A mad screaming, bestial and ghastly, was echoing through the great hall. On the steps writhed four black-robed figures, twisting in convulsions, froth dripping from their livid mouths. Then with one frenzied crescendo of inhuman ululation they stiffened and lay still, and Conan knew that they were dead. He stared down at the altar and the crystal shards. Four headless golden serpents still coiled about the altar, but no alien life now animated the dully gleaming metal. Kerim Shah was rising slowly from his knees, whither he had been dashed by some unseen force. He shook his head to clear the ringing from his ears. 'Did you hear that crash when you struck? It was as if a thousand crystal panels shattered all over the castle as that globe burst. Were the souls of the wizards imprisoned in those golden balls?--Ha!' Conan wheeled as Kerim Shah drew his sword and pointed. Another figure stood at the head of the stair. His robe, too, was black, but of richly embroidered velvet, and there was a velvet cap on his head. His face was calm, and not unhandsome. 'Who the devil are you?' demanded Conan, staring up at him, knife in hand. 'I am the Master of Yimsha!' His voice was like the chime of a temple bell, but a note of cruel mirth ran through it. 'Where is Yasmina?' demanded Kerim Shah. The Master laughed down at him. 'What is that to you, dead man? Have you so quickly forgotten my strength, once lent to you, that you come armed against me, you poor fool? I think I will take your heart, Kerim Shah!' He held out his hand as if to receive something, and the Turanian cried out sharply like a man in mortal agony. He reeled drunkenly, and then, with a splintering of bones, a rending of flesh and muscle and a snapping of mail-links, his breast burst outward with a shower of blood, and through the ghastly aperture something red and dripping shot through the air into the Master's outstretched hand, as a bit of steel leaps to the magnet. The Turanian slumped to the floor and lay motionless, and the Master laughed and hurled the object to fall before Conan's feet--a still-quivering human heart. With a roar and a curse Conan charged the stair. From Khemsa's girdle he felt strength and deathless hate flow into him to combat the terrible emanation of power that met him on the steps. The air filled with a shimmering steely haze through which he plunged like a swimmer, head lowered, left arm bent about his face, knife gripped low in his right hand. His half-blinded eyes, glaring over the crook of his elbow, made out the hated shape of the Seer before and above him, the outline wavering as a reflection wavers in disturbed water. He was racked and torn by forces beyond his comprehension, but he felt a driving power outside and beyond his own lifting him inexorably upward and onward, despite the wizard's strength and his own agony.