The slave girl bowed low and backed from the room.

For several moments after she departed, no sound broke the silence of the room; but always I felt the eyes of Ozara upon me.

Presently she laughed, a silvery musical laugh. "What is your name?" she demanded.

I pretended that I did not hear her, as I found occupation for my eyes in examination of the beauties of the chamber. It appeared to be the boudoir of the empress, and it made a lovely setting for her unquestionable loveliness.

"Listen," she said, presently; "you fooled Ul Vas and Zamak and the High Priest and all the rest of them; but you did not fool me. I will admit that you have splendid control, but your eyes betrayed you. They betrayed you in the audience chamber; and they betrayed you again just now as you entered this room, just as I knew they would betray you. They showed surprise when they rested upon me, and that can mean only one thing; that you saw and recognized me.

"I knew, too, in the audience chamber, that you understood what was being said. You are a highly intelligent creature, and the changing lights in your eyes reflected your reaction to what you heard in the audience chamber.

"Let us be honest with one another, you and I, for we have more in common than you guess. I am not unfriendly to you. I understand why you think it to your advantage to conceal the fact that you can see and hear us; but I can assure you that you will be no worse off if you trust me, for I already know that we are neither invisible nor inaudible to you."

I could not fathom what she meant by saying we had much in common, unless it were merely a ruse to lure me into an admission that I could both see and hear the Tarids; yet on the other hand, I could see no reason to believe that either she or the others would profit by this knowledge. I was absolutely in their power, and apparently it made little difference whether I could see and hear them or not. Furthermore, I was convinced that this girl was extremely clever and that I could not deceive her into believing that she was invisible to me. On the whole, I saw no reason to attempt to carry the deception further with her; and so I looked her squarely in the eyes and smiled.

"I shall be honored by the friendship of the Jeddara, Ozara," I said.

"There!" she exclaimed; "I knew that I was right."

"Yet perhaps you had a little doubt."

"If I did, it is because you are a past master in the art of deception."

"I felt that the lives and liberty of my companions and myself might depend upon my ability to keep your people from knowing that I can see and understand them."

"You do not speak our language very well," she said. "How did you learn it?"

"The Masena with whom I was imprisoned taught me it," I explained.

"Tell me about yourself," she demanded; "your name, your country, the strange contrivances in which you came to the last stronghold of the Tarids, and your reason for coming."

"I am John Carter," I replied, "Prince of the house of Tardos Mors, Jeddak of Helium."

"Helium?" she questioned. "Where is Helium? I never heard of it."

"It is on another world," I explained, "on Barsoom, the great planet that you call your larger moon."

"You are, then, a prince in your own country?" she said. "I thought as much. I am seldom mistaken in my estimate of people. The two women and one of the other men among your companions are well-bred," she continued; "the other two men are not. One of them, however, has a brilliant mind, while the other is a stupid lout, a low brute of a man."

I could not but smile at her accurate appraisal of my companions. Here, indeed, was a brilliant woman. If she really cared to befriend me, I felt that she might accomplish much for us; but I did not allow my hopes to rise too high, for after all she was the mate of Ul Vas, the Jeddak who had condemned us to death.

"You have read them accurately, Jeddara," I told her.

"And you," she continued; "you are a great man in your own world. You would be a great man in any world; but you have not told me why you came to our country."

"The two men that you last described abducted a princess of the reigning house of my country."

"She must be the very beautiful one," mused Ozara.

"Yes," I said. "With the other man and the girl, I pursued them in another ship. Shortly after we reached Ladan, we saw their ship in the courtyard of your castle. We landed beside it to rescue the princess and punish her abductors. It was then that your people captured us."

"Then you did not come to harm us?" she asked.

"Certainly not," I replied. "We did not even know of your existence."

She nodded. "I was quite sure that you intended us no harm," she said, "for enemies would never have placed themselves thus absolutely in our power; but I could not convince Ul Vas and the others."

"I appreciate your belief in me," I said; "but I cannot understand why you have taken this interest in me, an alien and a stranger."

She contemplated me in silence for a moment, her beautiful eyes momentarily dreamy.

"Perhaps it is because we have so much in common," she said; "and again perhaps because of a force that is greater than all others and that seizes and dominates us without our volition."

She paused and regarded me intently, and then she shook her head impatiently.

"The thing that we have in common," she said, "is that we are both prisoners in the castle of Ul Vas. The reason that I have taken this interest in you, you would understand if you are one-tenth as intelligent as I gave you credit for."

CHAPTER XX. WE ATTEMPT ESCAPE

Ozara may have overestimated my intelligence, but she underestimated my caution.

I could not admit that I understood the inference that I was supposed to draw from what she had said to me. As a matter of fact, the implication was so preposterous that at first I was inclined to believe that it was a ruse intended to trap me into some sort of an admission of ulterior designs upon her people, after she had wholly won my confidence; and so I sought to ignore the possible confession in her final statement by appearing to be dumbfounded by her first statement, which really was a surprise to me.

"You, a prisoner?" I demanded. "I thought that you were the Jeddara of the Tarids."

"I am," she said, "but I am no less a prisoner."

"But are not these your people?" I asked.

"No," she replied; "I am a Domnian. My country, Domnia, lies far away across the mountains that lie beyond the forest that surrounds the castle of Ul Vas."

"And your people married you to Ul Vas, Jeddak of the Tarids?" I asked.

"No," she replied; "he stole me from them. My people do not know what has become of me. They would never willingly have sent me to the court of Ul Vas, nor would I remain here, could I escape. Ul Vas is a beast. He changes his jeddaras often. His agents are constantly searching other countries for beautiful young women.

"When they find one more beautiful than I, I shall go the way of my predecessors; but I think that he has found one to his liking already, and that my days are numbered."

"You think that his agents have found another more beautiful than you?" I asked; "it seems incredible."

"Thank you for the compliment," she said "but his agents have not found another more beautiful than I. Ul Vas has found her himself. In the audience chamber, did you not see him looking at your beautiful compatriot? He could scarcely keep his eyes from her, and you will recall that her life was spared."

"So was the life of the girl, Zanda," I reminded her. "Is he going to take her also to be his jeddara?"

"No, he may only have one at a time," replied Ozara. The girl whom you call Zanda is for the High Priest. It is thus that Ul Vas propitiates the gods."