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 Techultli. I and this man who lies with his throat cut came into the Halls of Silence 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 gods themselves blench at the fate of those they take alive!"

At the thought he shook as with a 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 reassuring 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 goddess 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, impassioned 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 spaces!"

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 wild 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.

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 passion she turned on the Xotalanc whose long hair she still gripped in her left hand. "Dog of hell!" 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 this 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 dumfounded ears.

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

He lifed 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."

Techotl had ceased his dancing and was listening again, his head tilted sidewise, dog-like, triumph struggling with fear in his repellent countenance.

"Come away, now!" he whispered. "We have done enough! Five dead dogs! My people will welcome you! They will honor you! But come! It is far to Tecuhltli. At any moment the Xotalancs may come on us in numbers too great even for your swords."

"Lead the way," grunted Conan.

Techotl instantly mounted a stair leading up to the gallery, beckoning them to follow him, which they did, moving rapidly to keep on his heels. Having reached the gallery, he plunged into a door that opened toward the west, and hurried through chamber after chamber, each lighted by skylights or green fire-jewels.

"What sort of place can this be?" muttered Valeria under her breath.

"Crom knows!" answered Conan. "I've seen his kind before, though. They live on the shores of Lake Zuad, near the border of Kush. They're a sort of mongrel Stygians, mixed with another race that wandered into Stygia from the east some centuries ago and were absorbed by them. They're called Tlazitlans. I'm willing to bet it wasn't they who built this city, though."

Techotl's fear did not sem to diminish as they drew away from the chamber where the dead men lay. He kept twisting his head on his shoulder to listen for sounds of pursuit, and stared with burning intensity into every doorway they passed.

Valeria shivered in spite of herself. She feared no man. But the weird floor beneath her feet, the uncanny jewels over her head, dividing the lurking shadows among them, the stealth and terror of their guide, impressed her with a nameless apprehension, a sensation of lurking, inhuman peril.

"They may be between us and Tecuhltli!" he whispered once. "We must beware lest they be lying in wait!"

"Why don't we get out of this infernal palace, and take to the streets?" demanded Valeria.

"There are no streets in Xuchotl," he answered. "No squares nor open courts. The whole city is built like one giant palace under one great roof. The nearest approach to a street is the Great Hall which traverses the city from the north gate to the south gate. The only doors opening into the outer world are the city gates, through which no living man has passed for fifty years."

"How long have you dwelt here?" asked Conan.

"I was born in the castle of Tecuhltli thirty-five years ago. I have never set foot outside the city. For the love of the gods, let us go silently! These halls may be full of lurking devils. Olmec shall tell you all when we reach Tecuhltli."

So in silence they glided on with the green fire-stones blinking overhead and the flaming floors smoldering under their feet, and it seemed to Valeria as if they fled through Hell, guided by a dark-faced lank-haired goblin.

Yet it was Conan who halted them as they were crossing an unusually wide chamber. His wilderness-bred ears were keener even than the ears of Techotl, whetted though these were by a lifetime of warfare in this silent corridors.

"You think some of your enemies may be ahead of us, lying in ambush?"

"They prowl through these rooms at all hours," answered Techotl, "as do we. The halls and chambers between Tecuhltli and Xotalanc are a disputed region, owned by no man. We call it the Halls of Silence. Why do you ask?"

"Because men are in the chambers ahead of us," answered Conan. "I heard steel clink against stone."

Again a shaking seized Techotl, and he clenched his teeth to keep them from chattering.

"Perhaps they are your friends," suggested Valeria.

"We dare not chance it," he panted, and moved with frenzied activity. He turned aside and glided through a doorway on the left which led into a chamber from which an ivory staircase wound down into darkness.

"This leads to an unlighted corridor below us!" he hissed, great beads of perspiration standing out on his brow. "They may be lurking there, too. It may all be a trick to draw us into it. But we must take the chance that they have laid their ambush in the rooms above. Come swiftly now!"

Softly as phantoms they descended the stair and came to the mouth of a corridor black as night. They crouched there for a moment, listening, and then melted into it. As they moved along, Valeria's flesh crawled between her shoulders in momentary expectation of a sword-thrust in the dark. But for Conan's iron fingers gripping her arm she had no physical cognizance of her companions. Neither made as much noise as a cat would have made. The darkness was absolute. One hand, outstretched, touched a wall, and occasionally she felt a door under her fingers. The hallway seemed interminable.

Suddenly they were galvanized by a sound behind them. Valeria's flesh crawled anew, for she recognized it as the soft opening of a door. Men had come into the corridor behind them. Even with the thought she stumbled over something that felt like a human skull. It rolled across the floor with an appalling clatter.

"Run!" yelped Techotl, a note of hysteria in his voice, and was away down the corridor like a flying ghost.

Again Valeria felt Conan's hand bearing her up and sweeping her along as they raced after their guide. Conan could see in the dark no better than she, but he possessed a sort of instinct that made his course unerring. Without his support and guidance she would have fallen or stumbled against the wall. Down the corridor they sped, while the swift patter of flying feet drew closer and closer, and then suddenly Techotl panted: "Here is the stair! After me, quick! Oh, quick!"

His hand came out of the dark and caught Valeria's wrist as she stumbled blindly on the steps. She felt herself half dragged, half lifted up the winding stair, while Conan released her and turned on the steps, his ears and instincts telling him their foes were hard at their backs. And the sounds were not all those of human feet.

Something came writhing up the steps, something that slithered and rustled and brought a chill in the air with it. Conan lashed down with his great sword and felt the blade shear through something that might have been flesh and bone, and cut deep into the stair beneath. Something touched his foot that chilled like the touch of frost, and then the darkness beneath him was disturbed by a frightful thrashing and lashing, and a man cried out in agony.

The next moment Conan was racing up the winding staircase, and through a door that stood open at the head.

Valeria and Techotl were already through, and Techotl slammed the door and shot a bolt across it—the first Conan had seen since they had left the outer gate.

Then he turned and ran across the well-lighted chamber into which they had come, and as they passed through the farther door, Conan glanced back and saw the door groaning and straining under heavy pressure violently applied from the other side.

Though Techotl did not abate either his speed or his caution, he seemed more confident now. He had the air of a man who had come into familiar territory, within call of friends.

But Conan renewed his terror by asking: "What was that thing I fought on the stairs?"

"The men of Xotalanc," answered Techotl, without looking back. "I told you the halls were full of them."

"This wasn't a man," grunted Conan. "It was something that crawled, and it was as cold as ice to the touch. I think I cut it asunder. It fell back on the men who were following us, and must have killed one of them in its death throes."

Techotl's head jerked back, his face ashy again. Convulsively he quickened his pace.

"It was the Crawler! A monster they have brought out of the catacombs to aid them! What it is, we do not know, but we have found our people hideously slain by it. In Set's name, hasten! If they put it on our trail, it will follow us to the very doors of Tecuhltli!"

"I doubt it," grunted Conan. "That was a shrewd cut I dealt it on the stair."

"Hasten! Hasten!" groaned Techotl.

They ran through a series of green-lit chambers, traversed a broad hall, and halted before a giant bronze door.

Techotl said: "This is Tecuhltli!"