Thus assured that there was no one in the courtyard, I took the ship across the wall and dropped it to the ground beside Gar Nal's.

Quickly I gave my instructions for what was to follow. "Gar Nal," I said, "you will go aboard your ship and pilot it, following me. We are going to the window of the room where the girls are confined. As I draw in and stop at their window, both the doors in the sides of my ship will be open. Open the door on the port side of your ship and place it alongside mine, so that if it is necessary you can cross through my ship and enter the room where the women are confined. We may need all the help that we have, if the women are well guarded."

Chapter 21 IN THE TOWER OF DIAMONDS

Vague misgivings disturbed me as I saw Gar Nal enter his ship. They seemed a premonition of disaster, of tragedy; but I realized that they were based upon nothing more substantial than my natural dislike for the man, and so I sought to thrust them aside and devote my thoughts to the business in hand.

The night was dark. Neither Mars nor Cluros had risen. It was, indeed, because of the fact that I knew neither of them would be in the sky that I had chosen this hour for my attempt to rescue Dejah Thoris and her companion.

Presently I heard the motors of Gar Nal's ship, which we had decided should be the signal that he was ready to start. Leaving the ground, I rose from the courtyard, crossed the wall and set a course away from the city. This I held until I felt that we were out of sight of any possible watcher who might have discovered us. Trailing us was the dark hulk of Gar Nal's ship.

In a wide spiral, I rose and circled back to the opposite side of the castle; and then, approaching it more closely, I picked out the lofty Tower of Diamonds.

Somewhere in that gleaming shaft were Dejah Thoris and Zanda; and if Ozara had not betrayed me and if no accident had befallen her plan, the Jeddara of the Tarids was with them.

There had been moments when I had been somewhat concerned as to the honesty and loyalty of Ozara. If she had spoken the truth, then there was every reason why she should wish to escape from the clutches of Ul Vas. However, she might not be so enthusiastic about the escape of Dejah Thoris and Zanda.

I confess that I do not understand women. Some of the things that they do, their mental processes, are often inexplicable to me. Yes, I am a fool with women; yet I was not so stupid that I did not sense something in Ozara's manner toward me, something in the very fact that she had sent for me, that indicated an interest on the part of the Jeddara of the Tarids that might prove inimical to the interests of the Princess of Helium.