Going to the window, I searched the sky; but I could see nothing of our craft.

Nevertheless, I sought to concentrate my thoughts upon the metallic brain wherever it might be. I directed it to drop down and approach the window of the tower where I stood. Never before in my life, I think, had I so concentrated my mind upon a single idea. There seemed to be a reaction that I could feel almost as definitely as when I tensed a muscle. Beads of cold sweat stood our upon my forehead.

Behind me the room was as silent as the grave; and through the open window where I stood, no sound came from the sleeping castle below me.

The slow seconds passed, dragging into a seeming eternity of time. Could it be that the brain had passed beyond the sphere of my control? Was the ship lost to me forever? These thoughts assailed me as my power of concentration weakened. My mind was swept into a mad riot of conflicting hopes and doubts, fears and sudden swift assurances of success that faded into despond as rapidly as they had grown out of nothing.

And then, across the sky I saw a great black hulk moving slowly toward me out of the night.

For just an instant the reaction left me weak; but I soon regained control of myself and pulled aside the three bars that we had cut.

The others, who had evidently been watching the window from where they either sat or stood, now pressed forward. I could hear smothered exclamations of surprise, relief, elation. Turning quickly, I cautioned them to silence.

I directed the brain to bring the ship close to the window; then I turned again to my companions.

"There are two Tarid warriors aboard her," I said. "If they found the water and food which she carried, they are still alive; and there is no reason to believe that starving men would not find it. We must therefore prepare ourselves for a fight. Each of these men, no doubt, is armed with a long sword and a dagger. We are unarmed. We shall have to overcome them with our bare hands."

I turned to Ur Jan. "When the door is opened, two of us must leap into the cabin simultaneously on the chance that we may take them by surprise. Will you go first with me, Ur Jan?"

He nodded and a crooked smile twisted his lips. "Yes," he said, "and it will be a strange sight to see Ur Jan and John Carter fighting side by side."

"At least we should put up a good fight," I said.

"It is too bad," he sighed, "that those two Tarids will never have the honor of knowing who killed them."

"Jat Or, you and Gar Nal follow immediately behind Ur Jan and me." And then, in his own language, I told Umka to board the ship immediately after Jat Or and Gar Nal. "And if the fighting is not all over," I told him, "you will know what to do when you see the two Tarid warriors." His upper mouth stretched in one of his strange grins, and he purred contentedly.