It took me but a moment to find the flier I had selected for the adventure when I had been there before, and but another moment to climb to its controls and start the smooth, silent motor.

The night was dark; neither moon was in the sky, and for that I was thankful. I rose in a steep spiral until I was high above the city; then I headed for the tower of Nastor's palace where Llana of Gathol was imprisoned.

The black hull of the flier rendered me invisible, I was sure, from the avenues below on a dark night such as this; and I came to the tower with every assurance that my whole plan had worked out with amazing success, even in spite of the untoward incidents that had seemed about to wreck it in its initial stages.

As I drew slowly closer to the windows of Llana's apartment, I heard a woman's muffled scream and a man's voice raised in anger. A moment later the prow of my ship touched the wall just below the window; and, seizing the bow line, I leaped across the sill into the chamber, Myr-lo's sword in my hand.

Across the room, a man was forcing Llana of Gathol back upon a couch. She was striking at him, and he was cursing her.

"Enough!" I cried, and the man dropped Llana and turned toward me. It was Nastor, the dator.

"Who are you?" he demanded. "What are you doing here?"

"I am John Carter, Prince of Helium," I replied; "and I am here to kill you."

He had already drawn, and our swords crossed even as I spoke.

"Perhaps you will recall me better as Dotar Sojat, the slave who cost you one hundred thousand tanpi," I said; "the prince who is going to cost you your life."

He commenced to shout for the guard, and I heard the sound of running footsteps which seemed to be coming up a ramp outside the door. I saw that I must finish Nastor quickly; but he proved a better swordsman than I had expected, although the encounter quickly developed into a foot race about the chamber.

The guard was coming closer when Llana darted to the door and pushed a heavy bolt into place; and not a moment too soon, for almost immediately I heard pounding on the door and the shouts of the warriors outside; and then I tripped upon a fur that had fallen from the couch during the struggle between Llana and Nastor, and I went down upon my back. Instantly Nastor leaped for me to run me through the heart. My sword was pointed up toward him, but he had all the advantage. I was about to die.

Only Llana's quick wit saved me. She leaped for Nastor from the rear and seized him about the ankles. He pitched forward on top of me, and my sword went through his heart, two feet of the blade protruding from his back. It took all my strength to wrest it free.

"Come, Llana!" I said.

"Where to?" she asked. "The corridor is full of warriors."

"The window," I said. "Come!"

As I turned toward the window, I saw the end of my line, that I had dropped during the fight, disappear over the edge of the sill. My ship had drifted away, and we were trapped.

I ran to the window. Twenty-five feet away, and a few feet below the level of the sill, floated escape and freedom, floated life for Llana of Gathol, for Pan Dan Chee, for Jad-han, and for me.

There was but a single hope. I stepped to the sill, measured the distance again with my eyes-and jumped. That I am narrating this adventure must assure you that I landed on the deck of that flier. A moment later it was beside the sill again, and Llana was aboard.

"Pan Dan Chee!" she said. "What has become of him? It seems cruel to abandon him to his fate."

Pan Dan Chee would have been the happiest man in the world could he have known that her first thought was for him, but I knew that the chances were that she would snub or insult him the first opportunity she had-women are peculiar that way.

I dropped swiftly toward the plaza. "Where are you going?" demanded Llana.

"Aren't you afraid we'll be captured down there?"

"I am going for Pan Dan Chee," I said, and a moment later I landed close to Nastor's palace, and two men dashed from the shadows toward the ship. They were Pan Dan Chee and Jad-han.

As soon as they were aboard, I rose swiftly; and headed for Gathol. I could feel Pan Dan Chee looking at me. Finally he could contain himself no longer. "Who are you?" he demanded; "and where is John Carter?"

"I am now Myr-lo, the inventor," I said; "a short time ago I was Dotar Sojat the slave; but always I am John Carter."

"We are all together again," he said, "and alive; but for how long? Have you forgotten the skeletons on the rim of the rift?"

"You need not worry," I assured him. "The mechanism that laid them there has been destroyed."

He turned to Llana. "Llana of Gathol," he said, "we have been through much together; and there is no telling what the future holds for us. Once again I lay my heart at your feet."

"You may pick it up," said Llana of Gathol; "I am tired and wish to sleep."

There were four of us aboard the flier I had stolen from the hangar at Kamtol to effect our escape from The Valley of the First Born: Llana of Gathol; Pan Dan Chee of Horz; Jad-han, the brother of Janai of Amhor; and I, John Carter, Prince of Helium and Warlord of Barsoom.

It was one of those startlingly gorgeous Martian nights that fairly take one's breath away. In the thin air of the dying planet, every star stands out in scintillant magnificence against the velvet blackness of the firmament in splendor inconceivable to an inhabitant of Earth.

As we rose above the great rift valley, both of Mars' moons were visible, and Earth and Venus were in conjunction, affording us a spectacle of incomparable beauty. Cluros, the farther moon, moved in stately dignity across the vault of heaven but fourteen thousand miles away, while Thuria, but four thousand miles distant, hurtled through the night from horizon to horizon in less than four hours, casting ever changing shadows on the ground below us which produced the illusion of constant movement, as though the surface of Mars was covered by countless myriads of creeping, crawling things. I wish that I might convey to you some conception of the weird and startling strangeness of the scene and of its beauty; but, unfortunately, my powers of description are wholly inadequate.

But perhaps some day you, too, will visit Mars.

As we rose above the rim of the mighty escarpment which bounds the valley, I set our course for Gathol and opened the throttle wide, for I anticipated possible pursuit; but, knowing the possibilities for speed of this type of flier, I was confident that, with the start we had, nothing in Kamtol could overhaul us if we had no bad luck.

Gathol is supposed by many to be the oldest inhabited city on Mars, and is one of the few that has retained its freedom; and that despite the fact that its ancient diamond mines are the richest known and, unlike practically all the other diamond fields, are today apparently as inexhaustible as ever.

In ancient times the city was built upon an island in Throxeus, mightiest of the five oceans of old Barsoom. As the ocean receded, Gathol crept down the sides of the mountain, the summit of which was the island on which she had been built, until today she covers the slopes from summit to base, while the bowels of the great hill are honeycombed with the galleries of her mines.

Entirely surrounding Gathol is a great salt marsh, which protects it from invasion by land, while the rugged and ofttimes vertical topography of the mountain renders the landing of hostile airships a precarious undertaking.

Gahan, the father of Llana, is jed of Gathol, which is very much more than just a single city, comprising, as it does, some one hundred forty thousand square miles, much of which is fine grazing land where run their great herds of thoats and zitidars. It was to return Llana to her father and mother, Tara of Helium, that we had passed through so many harrowing adventures since we had left Horz.