He staggered up, yammering as if the sight had almost unseated his reason. She was amazed to realize that she understood him. He was gibbering in the Stygian tongue, though in a dialect unfamiliar to her.

"Who are you? Whence come you? What do you in Xuchotl?" Then rushing on, without waiting for her to reply: "But you are a friend--G.o.ddess or devil, it makes no difference! You have slain the Burning Skull! It was but a man beneath it, after all! We deemed it a demon _they_ conjured up out of the catacombs! _Listen!_"

He stopped short in his ravings and stiffened, straining his ears with painful intensity. The girl heard nothing.

"We must hasten!" he whispered. "_They_ are west of the Great Hall! They may be all around us here! They may be creeping upon us even now!"

He seized her wrist in a convulsive grasp she found hard to break.

"Whom do you mean by 'they'?" she demanded.

He stared at her uncomprehendingly for an instant, as if he found her ignorance hard to understand.

"They?" he stammered vaguely. "Why--why, the people of Xotalanc! The clan of the man you slew. They who dwell by the eastern gate."

"You mean to say this city is inhabited?" she exclaimed.

"Aye! Aye!" He was writhing in the impatience of apprehension. "Come away! Come quick! We must return to Tecuhltli!"

"Where is that?" she demanded.

"The quarter by the western gate!" He had her wrist again and was pulling her toward the door through which he had first come. Great beads of perspiration dripped from his dark forehead, and his eyes blazed with terror.

"Wait a minute!" she growled, flinging off his hand. "Keep your hands off me, or I'll split your skull. What's all this about? Who are you?

Where would you take me?"

He took a firm grip on himself, casting glances to all sides, and began speaking so fast his words tripped over each other.

"My name is Techotl. I am of Tecuhltli. I and this man who lies with his throat cut came into the Halls of Science to try and ambush some of the Xotalancas. But we became separated and I returned here to find him with his gullet slit. The Burning Skull did it, I know, just as he would have slain me had you not killed him. But perhaps he was not alone. Others may be stealing from Xotalanc! The G.o.ds themselves blench at the fate of those they take alive!"

At the thought he shook as with an ague and his dark skin grew ashy.

Valeria frowned puzzledly at him. She sensed intelligence behind this rigmarole, but it was meaningless to her.

She turned toward the skull, which still glowed and pulsed on the floor, and was reaching a booted toe tentatively toward it, when the man who called himself Techotl sprang forward with a cry.

"Do not touch it! Do not even look at it! Madness and death lurk in it.

The wizards of Xotalanc understand its secret--they found it in the catacombs, where lie the bones of terrible kings who ruled in Xuchotl in the black centuries of the past. To gaze upon it freezes the blood and withers the brain of a man who understands not its mystery. To touch it causes madness and destruction."

She scowled at him uncertainly. He was not a rea.s.suring figure, with his lean, muscle-knotted frame, and snaky locks. In his eyes, behind the glow of terror, lurked a weird light she had never seen in the eyes of a man wholly sane. Yet he seemed sincere in his protestations.

"Come!" he begged, reaching for her hand, and then recoiling as he remembered her warning, "You are a stranger. How you came here I do not know, but if you were a G.o.ddess or a demon, come to aid Tecuhltli, you would know all the things you have asked me. You must be from beyond the great forest, whence our ancestors came. But you are our friend, or you would not have slain my enemy. Come quickly, before the Xotalancas find us and slay us!"

From his repellent, impa.s.sioned face she glanced to the sinister skull, smoldering and glowing on the floor near the dead man. It was like a skull seen in a dream, undeniably human, yet with disturbing distortions and malformations of contour and outline. In life the wearer of that skull must have presented an alien and monstrous aspect. Life? It seemed to possess some sort of life of its own. Its jaws yawned at her and snapped together. Its radiance grew brighter, more vivid, yet the impression of nightmare grew too; it was a dream; all life was a dream--it was Techotl's urgent voice which snapped Valeria back from the dim gulfs whither she was drifting.

"Do not look at the skull! Do not look at the skull!" It was a far cry from across unreckoned voids.

Valeria shook herself like a lion shaking his mane. Her vision cleared.

Techotl was chattering: "In life it housed the awful brain of a king of magicians! It holds still the life and fire of magic drawn from outer s.p.a.ces!"

With a curse Valeria leaped, lithe as a panther, and the skull crashed to flaming bits under her swinging sword. Somewhere in the room, or in the void, or in the dim reaches of her consciousness, an inhuman voice cried out in pain and rage.

Techotl's hand was plucking at her arm and he was gibbering: "You have broken it! You have destroyed it! Not all the black arts of Xotalanc can rebuild it! Come away! Come away quickly, now!"

"But I can't go," she protested. "I have a friend somewhere near by----"

The flare of his eyes cut her short as he stared past her with an expression grown ghastly. She wheeled just as four men rushed through as many doors, converging on the pair in the center of the chamber.

They were like the others she had seen, the same knotted muscles bulging on otherwise gaunt limbs, the same lank blue-black hair, the same mad glare in their wide eyes. They were armed and clad like Techotl, but on the breast of each was painted a white skull.

There were no challenges or war-cries. Like blood-mad tigers the men of Xotalanc sprang at the throats of their enemies. Techotl met them with the fury of desperation, ducked the swipe of a wide-headed blade, and grappled with the wielder, and bore him to the floor where they rolled and wrestled in murderous silence.

The other three swarmed on Valeria, their weird eyes red as the eyes of mad dogs.

[Ill.u.s.tration: "You can never reach the coast. There is no escape from Xuchotl."]

She killed the first who came within reach before he could strike a blow, her long straight blade splitting his skull even as his own sword lifted for a stroke. She side-stepped a thrust, even as she parried a slash. Her eyes danced and her lips smiled without mercy. Again she was Valeria of the Red Brotherhood, and the hum of her steel was like a bridal song in her ears.

Her sword darted past a blade that sought to parry, and sheathed six inches of its point in a leather-guarded midriff. The man gasped agonizedly and went to his knees, but his tall mate lunged in, in ferocious silence, raining blow on blow so furiously that Valeria had no opportunity to counter. She stepped back coolly, parrying the strokes and watching for her chance to thrust home. He could not long keep up that flailing whirlwind. His arm would tire, his wind would fail; he would weaken, falter, and then her blade would slide smoothly into his heart. A sidelong glance showed her Techotl kneeling on the breast of his antagonist and striving to break the other's hold on his wrist and to drive home a dagger.

Sweat beaded the forehead of the man facing her, and his eyes were like burning coals. Smite as he would, he could not break past nor beat down her guard. His breath came in gusty gulps, his blows began to fall erratically. She stepped back to draw him out--and felt her thighs locked in an iron grip. She had forgotten the wounded man on the floor.

Crouching on his knees, he held her with both arms locked about her legs, and his mate croaked in triumph and began working his way around to come at her from the left side. Valeria wrenched and tore savagely, but in vain. She could free herself of this clinging menace with a downward flick of her sword, but in that instant the curved blade of the tall warrior would crash through her skull. The wounded man began to worry at her bare thigh with his teeth like a wild beast.

She reached down with her left hand and gripped his long hair, forcing his head back so that his white teeth and rolling eyes gleamed up at her. The tall Xotalanc cried out fiercely and leaped in, smiting with all the fury of his arm. Awkwardly she parried the stroke, and it beat the flat of her blade down on her head so that she saw sparks flash before her eyes, and staggered. Up went the sword again, with a low, beast-like cry of triumph--and then a giant form loomed behind the Xotalanc and steel flashed like a jet of blue lightning. The cry of the warrior broke short and he went down like an ox beneath the pole-ax, his brains gushing from his skull that had been split to the throat.

"Conan!" gasped Valeria. In a gust of pa.s.sion she turned on the Xotalanc whose long hair she still gripped in her left hand. "Dog of h.e.l.l!" Her blade swished as it cut the air in an upswinging arc with a blur in the middle, and the headless body slumped down, spurting blood. She hurled the severed head across the room.

"What the devil's going on here?" Conan bestrode the corpse of the man he had killed, broadsword in hand, glaring about him in amazement.

Techotl was rising from the twitching figure of the last Xotalanc, shaking red drops from his dagger. He was bleeding from the stab deep in the thigh. He stared at Conan with dilated eyes.

"What is all this?" Conan demanded again, not yet recovered from the stunning surprise of finding Valeria engaged in a savage battle with these fantastic figures in a city he had thought empty and uninhabited.

Returning from an aimless exploration of the upper chambers to find Valeria missing from the room where he had left her, he had followed the sounds of strife that burst on his dumbfounded ears.

"Five dead dogs!" exclaimed Techotl, his flaming eyes reflecting a ghastly exultation. "Five slain! Five crimson nails for the black pillar! The G.o.ds of blood be thanked!"

He lifted quivering hands on high, and then, with the face of a fiend, he spat on the corpses and stamped on their faces, dancing in his ghoulish glee. His recent allies eyed him in amazement, and Conan asked, in the Aquilonian tongue: "Who is this madman?"

Valeria shrugged her shoulders.

"He says his name's Techotl. From his babblings I gather that his people live at one end of this crazy city, and these others at the other end.

Maybe we'd better go with him. He seems friendly, and it's easy to see that the other clan isn't."