It had evidently occurred to him by this time that if he tried to climb the ladder I could easily pull him down by the legs; and when he reached the cross hall, he turned quickly and dived through the opening into the hidden chambers. I lost no time in following, but the fellow put up a good race, and as I reached the old stairway he was mounting it two steps at a time, as I judged from the sound. I had hoped to catch and dispose of him without alarming the house, but it seemed inevitable now that the chase would end in such fashion as to arouse the company assembled in the library. I heard him stumble and fall headlong at the door above; then he shot off into the still darkened hall, and when I had gained the top I lost track of him for a moment. I paused and was about to strike a match, when he resumed his flight, and I was forced to grapple with the fact that some one else was pursuing him. I held my match unstruck upon this new disclosure, and stepped back within the concealed door and waited. Up and down the hall, two persons were running, and when they reached the ends of the corridor I heard hands touch the wall and the sound of dodging, and then almost instantly the two runners flashed by me again. The hall was so dark that I saw nothing, but as the runners passed the door I felt the rush of air caused by their flight. Three or four times this had happened, and then, still without having made a light, I thrust out my foot at the next return of the unseen runners. Some one tripped and fell headlong, and I promptly flung myself upon him. My prisoner's resistance engaged my best attention a moment, but when I had sat upon his legs and got hold of his struggling hands, some one stole softly by me. My prisoner, too, heard and was attentive. Not only did I experience the same sensation as on the previous night, of a passing near by, but I was conscious of the same faint perfume, as of a flower-scent half-caught in a garden at night, that had added to my mystification before. Then without the slightest warning the lights flashed on, and a door closed somewhere, but it was not the hidden one leading down into the remnant of the old house, for my prisoner's head and shoulders lay across its threshold. He sighed deeply, bringing my dazed wits back to him, and I found myself gazing into the blinking eyes of Lord Arrowood. "Bounders, I say, bounders!" he gasped. "In the circumstances, Lord Arrowood, I should not call names. Will you tell me what you mean by running through this house in this fashion? Stand up and give an account of yourself." I helped him to his feet and bent over the stair-rail leading down to the third floor. Evidently our strange transactions beneath and above had not disturbed the assembled suitors and their hostesses; but in common decency Lord Arrowood must be disposed of promptly; there was no doubt about that.