The man accepted my explanation after a moment's hesitation, and, standing aside from the doorway out of which he had issued, motioned me to enter. I did so and received a fresh surprise. Instead of finding myself in the home of one of the servants of the estate, which would have seemed the natural thing, I found myself in a most luxuriously furnished waiting-room, hung with mirrors and oak-framed paintings upon a dark panelled wall. My feet sank into a thick carpet, and I subsided, a little dazed, into a low, crimson velvet chair, and found beside me a table covered with magazines. The man followed me into the room, and, as he passed on his way to its upper end, he wheeled towards me a smaller table on which were decanters and glasses and a long box of cigarettes. Scarcely glancing at them, I watched him unlock a tall cupboard and half vanish inside it. He remained there for a space of almost five minutes. Then he stepped out, carefully locked it and advanced towards me. I fancied that there was a shade more respect in his manner and certainly some surprise. "Mr. Ravenor's servant will be here in a few minutes, sir, to show you the way to the Castle." I thought that I could have found it very well by myself, but, of course, I could not say so. I occupied myself by examining the contents of the room, and struggled for a few moments between a feeling of strong curiosity and a natural disinclination to ask questions of a servant, especially one whose manner seemed so little to invite them. Finally the former conquered. "How did you find that out without leaving this room?" I asked. He pointed to the cupboard. "We have a telephone there in connection with the Castle, sir," he explained. Then he busied himself arranging some papers on a table at the other end of the apartment, with the obvious air of not desiring to be questioned further. The explanation was so simple that I smiled. I began to realise the very insufficient causes which had given rise to the stories which were always floating about concerning the mystery in which the master of Ravenor Castle chose to dwell. What more natural than that a man of liberal education, with a passion for absolute solitude, should seek to insure it by some such means as these, by the application of very simple scientific devices, common enough in a city, but unheard of in our quiet country neighbourhood? I was kept waiting for about a quarter of an hour. Then the door was opened noiselessly from without and a tall, dark man, clean-shaven and dressed in black, relieved by an immaculate white tie, entered and looked at me. I rose to my feet and threw down the magazine which I had been pretending to read.