"When I got here, and had finished my business, I thought you chaps would be interested; and also I wanted to get it all spread out clear in my mind; so I rung you up. I am going over again to-morrow, and when I get back, I ought to have something pretty extraordinary to tell you. By the way, there is a curious thing I forgot to tell you. I tried to get a phonographic record of the whistling; but it simply produced no impression on the wax at all. That is one of the things that has made me feel queer, I can tell you. Another extraordinary thing is that the microphone will not magnify the sound--will not even transmit it; seems to take no account of it, and acts as if it were nonexistent. I am absolutely and utterly stumped, up to the present. I am a wee bit curious to see whether any of your dear clever heads can make daylight of it. _I_ cannot--not yet." He rose to his feet. "Good night, all," he said, and began to usher us out abruptly, but without offence, into the night. A fortnight later, he dropped each of us a card, and you can imagine that I was not late this time. When we arrived, Carnacki took us straight into dinner, and when we had finished, and all made ourselves comfortable, he began again, where he had left off:-- "Now just listen quietly; for I have got something pretty queer to tell you. I got back late at night, and I had to walk up to the castle, as I had not warned them that I was coming. It was bright moonlight; so that the walk was rather a pleasure, than otherwise. When I got there, the whole place was in darkness, and I thought I would take a walk 'round outside, to see whether Tassoc or his brother was keeping watch. But I could not find them anywhere, and concluded that they had got tired of it, and gone off to bed. "As I returned across the front of the East Wing, I caught the hooning whistling of the Room, coming down strangely through the stillness of the night. It had a queer note in it, I remember--low and constant, queerly meditative. I looked up at the window, bright in the moonlight, and got a sudden thought to bring a ladder from the stable yard, and try to get a look into the Room, through the window. "With this notion, I hunted 'round at the back of the castle, among the straggle of offices, and presently found a long, fairly light ladder; though it was heavy enough for one, goodness knows! And I thought at first that I should never get it reared. I managed at last, and let the ends rest very quietly against the wall, a little below the sill of the larger window. Then, going silently, I went up the ladder. Presently, I had my face above the sill and was looking in alone with the moonlight.