"Yes, rather," responded my friend. "But at present it is useless to advance all kinds of wild theories. We must stick closely to facts if we would succeed. We have to-night made certain discoveries, startling enough in all conscience, and among them have elucidated the secret which Lady Glaslyn has hidden from every one. Now we must seek to discover the motive which caused her to apply that seal to the door, as well as ascertaining the reason her daughter has that mysterious drug among her possessions, together with the photographs of the two unknown victims." "I wonder how long it is since the man died in that room," I said. "What a horrible existence he must have led shut up there, gaining all his light and air through a broken pane of glass. He was studious, at any rate, judging from the character of the books with which he had been supplied." "And a linguist too," Boyd remarked, remembering that the books were in other languages besides English. "Strange that the curiosity of the servants was not aroused," I said. "They would be certain to wonder what was in a room sealed up as that is." "To satisfy them would be easy enough," the detective answered. "Her ladyship undoubtedly told them that certain family heirlooms, old furniture, or something, was stowed away there, and that the seal had been placed upon them by the trustees, or somebody. Trust a woman for an excuse," and he smiled grimly. We walked on together for some time in complete silence. The young day grew wider and brighter and redder in the sky. We had passed through Twickenham, and now, in the dawn, were making our way towards Richmond, whence we could catch the early workmen's train to Waterloo. "You must keep your friend Cleugh in entire ignorance of all this. Tell him you've been out to visit some friends, say at Ealing or Uxbridge, or somewhere, and that they compelled you to stay the night. If he were to know, the whole result of our investigations might be rendered abortive." "Of course I'll do as you wish," I answered. "But I can't for the life of me see why you entertain any suspicion of Dick. He's been all along eager and ready to assist me to clear up the mystery. To publish the details of the curious affair seems his one object." Boyd smiled again with veiled sarcasm. "And a very interesting story he'll have for publication, it appears to me," he said, laughing. Then he added after a second's pause, "One of the oddest facts in the whole affair is that the pair we found dead in Phillimore Place have never been missed by their friends." "Or the dead man at The Hollies, for the matter of that," I added. "Yes," he said in dubious tone. "There are yet some facts which we must learn ere we can piece the queer puzzle together and read the whole. Only then can we discover who was the man whom Lady Glaslyn has so carefully hidden. It's a devilish funny business, to say the least."