"How?" whispered the high priest. "How may I become high priest at A-lur?" Again Pan-sat leaned close: "By killing the one and bringing the other to A-lur," replied he. Then he rose and departed knowing that the other had swallowed the bait and could be depended upon to do whatever was required to win him the great prize. Nor was Pan-sat mistaken other than in one trivial consideration. This high priest would indeed commit murder and treason to attain the high office at A-lur; but he had misunderstood which of his victims was to be killed and which to be delivered to Lu-don. Pan-sat, knowing himself all the details of the plannings of Lu-don, had made the quite natural error of assuming that the other was perfectly aware that only by publicly sacrificing the false Dor-ul-Otho could the high priest at A-lur bolster his waning power and that the assassination of Mo-sar, the pretender, would remove from Lu-don's camp the only obstacle to his combining the offices of high priest and king. The high priest at Tu-lur thought that he had been commissioned to kill Tarzan and bring Mo-sar to A-lur. He also thought that when he had done these things he would be made high priest at A-lur; but he did not know that already the priest had been selected who was to murder him within the hour that he arrived at A-lur, nor did he know that a secret grave had been prepared for him in the floor of a subterranean chamber in the very temple he dreamed of controlling. And so when he should have been arranging the assassination of his chief he was leading a dozen heavily bribed warriors through the dark corridors beneath the temple to slay Tarzan in the lion pit. Night had fallen. A single torch guided the footsteps of the murderers as they crept stealthily upon their evil way, for they knew that they were doing the thing that their chief did not want done and their guilty consciences warned them to stealth. In the dark of his cell the ape-man worked at his seemingly endless chipping and scraping. His keen ears detected the coming of footsteps along the corridor without--footsteps that approached the larger door. Always before had they come to the smaller door--the footsteps of a single slave who brought his food. This time there were many more than one and their coming at this time of night carried a sinister suggestion. Tarzan continued to work at his scraping and chipping. He heard them stop beyond the door. All was silence broken only by the scrape, scrape, scrape of the ape-man's tireless blade.