"You need not fear me," she said, "I will not betray you."

"You are a wise girl," I said; "you have bought your life very cheaply."

"It was not to save my life that I promised," she said. "I would not have betrayed you in any event."

"And why?" I asked. "You owe me nothing."

"I love my mistress, Ozara," she said simply.

"And what has that to do with it?" I asked.

"I would not harm one whom my mistress loves."

Of course, I knew that Ulah was romancing—letting her imagination work overtime; and as it was immaterial what she believed so long as she helped me, I did not contradict her.

"Where is your mistress now?" I asked.

"She is in this very tower," she replied. "She is locked in a room directly above this one, on the next level. Ul Vas is keeping her there until he is ready to destroy her. Oh, save her, John Carter, save her!"

"How did you learn my name, Ulah?" I asked.

"The Jeddara told me," she replied; "she talked about you constantly."

"You are better acquainted with the castle than I am, Ulah," I said; "is there any way in which I can reach the Jeddara? "Can you get a message to her? Could we get her out of that room?"

"No," she replied; "the door is locked, and two warriors stand guard outside it day and night."

I walked to the window and looked out. There seemed to be no one in sight. Then I leaned out as far as I could and looked up. Perhaps fifteen feet above me was another window. I turned back into the room.

"You are sure that the Jeddara is in the room directly above this?" I asked.

"I know it," she replied.

"And you want to help her to escape?"

"Yes; there is nothing that I would not do to serve her."

"What is this room used for?" I asked.

"Nothing, now," she replied; "you see everything is covered with dust. It has not been used for a long time."

"You think it is not likely that anyone will come here?" I asked. "You think I might hide here safely until tonight?"

"I am sure that you are perfectly safe," she replied; "I do not know why anyone should come here."

"Good!" I exclaimed. "Do you really want to help your mistress to escape?"

"With all my heart," she replied. "I could not bear to see her die."

"You can help her, then," I said.

"How?"

"Bring me a rope and a strong hook. Do you think you can do it?"

"How long a rope?"

"About twenty feet."

"When do you want them?"

"Whenever you can bring them without danger of detection, but certainly before midnight tonight."

"I can get them," she said. "I will go at once."

I had to trust her; there was no other way, and so I let her depart.

After she had gone and I had closed the door behind her, I found a heavy bar on the inside. I dropped this into its keeper so that no one could enter the room unexpectedly and take me by surprise. Then I sat down to wait.