"Ah!" he said chuckling, while the pink, hairless face was one mask of pleasure. "Ah, that is how I have been wanting to hear you talk for a long, long time. I thought we should break you down at last, though. For my part I should have told you long before, only William thought that you would not give yourself away about Miss Marjorie Poole if you knew that we saw it all. However, we know now, so it don't matter. Dear little girl she is, Mr. Rathbone. Sir William sees her every day. She thinks you have gone off with a barmaid and are living quite happily, helping her to manage a pub. in the East. Sir William sees her every day, and she sits on his knee, and they kiss each other and laugh about being in love. Charming, isn't it? Fancy you talking to me like that. Pity? Pity? Aren't I your best friend? Don't I bring you your food every day? And didn't I give you a drink just now? That's more than William did. And besides to-morrow aren't I going to begin the injections that in a month's time or so will make you appear a confirmed dipsomaniac, just before I come down here and hold your head in a bucket of water until you are drowned? Then, dress your body in nice, dirty clothes and have you dropped in the Thames just above Wapping. Oh, Mr. Rathbone, how could you say such cruel things to your good friend, Mr. Wilson Guest? Well, I must be going. I don't think you will want anything more to-night, will you? Good night. Sleep pleasantly. I am going to go to bed myself, and I shall lie awake thinking of the fun there will be at the inquest when the Doctor reports after the post-mortem that you were a confirmed drunkard, and all the world, including Miss Marjorie Poole, will know the real truth about Guy Rathbone's disappearance." CHAPTER XXI HOW THEY ALL WENT TO THE HOUSE IN REGENT'S PARK The little door in the wall of Sir William Gouldesbrough's old Georgian house stood wide open. Carriages were driving up, and the butler was constantly ushering visitors into the vast sombre hall, while a footman kept escorting this or that arrival up the gravel path among the laurel bushes. It was afternoon, a dull and livid afternoon. Clouds had come down too near to London, and thunder lurked behind them. Never at any time a cheerful place, the old walled house of the scientist to-day wore its most depressing aspect. The well-known people, who were invited to the demonstration of a stupendous and revolutionary discovery, looked with ill-concealed curiosity at the house, the garden, and the gloomy dignity of the hall.