They had gone but a short distance in the direction in which Tarzan thought the temple lay, when they came upon Herkuf. He, too, had been waiting for daylight, feeling certain that Tarzan would have done the same and that, having leaped overboard almost simultaneously, they could not be far separated. It was with feelings of the greatest relief that they found themselves reunited.
Herkuf took the lead now, and with Tarzan and Helen following, commenced the tiresome and dangerous journey toward Ashair, all of them now greatly encouraged after the long hours of doubt and uncertainty.
They had not gone far when they came upon the wreck of a large galley partly embedded in the sand. That it had been there for years was attested by the size of the marine growth which had sprouted through its ribs, entwining the skeletons of its slaves still lying in their rusted chains.
Herkuf evinced considerable excitement; and, motioning them to wait, clambered into the interior of the craft, from which he presently emerged carrying a splendid jeweled casket. That he was overcome by excitement was obvious, but hampered by his helmet he could only express it by waving the casket before their faces and dancing jubilantly. What it was he had recovered, they could not guess, unless it were that the casket contained treasure of fabulous worth.
At last, and without further adventure, they approached the temple of Brulor; and here they went cautiously, seeking the shelter of the trees and plants that grew in the gardens of the ptomes, moving stealthily from one to another, each time assuring themselves that no ptome was in sight, knowing that at any moment one might emerge from the air chamber that they could now see. Approaching the temple, they found a place where they could hide concealed from the gardens and the air chamber door. Here they must wait until Herkuf signalled that the time had arrived when it might be safe to enter the temple. How long that would be only he could guess with any degree of accuracy. Near them was a window through which they could have looked into the temple had they dared; but as long as it was light outside they could not take the risk; and so they waited, tired, hungry, and thirsty; waited for night to fall.
Inside the temple the caged prisoners were gnawing on their evening meal of raw fish. Atan Thome enlarged in glowing terms upon his plans when he should come into possession of The Father of Diamonds and dazzle the world with his wealth. Lal Taask, scowling, cursed him. Akamen brooded in silence upon his lost liberty and his vanished dream of power. Brian and d'Arnot spoke together in low tones. Lavac paced his cage like a captive polar bear.
"I think your friend, Tarzan, has run off and left us," remarked Brian.
"You think that because you don't know him as well as I do," replied d'Arnot. "As long as he and we live he will try to rescue us."
"He will have to be a super-man to do it," said Brian.
"He is—that and all of that. He may fail, of course, but he will come nearer succeeding than any man who lives."
"Well, anyway, he got Helen out of that torture chamber they'd put her in," said Brian. "Wasn't old Brulor sore, though! Of course he really hasn't had time to get her to a place of safety and come back for us; but every minute is an hour in here, and so it seems like a very long time since he went away. Did you know he was going?"
"Yes; he told me; but I didn't know when he and Herkuf left. I was asleep. I am sure he must have gotten her out; otherwise he'd have been back after us."
"Unless he was killed," suggested Brian. "Anyway we know he took her out. That was what old Brulor was raving about."
"I mean out of the lake—to some place of safety. Sometimes I think I'll go crazy if I don't know."
"We've got one nut here now," said Brian, nodding toward Atan Thome. "We couldn't stand another. Anyway, wait until you've been here as long as I have; then you'll really have an excuse to go cuckoo."
"They're all clearing out of the throne room now," said d'Arnot. "The period of meditation has come. I wonder what they meditate about."
"Meditate, hell!" exclaimed Brian. "Ask the handmaidens."
Outside the temple the weary trio waited. Since the evening before they had had neither food nor water, nor spoken a single word; but now Herkuf cautiously moved to a spot opposite the window but not too close to it. It was dark now, and there was little danger that he would be seen from the inside. The throne room was deserted except for the prisoners. He came back to Tarzan and Helen and nodded that all was right; then he left the casket at Helen's feet' and motioned that she was to remain where she was. She was very lonely after Tarzan and Herkuf left her.
This was the moment for which the two men had been waiting. What did it hold for them? Carrying out the plan they had carefully laid out in every detail, the two men each speared a fish; then, with their quarry wriggling on their tridents, they went to the air chamber. It was only a matter of a few moments before they had passed through it and stood in the corridor leading to the ptomes' room.
Beside them was another door opening into a passageway that led to the throne room, avoiding the ptomes' room. Herkuf tried to open it, but could not. He shrugged. There was nothing to do now but make the attempt to pass through the room where the ptomes should be sleeping. They prayed that they were sleeping. Cautiously, Herkuf opened the door to that room and looked in; then he beckoned Tarzan to follow him.
The entire success of their venture depended upon their reaching the throne room unchallenged. They had almost succeeded, when a ptome, awakening, sat up and looked at them. With their fish upon their tridents, the two men continued on unconcernedly across the room. The sleepy ptome, scarce awake, thought them two of his own kind, and lay down to sleep again. Thus they came in safety to the throne room, while outside, Helen waited in the loneliness of the black water. She was almost happy, so certain was she that Tarzan and Herkuf would succeed in liberating d'Arnot, Brian, and Lavac; but then she was not aware of the figure in a white water suit that was swimming down toward her from above and behind. Whatever it was, it was evident that it had discovered her and was swimming directly toward her.
Tarzan and Herkuf hurried directly to the cages, tossing their fish to the floor. The excited prisoners watched them, for they had never seen ptomes behave like this. Only d'Arnot really guessed who they were. Seizing the bars in his powerful grasp, Tarzan released them one after the other, cautioning them to silence with a gesture; then he removed his helmet and told d'Arnot, Brian, and Lavac to put on the three water suits that Herkuf carried.
"The rest of you," he said, "may be able to escape by the secret passage at the end of the long corridor. Does any of you know where to find it and open it?"
"I do," replied Akamen.
"So do I," said Atan Thome. "I learned from Akamen." As he spoke he darted toward the altar and seized the casket containing The Father of Diamonds, the accursed casket that had wrought such havoc.
As Helen felt a hand seize her from behind, she turned to see the strange figure in white confronting her; and her vision of a successful termination of their venture faded. Once again she was plunged into the depths of despair. She tried to wrench herself free from the restraining hand, but she was helpless to escape. She realized that she must not be taken now, for it might jeopardize the lives and liberty of all her companions; she knew that they would search for her and that the delay might prove fatal to them. A sudden rage seized her; and, wheeling, she tried to drive her trident into the heart of her captor. But the creature that held her was alert and powerful. It wrenched the trident from her hands and cast it aside; then it seized her by a wrist and swam up with her toward the surface of the lake. The girl still struggled, but she was helpless. To what new and unpredictable fate was she being dragged? Who, now, might find or save her?