dull, without life or inflection. But there was something else—something I could not name.

I was nearest the door and scrambled out first. To my surprise it was not dark. We were enveloped by a radiance, rosy as the broad ray had been, but fainter, like the afterglow of a sunset. By this light I could make out, vaguely, our surroundings. We seemed to be on a plateau; a great flat space probably an acre in extent, surrounded by a six-foot wall. Behind us there was a wide gateway through which our airplane had just come and across which workmen were dropping bars made of some material like cement. Before us, dotting this acre or so of plateau, were small, domed structures made of the same cement-like material. In the center of the plateau rose a larger domed building with a segment of its roof open to the stars and through this opening I could see the shadowy suggestion of a great lamp. There was the source of that powerful magnetic ray!

Foulet and Brice scrambled out and stood beside me. They said never a word, but I knew that every sense was alert.

"If you will follow me," that same cold, expressionless voice murmured. I turned to look at the man. He was not bad looking, clean shaven, well tailored. He swung his eyes to meet my gaze and as he did so that same chill fled along my spine. His eyes—what was the matter with them? They were dark—brown or black—and as shiny as shoe buttons. But there was no gleam of expression in them. Their shine was the glitter of polished glass.

Without a word we followed him across the small cleared space where our airplane stood, past a row of the small, domed structures to a low door cut in the white wall of the great central building. At the doorway he turned.

"I am taking you to the Master," he said; then, over his shoulder he added. "There is no means of escape—we are two thousand feet above the earth!" And he laughed—a quick, short cackle of crazy laughter. I felt the breath catch in my throat and the short hairs prickle at my neck. Foulet gripped my arm. Through my coat I could feel the chill of his fingers, but his grasp steadied me.

We walked on, following our guide. Down a narrow passageway, through a low arched door into a small room, evidently an ante-chamber to a larger room beyond. Without a word our guide left us, passing through another door which he closed after him.

Brice and Foulet and I exchanged looks, but we were silent. It might be we were watched. It might be that the very walls had ears. We could trust nothing.

Our guide returned. "The Master," he said and flung open a wide door.

We found ourselves in a large room filled with paraphernalia of all sorts: wires, lights, laboratory tables cluttered with test tubes and apparatus—and in the midst of this ordered chaos stood a man, his gleaming eyes watching us fixedly.

At first I was conscious of nothing but his eyes. Large, coal black and shiny with that peculiar, expressionless gloss I had noted in the eyes of our guide. Later I realized that he was of slight build, meticulously neat, with a tiny black waxed mustache and a carefully trimmed Van Dyke beard.

"Welcome to my floating island," he said gravely, never swerving those shiny eyes for an instant. "We have hoped long for your coming." He paused, noiselessly rubbing his hands, and watching us. We stared back, fascinated by that glossy, fixed gaze. "There is much to tell you," he went on, "and to ask you." He permitted himself a slow smile that spread his lips but failed to reach his eyes. "During your stay here," he continued, "which I hope will be both long and profitable, you will become my slaves and will know me as Master. But before you come under my domination you may know my name."

For the first time he moved his eyes. His glance swept the room as if to assure himself we were alone. He stepped, as swiftly and softly as a cat, over to the door through which we had entered, opened it, spoke to our guide who was waiting in the ante-room, closed it and returned. He faced us, his lips smiling and his eyes as blank as polished agate.

"My name," he said softly, "is Algernon—Frederick—Fraser!" He paused and watched us. Behind me I felt Foulet start; I heard Brice's quickly suppressed gasp. My own throat closed on words that might have been fatal. Algernon Frederick Fraser! Was it possible? Could it be?

Five years before Fraser had suddenly burst on the world of science. He had made some amazing discoveries regarding the power of light; discoveries that would reorganize the living conditions of the world. For a week or two the papers were filled with the man's amazing genius; then no more was heard of him. Had he died? What was the story?

Two years passed and even the name of Fraser was forgotten. Then suddenly it burst forth again in the headlines of the world. Fraser had disappeared! Fraser had vanished! But not as a brilliant genius of science; he had gone as an escaped lunatic! After his amazing burst of fame his mind snapped. Somehow the story had been kept out of the press.

Fraser was incarcerated in a quiet, very private asylum, and that was all. All—until he escaped. When that happened the story couldn't be hushed any longer. The press was informed, the people were warned. He became known as the Mad Menace. The police and secret service organizations of the world searched for him. His name became a byword. Where had he gone? What would he do? What was his scheme? For he was still the astounding scientific genius. That portion of his mind was untouched. At the time of his escape the physicians in charge of the case assured the press that Fraser's scientific mind was every bit as sound as ever.

And that was all. Aside from his god Science he was a maniac—inhuman, cruel, unreasoning. What would such a man do loosed in the world? What might he not do? Was it possible that it was this man who stood before us now with his eyes fastened upon us so intently and his lips spread in that little, empty smile? Suddenly I knew! Those eyes! Those eyes were the shiny, vacuous, soulless eyes of a madman!

"I see," he said softly, "that you have heard of me. But it is three years since your world has seen me—yes?" He laughed—a low laugh that seemed to freeze the air around him. "They call me mad." His smile faded, his eyes bored through us like steel needles. "I am not mad! No madman could do what I have done in three years!" For the first time an expression flickered in his eyes—a crafty gleam of vanity that flared instantaneously. "Would you like to see?" He leaned toward us. We bowed, but it was Brice who spoke.

"Very much, Doctor Fraser—"

"Don't call me that!" The man whirled like a tiger ready to spring. "Don't call me that! I am Master here! Call me Master! Say it." His voice rose to a shriek. "Say it—Master!"

I clamped my teeth against the bloodless horror of that maniacal voice. It chilled my veins. Again I felt the hair rise on my scalp. Brice bowed quietly; and his eyes, serene and blue, met Fraser's fairly.

"Of course, Master." His low English voice soothed the bristling silence. "I am sure I speak for Monsieur Foulet and Lieutenant Ainslee when I say that we would be most deeply interested in your achievements."

Fraser was placated. He relaxed. He softly rubbed his hands while a smug, crafty smile flitted across his lips. "You will follow me," he murmured.

He led the way back through the ante-room and down the passageway till we stood again under the stars, and again I was struck by the strange light, warm and faint and rosy like a sunset afterglow. As if he read my thought Fraser turned to me.

"I will show you first the source of this rosy light; that, I believe, will explain a great deal." He led the way down one of the narrow pathways between the low, domed houses—if they could be called houses, for they were