct voice, intended to assure my wife that there was no necessity for caution or alarm. "I will be with you presently." "I am glad to hear that nothing is the matter," said Aunt Martha, now for the first time opening her door. "I was afraid something had happened." But I had business to attend to before I could go upstairs. In thinking over and arranging this plan for the capture of burglars, I had carefully considered its various processes, and had provided against all the contingencies I could think of; therefore I was not now obliged to deliberate what I should do. "Keep your eye on them," said I to David, "and if one of them moves be ready for him. The first thing to do is to tie them hand and foot."