CADJ and his hundred , armed with their bludgeons and knives, crept stealthily down the face of the barrier into the valley below, upon the trail of the white man and his black companions. They made no haste, for they had from the summit of Opar’s outer wall, that the party they were pursuing moved very slowly, though why, they did not know, for they had been at too great a distance to see the burden that each of the blacks carried. Nor was it Cadj’s desire to overtake his by daylight, his plans a stealthy night attack, the suddenness of which, together with the great number of his followers, might easily confuse and overwhelm a sleeping camp.  
The spoor they followed was well marked. There could be no mistaking it, and they moved slowly down the now gentle , toward the bottom of the valley. It was close to noon that they were brought to a sudden halt by the discovery of a thorn boma recently constructed in a small clearing just ahead of them. From the center of the boma arose the thin smoke of a dying fire. Here, then, was the camp of the ape-man.
 
Cadj drew his followers into the of the thick bushes that bordered the trail, and from there he sent ahead a single man to reconnoiter. It was but a few moments later that the latter returned to say that the camp was , and once again Cadj moved forward with his men. Entering the boma they examined it in an effort to estimate the size of the party that accompanied Tarzan. As they were thus occupied Cadj saw something lying half by bushes at the far end of the boma. Very warily he approached it, for there was that about it which not only aroused his curiosity but prompted him to caution, for it resembled indistinctly the figure of a man, lying upon the ground.
 
With ready bludgeons a dozen of them approached the thing that had aroused Cadj’s curiosity, and when they had come close to it they saw lying before them the lifeless figure of Tarzan of the Apes.
 
“The Flaming God has reached to his altar,” cried the High Priest, his eyes glowing with the fires of . But another priest, more practical, perhaps, or at least more cautious, kneeled beside the figure of the ape-man and placed his ear against the latter’s heart.
 
“He is not dead,” he whispered; “perhaps he only sleeps.”
 
“Seize him, then, quickly,” cried Cadj, and an instant later Tarzan’s body was covered by the hairy forms of as many of the frightful men as could pile upon him. He offered no resistance—he did not even open his eyes, and presently his arms were securely bound behind him.
 
“Drag him forth where the eye of the Flaming God may rest upon him,” cried Cadj. They dragged Tarzan out into the center of the boma into the full light of the sun, and Cadj, the High Priest, drawing his knife from his loin cloth, raised it above his head and stood over the form of his intended victim. Cadj’s followers formed a rough circle about the ape-man and some of them pressed close behind their leader. They appeared uneasy, looking alternately at Tarzan and their High Priest, and then casting glances at the sun, riding high in a cloud-mottled sky. But whatever the thoughts that troubled their half-savage brains, there was only one who dared voice his, and he was the same priest who, upon the preceding day, had questioned Cadj’s proposal to the ape-man.
 
“Cadj,” he said now, “who are you to offer up a sacrifice to the Flaming God? It is the privilege alone of La, our High Priestess and our queen, and indeed will she be angry when she learns what you have done.”
 
“Silence, Dooth!” cried Cadj; “I, Cadj, am the High Priest of Opar. I, Cadj, am the mate of La, the queen. My word, too, is law in Opar. And you would remain a priest, and you would remain alive, keep silence.”
 
“Your word is not law,” replied Booth, angrily, “and if you anger La, the High Priestess, or if you anger the Flaming God, you may be punished as another. If you make this sacrifice both will be angry.”
 
“Enough,” cried Cadj; “the Flaming God has spoken to me and has demanded that I offer up as sacrifice this of his temple.”
 
He knelt beside the ape-man and touched his breast above the heart with the point of his sharp blade, and then he raised the weapon high above him, preparatory to the fatal into the living heart. At that instant a cloud passed before the face of the sun and a shadow rested upon them. A rose from the surrounding priests.
 
“Look,” cried Dooth, “the Flaming God is angry. He has hidden his face from the people of Opar.”
 
Cadj paused. He cast a half-defiant, half-frightened look at the cloud obscuring the face or the sun. Then he rose slowly to his feet, and extending his arms upward toward the hidden god of day, he remained for a moment silent in and listening attitude. Then, suddenly, he turned upon his followers.
 
“Priests of Opar,” he cried, “the Flaming God has spoken to his High Priest, Cadj. He is not angered. He but wishes to speak to me alone, and he directs that you go away into the jungle and wait until he has come and spoken to Cadj, after which I shall call you to return. Go!”
 
For the most part they seemed to accept the word of Cadj as law, but Dooth and a few others, doubtless prompted by a certain skepticism, hesitated.
 
“Be gone!” commanded Cadj. And so powerful is the habit of that the doubters finally turned away and melted into the jungle with the others. A smile lighted the cruel face of the High Priest as the last of them disappeared from sight, and then he once again turned his attention to the ape-man. That, deep within his breast however, an inherent fear of his , was evidenced by the fact that he turned questioning glances toward the sky. He had to slay the ape-man while Dooth and the others were absent, yet the fear of his god restrained his hand until the light of his deity should shine forth upon him once more and assure him that the thing he might meet with favor.
 
It was a large cloud that the sun, and while Cadj waited his nervousness increased. Six times he raised his knife for the fatal blow, yet in each instance his prevented the consummation of the act. Five, ten, fifteen minutes passed, and still the sun remained obscured. But now at last Cadj could see that it was nearing the edge of the cloud, and once again he took his position kneeling beside the ape-man with his blade ready for the moment that the sunlight should flood again, for the last time, the living Tarzan. He saw it slowly across the boma toward him, and as it came a look of demoniacal shone in his close-set, wicked eyes. Another instant and the Flaming God would have set the seal of his approval upon the sacrifice. Cadj trembled in . He raised the knife a trifle higher, his muscles tensed for the downward plunge, and then the silence of the jungle was broken by a woman’s voice, raised almost to a scream.
 
“Cadj!” came the single word, but with all the suddenness and all the surprising effect of lightning from a clear sky.
 
His knife still on high, the High Priest turned in the direction of the interruption to see at the clearing’s edge the figure of La, the High Priestess, and behind her Dooth and a score of the priests.
 
“What means this, Cadj?” demanded La, angrily, approaching rapidly toward him across the clearing. the High Priest rose.
 
“The Flaming God demanded the life of this unbeliever,” he cried.
 
“Speaker of lies,” retorted La, “the Flaming God communicates with men through the lips of his High Priestess only. Too often already have you attempted to the will of your queen. Know, then, Cadj, that the power of life and death which your queen holds is as over you as another. During the long ages that Opar has endured, our legends tell us that more than one High Priest has been offered upon the altar to the Flaming God. And it is not unlikely that yet another may go the way of the . , therefore, your vanity and your for power, lest they prove your .”
 
Cadj his knife and turned sullenly away, casting a venomous look at Dooth, to whom he evidently attributed his undoing. That he was temporarily by the presence of his queen was evident, but to those who knew Cadj there was little doubt that he still harbored his intention to the ape-man, and if the opportunity ever presented itself that he would do so, for Cadj had a strong following among the people and priests of Opar. There were many who doubted that La would ever dare to the displeasure and anger of so important a portion of her followers as to cause the death or of their high priest, who occupied his office by of laws and customs so old that their origin had been long lost in .
 
For years she had found first one excuse and then another to delay the ceremonies that would unite her in marriage to the High Priest. She had further aroused the of her people by palpable proofs of her infatuation for the ape-man, and even though at last she had been compelled to mate with Cadj, she had made no effort to her hatred and for the man. How much further she could go with was a question that often troubled those whose position in Opar depended upon her favor, and, knowing all these conditions as he did, it was not strange that Cadj should entertain treasonable thoughts toward his queen. Leagued with him in his treachery was Oah, a priestess who to the power and offices of La. If La could be done away with, then Cadj had the influence to see that Oah became High Priestess. He also had Oah’s promise to mate with him and permit him to rule as king, but as yet both were bound by the fear of their flaming deity, and because of this fact was the life of La temporarily made safe. It required, however, but the slightest spark to ignite the flames of treason that were about her.
 
So far, she was well within her rights in forbidding the sacrifice of Tarzan by the High Priest. But her fate, her very life, perhaps, depended upon her future treatment of the prisoner. Should she spare him, should she evidence in any way a return of the great love she had once almost publicly for him, it was likely that her would be sealed. It was even whether or not she might with impunity spare his life and set him at liberty.
 
Cadj and the others watched her closely now as she crossed to the side of Tarzan. there silently for several moments she looked down upon him.
 
“He is already dead?” she asked.
 
“He was not dead when Cadj sent us away,” volunteered Dooth. “If he is dead now it is because Cadj killed him while we were away.”
 
“I did not kill him,” said Cadj. “That , as La, our queen, has told you, for her to do. The eye of the Flaming God looks down upon you, High Priestess of Opar. The knife is at your , the sacrifice lies before you.”
 
La ignored the man’s words and turned toward Dooth. “If he still lives,” she said, “construct a litter and bear him back to Opar.”
 
Thus, once more, came Tarzan of the Apes into the ancient colonial city of the Atlantians. The effects of the that Kraski had administered to him did not wear off for many hours. It was night when he opened his eyes, and for a moment he was bewildered by the darkness and the silence that surrounded him. All that he could at first was that he lay upon a pile of furs and that he was uninjured; for he felt no pain. Slowly there broke through the fog of his drugged brain recollection of the last moment before unconsciousness had overcome him, and presently he realized the trick that had been played upon him. For how long he had been unconscious and where he then was he could not imagine. Slowly he arose to his feet, finding that except for a slight dizziness he was quite himself. Cautiously he felt around in the darkness, moving with care, a hand outstretched, and always feeling carefully with his feet for a secure footing. Almost immediately a stone wall stopped his progress, and this he followed around four sides of what he soon realized was a small room in which there were but two openings, a door upon each of the opposite sides. Only his senses of touch and smell were of value to him here. These told him only at first that he was in a , but as the effects of the narcotic diminished, the keenness of the latter returned, and with its return there was borne in upon Tarzan’s brain an impression of familiarity in certain odors that impinged upon his organs—a haunting suggestion that he had known them before under similar circumstances. Presently from above, through earth and , came the shadow of an uncanny scream—just the faintest suggestion of it reached the keen ears of the ape-man, but it was sufficient to flood his mind with vivid recollections, and, by association of ideas, to fix the identity of the familiar odors about him. He knew at last that he was in the dark pit beneath Opar.
 
Above him, in her chamber in the temple, La, the High Priestess, tossed upon a couch. She knew all too well the temper of her people and the treachery of the High Priest, Cadj. She knew the religious fanaticism which prompted the ofttime maniacal actions of her and ignorant followers, and she guessed truly that Cadj would them against her should she fail this time in sacrificing the ape-man to the Flaming God. And it was the effort to find an escape from her that left her sleepless, for it was not in the heart of La to sacrifice Tarzan of the Apes. High Priestess of a , though she was, and queen of a race of half-beasts, yet she was a woman, too, a woman who had loved but once and given that love to the godlike ape-man who was again within her power. Twice before had he escaped her sacrificial knife; in the final instance love had at last triumphed over and fanaticism, and La, the woman, had realized that never again could she place in the life of the man she loved, however hopeless she knew that love to be.
 
Tonight she was faced with a problem that she felt almost beyond her powers of solution. The fact that she was mated with Cadj removed the last of hope that she had ever had of becoming the wife of the ape-man. Yet she was no less determined to save Tarzan if it were possible. Twice had he saved her life, once from a mad priest, and once from Tantor in must. Then, too, she had given her word that when Tarzan came again to Opar he came in friendship and would be received in friendship. But the influence of Cadj was great, and she knew that that influence had been directed unremittingly against the ape-man—she had seen it in the attitude of her followers from the very moment that they had placed Tarzan upon a litter to bear him back to Opar—she had seen it in the evil glances that had been cast at her. Sooner or later they would dare denounce her—all that they needed was some slight, new excuse, that, she knew, they eagerly awaited in her forthcoming attitude toward Tarzan. It was well after midnight when there came to her one of the priestesses who remained always upon guard outside her chamber door.
 
“Dooth would speak with you,” whispered the hand-maiden.
 
“It is late,” replied La, “and men are not permitted in this part of the temple. How came he here, and why?”
 
“He says that he comes in the service of La, who is in great danger,” replied the girl.
 
“Fetch him here then,” said La, “and as you value your life see that you tell no one.”
 
“I shall be as voiceless as the stones of the altar,” replied the girl, as she turned and left the chamber.
 
A moment later she returned, bringing Dooth, who halted a few feet from the High Priestess and her. La signaled to the girl who had brought him, to depart, and then she turned questioningly to the man.
 
“Speak, Dooth!” she commanded.
 
“We all know,” he said, “of La’s love for the strange ape-man, and it is not for me, a lesser priest, to question the thoughts or acts of my High Priestess. It is only for me to serve, as those would do better to serve who now plot against you.”
 
“What do you mean, Dooth? Who plots against me?”
 
“Even at this minute are Cadj and Oah and several of the priests and priestesses carrying out a plan for your undoing. They are setting spies to watch you, knowing that you would the ape-man, because there will come to you one who will tell you that to permit him to escape will be the easiest solution of your problem. This one will be sent by Cadj, and then those who watch you will report to the people and to the priests that they have seen you lead the sacrifice to liberty. But even that will avail you nothing, for Cadj and Oah and the others have placed upon the trail from Opar many men in hiding, who will fall upon the ape-man and slay him before the Flaming God has twice into the western forest. In but one way only may you save yourself, La of Opar.”
 
“And what is that way?” she asked.
 
“You must, with your own hands, upon the altar of our temple, sacrifice the ape-man to the Flaming God.”