"Let loose the death!" he cried, and immediately a dozen doors in the base of the tower swung open, and a dozen grim and terrible banths sprang into the arena.

This was not the first time that I had faced the ferocious Barsoomian lion, but never had I been pitted, single-handed, against a full dozen of them. Even with the assistance of the fierce Woola, there could be but a single outcome to so unequal a struggle.

For a moment the beasts hesitated beneath the brilliant glare of the torches; but presently their eyes, becoming accustomed to the light, fell upon Woola and me, and with bristling manes and deep-throated roars they advanced, lashing their tawny sides with their powerful tails.

In the brief interval of life that was left me I shot a last, parting glance toward my Dejah Thoris. Her beautiful face was set in an expression of horror; and as my eyes met hers she extended both arms toward me as, struggling with the guards who now held her, she endeavored to cast herself from the balcony into the pit beneath, that she might share my death with me. Then, as the banths were about to close upon me, she turned and buried her dear face in her arms.

Suddenly my attention was drawn toward Thuvia of Ptarth. The beautiful girl was leaning far over the edge of the balcony, her eyes bright with excitement.

In another instant the banths would be upon me, but I could not force my gaze from the features of the red girl, for I knew that her expression meant anything but the enjoyment of the grim tragedy that would so soon be enacted below her; there was some deeper, hidden meaning which I sought to solve.

For an instant I thought of relying on my earthly muscles and agility to escape the banths and reach the balcony, which I could easily have done, but I could not bring myself to desert the faithful Woola and leave him to die alone beneath the cruel fangs of the hungry banths; that is not the way upon Barsoom, nor was it ever the way of John Carter.

Then the secret of Thuvia's excitement became apparent as from her lips there issued the purring sound I had heard once before; that time that, within the Golden Cliffs, she called the fierce banths about her and led them as a shepherdess might lead her flock of meek and harmless sheep.

At the first note of that soothing sound the banths halted in their tracks, and every fierce head went high as the beasts sought the origin of the familiar call. Presently they discovered the red girl in the balcony above them, and, turning, roared out their recognition and their greeting.

Guards sprang to drag Thuvia away, but ere they had succeeded she had hurled a volley of commands at the listening brutes, and as one they turned and marched back into their dens.

"You need not fear them now, John Carter!" cried Thuvia, before they could silence her. "Those banths will never harm you now, nor Woola, either."

It was all I cared to know. There was naught to keep me from that balcony now, and with a long, running leap I sprang far aloft until my hands grasped its lowest sill.

In an instant all was wild confusion. Matai Shang shrank back. Thurid sprang forward with drawn sword to cut me down.

Again Dejah Thoris wielded her heavy irons and fought him back. Then Matai Shang grasped her about the waist and dragged her away through a door leading within the tower.

For an instant Thurid hesitated, and then, as though fearing that the Father of Therns would escape him with the Princess of Helium, he, too, dashed from the balcony in their wake.

Phaidor alone retained her presence of mind. Two of the guards she ordered to bear away Thuvia of Ptarth; the others she commanded to remain and prevent me from following. Then she turned toward me.

"John Carter," she cried, "for the last time I offer you the love of Phaidor, daughter of the Holy Hekkador. Accept and your princess shall be returned to the court of her grandfather, and you shall live in peace and happiness. Refuse and the fate that my father has threatened shall fall upon Dejah Thoris.

"You cannot save her now, for by this time they have reached a place where even you may not follow. Refuse and naught can save you; for, though the way to the last stronghold of the Holy Therns was made easy for you, the way hence hath been made impossible. What say you?"

"You knew my answer, Phaidor," I replied, "before ever you spoke. Make way," I cried to the guards, "for John Carter, Prince of Helium, would pass!"

With that I leaped over the low baluster that surrounded the balcony, and with drawn long-sword faced my enemies.

There were three of them; but Phaidor must have guessed what the outcome of the battle would be, for she turned and fled from the balcony the moment she saw that I would have none of her proposition.

The three guardsmen did not wait for my attack. Instead, they rushed me—the three of them simultaneously; and it was that which gave me an advantage, for they fouled one another in the narrow precincts of the balcony, so that the foremost of them stumbled full upon my blade at the first onslaught.

The red stain upon my point roused to its full the old blood-lust of the fighting man that has ever been so strong within my breast, so that my blade flew through the air with a swiftness and deadly accuracy that threw the two remaining therns into wild despair.

When at last the sharp steel found the heart of one of them the other turned to flee, and, guessing that his steps would lead him along the way taken by those I sought, I let him keep ever far enough ahead to think that he was safely escaping my sword.

Through several inner chambers he raced until he came to a spiral runway. Up this he dashed, I in close pursuit. At the upper end we came out into a small chamber, the walls of which were plank except for a single window overlooking the slopes of Otz and the Valley of Lost Souls beyond.

Here the fellow tore frantically at what appeared to be but a piece of the blank wall opposite the single window. In an instant I guessed that it was a secret exit from the room, and so I paused that he might have an opportunity to negotiate it, for I cared nothing to take the life of this poor servitor—all I craved was a clear road in pursuit of Dejah Thoris, my long-lost princess.

But, try as he would, the panel would yield neither to cunning nor force, so that eventually he gave it up and turned to face me.

"Go thy way, Thern," I said to him, pointing toward the entrance to the runway up which we had but just come. "I have no quarrel with you, nor do I crave your life. Go!"

For answer he sprang upon me with his sword, and so suddenly, at that, that I was like to have gone down before his first rush. So there was nothing for it but to give him what he sought, and that as quickly as might be, that I might not be delayed too long in this chamber while Matai Shang and Thurid made way with Dejah Thoris and Thuvia of Ptarth.

The fellow was a clever swordsman—resourceful and extremely tricky. In fact, he seemed never to have heard that there existed such a thing as a code of honor, for he repeatedly outraged a dozen Barsoomian fighting customs that an honorable man would rather die than ignore.

He even went so far as to snatch his holy wig from his head and throw it in my face, so as to blind me for a moment while he thrust at my unprotected breast.

When he thrust, however, I was not there, for I had fought with therns before; and while none had ever resorted to precisely that same expedient, I knew them to be the least honorable and most treacherous fighters upon Mars, and so was ever on the alert for some new and devilish subterfuge when I was engaged with one of their race.

But at length he overdid the thing; for, drawing his shortsword, he hurled it, javelinwise, at my body, at the same instant rushing upon me with his long-sword. A single sweeping circle of my own blade caught the flying weapon and hurled it clattering against the far wall, and then, as I sidestepped my antagonist's impetuous rush, I let him have my point full in the stomach as he hurtled by.

Clear to the hilt my weapon passed through his body, and with a frightful shriek he sank to the floor, dead.

Halting only for the brief instant that was required to wrench my sword from the carcass of my late antagonist, I sprang across the chamber to the blank wall beyond, through which the thern had attempted to pass. Here I sought for the secret of its lock, but all to no avail.

In despair I tried to force the thing, but the cold, unyielding stone might well have laughed at my futile, puny endeavors. In fact, I could have sworn that I caught the faint suggestion of taunting laughter from beyond the baffling panel.

In disgust I desisted from my useless efforts and stepped to the chamber's single window.

The slopes of Otz and the distant Valley of Lost Souls held nothing to compel my interest then; but, towering far above me, the tower's carved wall riveted my keenest attention.

Somewhere within that massive pile was Dejah Thoris. Above me I could see windows. There, possibly, lay the only way by which I could reach her. The risk was great, but not too great when the fate of a world's most wondrous woman was at stake.

I glanced below. A hundred feet beneath lay jagged granite boulders at the brink of a frightful chasm upon which the tower abutted; and if not upon the boulders, then at the chasm's bottom, lay death, should a foot slip but once, or clutching fingers loose their hold for the fraction of an instant.

But there was no other way and with a shrug, which I must admit was half shudder, I stepped to the window's outer sill and began my perilous ascent.

To my dismay I found that, unlike the ornamentation upon most Heliumetic structures, the edges of the carvings were quite generally rounded, so that at best my every hold was most precarious.

Fifty feet above me commenced a series of projecting cylindrical stones some six inches in diameter. These apparently circled the tower at six-foot intervals, in bands six feet apart; and as each stone cylinder protruded some four or five inches beyond the surface of the other ornamentation, they presented a comparatively easy mode of ascent could I but reach them.

Laboriously I climbed toward them by way of some windows which lay below them, for I hoped that I might find ingress to the tower through one of these, and thence an easier avenue along which to prosecute my search.

At times so slight was my hold upon the rounded surfaces of the carving's edges that a sneeze, a cough, or even a slight gust of wind would have dislodged me and sent me hurtling to the depths below.

But finally I reached a point where my fingers could just clutch the sill of the lowest window, and I was on the point of breathing a sigh of relief when the sound of voices came to me from above through the open window.

"He can never solve the secret of that lock." The voice was Matai Shang's.