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 werewolf, as terrible as any in medieval legend. The thing that had been Adam Grimm rushed toward the girl, a curved skinning-knife gleaming in his hand, and I shook myself out of my daze of horror, and fired through the hole in the shutter. My aim was unerring; I saw the cape jerk to the impact of the slug, and at the crash of the shot the monster staggered and the knife fell from his hand. Then, instantly, he whirled and dashed back across the room toward Richard Brent. With lightning comprehension he realized what had happened, knew he could take only one victim with him, and made his choice instantly. [Illustration: "The thing that had been Adam Grimm rushed toward the girl, a skinning-knife in his hand."] I do not believe that I can logically be blamed for what happened. I might have smashed that shutter, leaped into the room and grappled with the thing that the monks of Inner Mongolia had made of Adam Grimm. But so swiftly did the monster move that Richard Brent would have died anyway before I could have burst into the room. I did what seemed the only obvious thing--I poured lead through the window into that loping horror as it crossed the room. That should have halted it, should have crashed it down dead on the floor. But Adam Grimm plunged on, heedless of the slugs ripping into him. His vitality was more than human, more than bestial; there was something demoniac about him, invoked by the black arts that made him what he was. No natural creature could have crossed that room under that raking hail of close-range lead. At that distance I could not miss. He reeled at each impact, but he did not fall until I had smashed home the sixth bullet. Then he crawled on, beast-like, on hands and knees, froth and blood dripping from his grinning jaws. Panic swept me. Frantically I snatched the second gun and emptied it into that body that writhed painfully onward, spattering blood at every movement. But all hell could not keep Adam Grimm from his prey, and death itself shrank from the ghastly determination in that once-human soul.