The dagger was gone from the floor. The chamber was empty, and so was the dais. Yelaya had again vanished.

"By Crom!" muttered the Cimmerian. "Is she alive, after all?"

He strode out into the throne room, baffled, and then, struck by a sudden thought, stepped behind the throne and peered into the alcove. There was blood on the smooth marble where he had cast down the senseless body of Gwarunga — that was all. The black man had vanished as completely as Yelaya.

Baffled wrath confused the brain of Conan the Cimmerian. He knew no more how to go about searching for Muriela than he had known how to go about searching for the Teeth of Gwahlur. Only one thought occurred to him — to follow the priests. Perhaps at the hiding-place of the treasure some clue would be revealed to him. It was a slim chance, but better than wandering about aimlessly.

As he hurried through the great shadowy hall that led to the portico he half expected the lurking shadows to come to life behind him with rending fangs and talons. But only the beat of his own rapid heart accompanied him into the moonlight that dappled the shimmering marble.

At the foot of the wide steps he cast about in the bright moonlight for some sight to show him the direction he must go. And he found it — petals scattered on the sward told where an arm or garment had brushed against a blossom-laden branch. Grass had been pressed down under heavy feet. Conan, who had tracked wolves in his native hills, found no insurmountable difficulty in following the trail of the Keshani priests.

It led away from the palace, through masses of exotic-scented shrubbery where great pale blossoms spread their shimmering petals, through verdant, tangled bushes that showered blooms at the touch, until he came at last to a great mass of rock that jutted like a titan's castle out from the cliffs at a point closest to the palace, which, however, was almost hidden from view by vine-interlaced trees. Evidently that babbling priest in Keshia had been mistaken when he said the Teeth were hidden in the palace. This trail had led him away from the place where Muriela had disappeared, but a belief was growing in Conan that each part of the valley was connected with that palace by subterranean passages.

Crouching in the deep, velvet-black shadows of the bushes, he scrutinized the great jut of rock which stood out in bold relief in the moonlight. It was covered with strange, grotesque carvings, depicting men and animals, and half-bestial creatures that might have been gods or devils. The style of art differed so strikingly from that of the rest of the valley, that Conan wondered if it did not represent a different era and race, and was itself a relic of an age lost and forgotten at whatever immeasurably distant date the people of Alkmeenon had found and entered the haunted valley.

A great door stood open in the sheer curtain of the cliff, and a gigantic dragon's head was carved about it so that the open door was like the dragon's gaping mouth. The door itself was of carven bronze and looked to weigh several tons. There was no lock that he could see, but a series of bolts showing along the edge of the massive portal, as it stood open, told him that there was some system of locking and unlocking — a system doubtless known only to the priests of Keshan.

The trail showed that Gorulga and his henchemen had gone through that door. But Conan hesitated. To wait until they emerged would probably mean to see the door locked in his face, and he might not be able to solve the mystery of its unlocking. On the other hand, if he followed them in, they might emerge and lock him in the cavern.

Throwing caution to the winds, he glided through the great portal. Somewhere in the cavern were the priests, the Teeth of Gwahlur, and perhaps a clue to the fate of Muriela. Personal risks had never yet deterred him from any purpose.

Moonlight illumined, for a few yards, the wide tunnel in which he found himself. Somewhere ahead of him he saw a faint glow and heard the echo of a weird chanting. The priests were not so far ahead of him as he had thought. The tunnel debouched into a wide room before the moonlight played out, an empty cavern of no great dimensions, but with a lofty, vaulted roof, glowing with a phosphorescent encrustation, which, as Conan knew, was a common phenomenon in that part of the world. It made a ghostly half-light, in which he was able to see a bestial image squatting on a shrine, and the black mouths of six or seven tunnels leading off from the chamber. Down the widest of these — the one directly behind the squat image which looked toward the outer opening — he caught the gleam of torches wavering, whereas the phosphorescent glow was fixed, and heard the chanting increase in volume.

Down it he went recklessly, and was presently peering into a larger cavern than the one he had just left. There was no phosphorus here, but the light of the torches fell on a larger altar and a more obscene and repulsive god squatting toad-like upon it. Before this repugnant deity Gorulga and his ten acolytes knelt and beat their heads upon the ground, while chanting monotonously. Conan realized why their progress had been so slow. Evidently approaching the secret crypt of the Teeth was a complicated and elaborate ritual.

He was fidgeting in nervous impatience before the chanting and bowing were over, but presently they rose and passed into the tunnel which opened behind the idol. Their torches bobbed away into the nighted vault, and he followed swiftly. Not much danger of being discovered. He glided along the shadows like a creature of the night, and the black priests were completely engrossed in their ceremonial mummery. Apparently they had not even noticed the absence of Gwarunga.

Emerging into a cavern of huge proportions, about whose upward curving walls gallery-like ledges marched in tiers, they began their worship anew before an altar which was larger, and a god which was more disgusting, than any encountered thus far.

Conan crouched in the black mouth of the tunnel, staring at the walls reflecting the lurid glow of the torches. He saw a carven stone stair winding up from tier to tier of the galleries; the roof was lost in darkness.

He started violently and the chanting broke off as the kneeling blacks flung up their heads. An inhuman voice boomed out high above them. They froze on their knees, their faces turned upward with a ghastly blue hue in the sudden glare of a weird light that burst blindingly up near the lofty roof and then burned with a throbbing glow. That glare lighted a gallery and a cry went up from the high priest, echoed shudderingly by his acolytes. In the flash there had been briefly disclosed to them a slim white figure standing upright in a sheen of silk and a glint of jewel-crusted gold. Then the blaze smoldered to a throbbing, pulsing luminosity in which nothing was distinct, and that slim shape was but a shimmering blur of ivory.

"Yelaya! " screamed Gorulga, his brown features ashen. "Why have you followed us? What is your pleasure?"

That weird unhuman voice rolled down from the roof, reechoing under that arching vault that magnified and altered it beyond recognition.

"Woe to the unbelievers! Woe to the false children of Keshia! Doom to them which deny their deity!"

A cry of horror went up from the priests. Gorulga looked like a shocked vulture in the glare of the torches.

"I do not understand!" he stammered. "We are faithful. In the chamber of the oracle you told us — "

"Do not heed what you heard in the chamber of the oracle!" rolled that terrible voice, multiplied until it was as though a myriad voices thundered and muttered the same warning. "Beware of false prophets and false gods! A demon in my guise spoke to you in the palace, giving false prophecy. Now harken and obey, for only I am the true goddess, and I give you one chance to save yourselves from doom!