with. That bomb I threw through the window would have had little effect upon him. It contained one of the chemical secrets I managed to learn in Mongolia, but it is effective only in relation to the bodily strength of the victim. It was enough to knock out a girl and a soft, pampered degenerate like you. But Ashley was able to stagger out of the cabin and would quickly have regained his full powers, if I had not come upon him and put him beyond power of harm."

Brent lifted a moaning cry. There was no intelligence in his eyes, only a ghastly fear. Foam flew from his lips. He was mad—mad as the fearful being that posed and yammered in that room of horror. Only the girl, writhing pitifully on that ebony table, was sane. All else was madness and nightmare. And suddenly complete delirium overcame Adam Grimm, and the laboring monotones shattered in a heart-stopping scream.

"First the girl!" shrieked Adam Grimm—or the thing that had been Adam Grimm. "The girl—to be slain as I have seen women slain in Mongolia—to be skinned alive, slowly—oh, so slowly! She shall bleed to make you suffer, Richard Brent—suffer as I suffered in black Yahlgan! She shall not die until there is no longer an inch of skin left on her body below her neck! Watch me flay your beloved niece, Richard Brent!"

I do not believe Richard Brent comprehended. He was beyond understanding anything. He yammered gibberish, tossing his head from side to side, spattering foam from his livid, working lips. I was lifting a revolver, but just then Adam Grimm whirled, and the sight of his face froze me into paralysis. What unguessed masters of nameless science dwell in the black towers of Yahlgan I dare not dream, but surely black sorcery from the pits of hell went into the remolding of that countenance.

Ears, forehead and eyes were those of an ordinary man; but the nose, mouth and jaws were such as men have not even imagined in nightmares. I find myself unable to find adequate descriptive phrases. They were hideously elongated, like the muzzle of an animal. There was no chin; upper and lower jaws jutted like the jaws of a hound or a wolf, and the teeth, bared by the snarling bestial lips, were gleaming fangs. How those jaws managed to frame human words I cannot guess.

But the change was deeper than superficial appearance. In his eyes, which blazed like coals of hell's fire, was a glare that never shone from any human's eyes, sane or mad. When the black devil-monks of Yahlgan altered Adam Grimm's face, they wrought a corresponding change in his soul. He was no longer a human being; he was a veritable 

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