A
lone in the prison room, after Dex had been dragged away to be subjected to the Rogan inquisition, Brand gnawed at his fingers and paced distractedly up and down the stone flooring. For a while he had no coherent thought at all; only the realization that his turn came next, and that the Rogans would leave no refinement of torment untried in their effort to wring from him the secret of the atomic engine.
He went to the window, and absent-mindedly stared out. The whining hum from the great domed building off to the right, like the high-pitched droning of a swarm of gargantuan bees, came to his ears. He listened more intently, and leaned out of the window to look at the building.
Under that dome, it came to him again, was, in all probability, the mainspring of the Rogan mechanical power. If only he could get in there and look around! He might do some important damage; he might be able to harass the enemy materially before the time came for him to die.
He leaned farther out of the window, and examined the hundred feet or so of sheer wall beneath him. He saw, scrutinizing it intently, that the stone blocks that composed it were not smooth cut, but rough hewn, with the marks of the cutters' chisels plainly in evidence. Also there was a considerable ridge between each layer of blocks where the Rogans' mortar had squeezed out in the process of laying the wall.
Never in sanity would a man have thought of the thing Brand considered then. To attempt to clamber down that blank wall, with only the slight roughness of the protruding layers of mortar to hang on to, was palpable suicide!
B
rand shrugged. He observed that to a man already condemned to death, the facing of probable suicide shouldn't mean much.
With scarcely an increase in the beating of his heart, he swung one leg out over the broad sill. If he fell, he escaped an infinitely worse death; if he didn't fall, he might somehow win his way into that domed building whence the hum came.
Cautiously, clutching at the rough stone with finger tips that in a moment or two became raw and bleeding masses, he began his slow descent. As he worked his way down, he slanted to the right, toward the near wall of the retaining yard whose end was formed by the round structure that was his goal.
Beneath him and to the left the broad street swarmed with figures: the tall ones of the Rogans and the shorter, sturdier ones of slaves. Any one of those dozens of grotesque pedestrians might glance up, see him, and pick him off with the deadly tubes. Under his fingers the mortar crumbled and left him hanging, more than once, by one hand. For fully five minutes his life hung by a thread apt to be severed at any time. But—he made it. Helped by the decreased gravity of the red spot, and released from inhibiting fear by the fact that he was already, figuratively, a dead man, he performed the incredible.
With a last slithering step downward, he landed lightly on the near wall of the enclosure, and started along its broad top toward his objective.
Now he was in plain sight of any one who might be looking out the windows of the tower building or from the dome ahead of him; but this was a chance he had to take, and at least he was concealed from the swarms in the street. Making no effort to hide himself by crawling along the top of the wall, he straightened up and began to run toward the giant dome.
H
ardly had he gone a dozen steps when he suddenly understood the meaning of the high-walled enclosure to his right!
Off in a far corner rose a slate colored mound that at first glance he had taken for a great heap of inanimate dirt. The mound began to move toward him—and metamorphosed into an animal, a thing that made Brand blink his eyes to see if he were dreaming, and then stop, appalled, to look at it.
He saw a body that dwarfed the high retaining walls to comparative insignificance. It had a tree-like tail that dragged behind it; and a thirty-foot, serpentine neck at the end of which was a head like a sugar barrel that split into cavernous jaws lined with backward-pointing teeth. Two eyes were set wide apart in the enormous head, eyes that were dead and cold and dull, yet glinting with senseless ferocity. It was the sort of thing one sees in delirium.
With increasing energy the creature made for him, till finally it was approaching his sector of the wall at a lumbering run that was rapid for all its ungainliness.
It was apparent at a glance that the snaky neck, perched atop the lofty shoulder structure, would raise the head with its gaping jaws to his level on the wall! Brand ran. And after him thudded the gigantic lizard, its neck arching up and along the wall to reach him.
A scant five yards ahead of the snapping jaws, Brand reached his goal, the dome, and clambered over its curved, metal roof away from the monster's maw.
He stopped to pant for breath and wipe the sweat from his streaming face. "Thank God it didn't get me," he breathed, looking back at the bellowing terror that had pursued him. "Wonder why it's there? It's too ferocious to be tamed and used in any way: it must be kept as a threat to hold the slaves in hand. It certainly looks well fed...."
He shuddered; then he began to explore the dome of the building for a means of entrance.
T
here was no opening in the roof. A solid sheet of reddish metal, like a titanic half-eggshell, it glittered under him in an unbroken piece.
He crept down its increasingly precipitous edge till he reached a sort of cornice that formed a jutting circle of stone around it. There he leaned far over and saw, about ten feet below him, a round opening like a big port-hole. From it were streaming waves of warm, foul air, from which he judged it to be a ventilator outlet.
He scrambled over the edge of the cornice, hung at arm's length, and swung himself down into the opening. And there, perched high up under the roof, he looked down at an enigmatic, eery scene.
That the structure was indeed a strange sort of power-house was instantly made evident. But what curious, mysterious, and yet bewilderingly simple machinery it held!
In the center was a titanic coil of reddish metal formed by a single cable nearly a yard through. Around this, at the four corners of the compass, were set coils that were identical in structure but a trifle smaller. From the smaller coils to the larger streamed, unceasingly, blue waves of light like lightning bolts.
Along a large arc of the wall was a stone slab set with an endless array of switches and insulated control-buttons. Gauges and indicators of all kinds, whose purpose could not even be guessed at, were lined above and below, all throbbing rhythmically to the leap of the electric-blue rays between the monster coils.
A
lmost under Brand's perch a great square beam of metal came through the building wall from outside, to be split into multitudinous smaller beams that were hooked up with the bases of the coils. Across from him, disappearing out through the opposite wall, was an identical beam.
"The terminals for the metal plate system that extends over the whole red spot," murmured Brand. "This buildingisimportant. But what can I do to throw sand in the gears before I'm caught and killed...?"
He surveyed the great round room below him more thoroughly. Now he saw, right in the center of the huge control board, a solitary lever, that seemed a sort of parent to all the other levers and switches. It was flanked by a perfect army of gauges and indicators; and was covered by a glass bell which was securely bolted to the rock slab.
"That looks interesting," Brand told himself. "I'd like to see that closer, if I can climb down from here without being observed.... Why"—he broke off—"where is everybody!"
For the first time, in the excitement and concentration of his purpose, the emptiness of the place struck him. There was no sign of light in the great building—no workmen or slaves anywhere. There was just the great coils, with the streamers of blue light bridging them and emitting the high-pitched, monotonous hum audible outside the dome, and the complicated control board with its quivering indicator needles and mysterious levers. That was all.
"Must be out to lunch," muttered Brand, his eyes going fascinatedly toward that solitary, parent lever under its glass bell. "Well, it gives me a chance to try some experiments, anyway."
I
t was about fifty feet from his perch to the floor; but a few feet to one side was a metal beam that extended up to help support the trussed weight of the roof. He jumped for this, and quickly slid down it.
He started on a run for the control board; but almost immediately he stopped warily to listen: it seemed to him that he had caught, faintly, the squeaking, high tones of Rogan conversation.
Miraculously, the sound seemed to come from a blank wall to his left. He crept forward to investigate....
The mystery was solved before he had gone very far. There was an opening in the wall leading off to an annex of some kind outside the dome building. The opening was concealed by a set-back, so that at first glance it had seemed part of the wall itself. From this opening drifted the chatter of Rogans.
Brand stole closer, finally venturing to peer into the room beyond from an angle where he himself could not be seen. And he found that his whimsical reference to "lunch" had contained a ghastly element of fact!
In that annex were several dozen of the teetering, attenuated Rogans, and an equal number of slaves. And the relation of the slaves and the Rogans was one that made Brand's skin crawl.
Each Rogan had stripped the tunic from the chest of his slave. Now, as Brand watched, each drew a keen blade from his belt, and made a shallow gash in the shrinking flesh. There were a few stifled screams—some of the slaves were women—but for the most part the slashing was endured in stoical silence. When red drops began to ooze forth, the Rogans stooped and applied their horrible little mouths to the incisions....
"The slimy devils!" Brand whispered hoarsely, at sight of that dreadful feeding. "The inhuman, monstrous vermin!"
But now one or two of the Rogans had begun to utter squeaks of satiation; and Brand hastened away from there and toward the control board again. He hadn't an idea of what he might accomplish when he reached it; he didn't know but that a touch of the significant looking parent-lever might blast him to bits; but he did know that he was going to raise absolute hell with something, somewhere, if he possibly could.
S
wiftly he approached the great master-lever, protected by its bell of glass. (At least it looked like glass, for it was crystal clear and reflected gleamingly the blue light from the nearby coils). He tapped it experimentally with his knuckles....
At once pandemonium reigned in the great vaulted building. There was a siren-like screaming from a device he noticed for the first time attached under the domed roof. A clanging alarm split the air from half a dozen gongs set around the upper walls.
Squealing shouts sounded behind Brand. He whirled, and saw the Rogans, interrupted in their terrible meal, pouring in from the annex and racing toward him. Rage and fear distorted their hideous faces as they pointed first to the big lever and then at the escaped Earthman. They redoubled their efforts to get at him, their long unsteady legs covering the distance in great bounds.
Brand swore. Was he to be caught again before he had accomplished a certain thing? When he had already managed to win clear to his objective?
He hammered at the glass bell with his fists, but realized with the first blow that he was only wasting time trying to crack it bare-handed. He glanced quickly about and saw a metal bar propped up against the control board near him.
H
e sprang for it, grasped it as a club, and returned to the glass bell. Raising his arms high, he brought the thick metal bar down on the glass with all his strength.
With a force that almost wrenched his arms from their sockets, the bar rebounded from the glass bell, leaving it uncracked.
"Unbreakable!" groaned Brand.
Desperately he tried again, whirling the bar high over his head and bringing it smashing down. The result was the same as before as far as breaking the bell was concerned. But—a little trickle of crushed rock came from around the bolts in the slab to which the bell was fastened.
A third time be brought the bar down. The glass bell sagged a bit sway from the slab....
He had no chance for more assaults on it. The nearest Rogans had leaped for him. Slimy arms were coiling around him, while the loathsome sucker-disks tore at his unprotected face and throat.
Savagely Brand lashed out with the bar. It caved in a pair of the long, skinny legs, bringing a bloated round head down within reach. He smashed it with the bar, exulting grimly as the blow crumpled bone and flesh almost down to the little mouth which was yet carmine from its recent feeding.
The process seemed a sound one to Brand, unable as he was to reach the Rogans' heads that towered six feet above his own. Methodically, swinging the bar with the weight of his body behind it, he repeated the example. First a crash of the bar against a pair of legs, then the crushing in of the Rogan's head when he toppled with agonized squeals to the floor.
Again and again he crushed the life out of a Rogan with his one-two swing of the deadly bar. They were thinning down, now. They were wavering in their charges against the comparatively insignificant being from another planet who was defending himself so fiercely.
F
inally one of their number turned and ran toward an exit, waving his four arms and adding his high-pitched alarms to the incessant ringing of the gongs and shrieks of the warning siren up under the roof. The rest rushed the Earthman in a body.
Steadily, almost joyfully, Brand fought on. He had expected to be annihilated by one of the Rogan shock-tubes long before now; but as yet there was no sign of any. Either these Rogan workmen were not privileged to carry the terrible things, or they were too occupied to think of going and getting them; anyhow, Brand was left free to wield his bar and continue crushing out the lives of the two-legged vermin that attacked him.
With almost a shock of surprise, he saw finally that he had battered their number down to three. At that he took the offensive himself. He rammed the bluntly pointed end of the bar almost through one writhing torso, broke the back of a second with a whistling blow, and tripped and exterminated the third almost in as many seconds. The creatures, without their death-tubes, were as helpless as crippled rats!
Panting, he turned again toward the loosened glass bell, and battered at it with the precious bar. Gradually the bolts that held it to the stone slab were wrenched out, till only one supported it. But at this point, from half a dozen set-back doorways, streams of infuriated Rogans began pouring into the building and toward him.
The one that had fled had come back with help.
L
ike living spokes of a half-wheel, with the Earthman as the hub, the Rogans converged toward Brand, a howling roar outside indicating that there were hundreds more waiting to jam into the dome as soon as they were able. There were still no shock-tubes in evidence: evidently the worker who had gone for help had gathered the first Rogan citizens he had encountered on the streets. But the very numbers of the mob spelled defeat for Brand.
However, there was still the great lever behind him to yank away from its switch-socket. The glass bell was almost off now. With a last mad blow, he knocked loose the remaining bolt that held it. The bell clattered to the floor.
A concerted shriek came from the crowding Rogans as they saw the Earthman's hand close on the lever. Whatever effect the throwing of that master-switch could have, there was no doubt that they were extremely anxious to prevent it!
And now, in the rear of the crowding columns, appeared Rogans taller than the others, with an authoritative air, who waved before them, eager to unleash their power, batteries of the death-tubes.
Resigning himself to annihilation in the next instant, Brand pulled down hard on the lever.
T
he effect wrought by the throwing of that great switch was almost indescribable.
In a flash, as though all had been struck at once by a giant's hand, every Rogan in the mob shot toward the floor, long thin legs caving under him as if turned to water. Writhing feebly, they endeavored to get up, but could not; and, still weakly ferocious, began to creep toward the Earthman like huge-headed worms.
Brand himself had been thrown to the floor with the falling of that switch. He had felt as though an invisible ocean had been poured on him, weighting him down intolerably. To move arms or legs required enormous effort; and to get up on his feet again was like rising under a two-hundred-pound pack.
The movement of the switch, he saw, had cut off the gravity reducing apparatus of the Rogans—whatever that might consist of. They were now, abruptly, subjected to the full force of gravity exerted by Jupiter's great mass. They could no more stand erect on their tottering, lofty legs than they could fly.
But, though greatly handicapped by the gravity pull, they were still not entirely helpless. Like huge, long insects they continued to worm their way toward Brand, using their four arms and their boneless legs to help urge them over the flooring. And in their rear the Rogan guards struggled to lift their tubes and level them at the escaped prisoner.
Prompt to avoid that, Brand went down on his hands and knees. Thus he was shielded by the foremost crawling Rogans: the ones in the rear, with the tubes, could not raise themselves high enough to bore down over their fellows' heads at the Earthman.
Squatting on his knees, Brand awaited the first resolute crawlers. And, on his knees, whirling the now thrice weighty bar at heads that were conveniently low enough to be accessible, he began his last stand.
O
n the Rogans came, evidently determined, at any sacrifice of life, to get the Earthman away from that vital control board. And to right and left, crouching low to escape the tubes of the guards slowly crawling forward from the rear, Brand laid about him with the bar.
He got a little sick at the havoc he was wreaking on these slow-moving, gravity-crippled things: but remembrance of their grisly feeding habits, and the torture they must by now have inflicted on Dex, kept him flailing down on soft heads with undiminished effort.
With the gravity pull what it was, the Earthman was immeasurably stronger than any individual Rogan. For a time the contest was all in his favor. It was like killing slugs in a rose garden!
Nevertheless, these slugs were, after all, twelve feet long and possessed of intelligence, besides being hundreds in number. After a while the tide of battle began to turn in their favor.
Brand began to feel his arms ache burningly with the sustained effort of wielding a weapon that now weighed about twenty-five pounds. He knew he couldn't keep up the terrific strain much longer. And, in addition, he could see that the armed Rogans in the rear were steadily forging ahead among the unarmed attackers, till they soon must be in a position to blast him with their weapons.
Brand brought down his bar, with failing force but still deadly effect, on the loathsome face of the nearest Rogan, grunting with satisfaction as he saw it crumple into a shapeless mass. He thrust it, spear-like, into another face, and another.
Then, abruptly, he found himself weaponless.
Raising it high to bring it down on an attacker who was almost about to seize him, he felt the metal bar turn white hot, and dropped it with a cry as it seared the skin from the palms of his hands. Some Rogan guard in the rear had managed to train his tube on the bar; and in the instant of its rising had almost melted it.
W
eaponless and helpless, Brand crawled slowly back before the tortuously advancing mob, keeping close enough to them to be shielded from the tubes of the rear guards. Without his club he knew the end was a matter of seconds.
He had an impulse to leap full into the mass of repulsive, crawling bodies and die fighting as his fists battered at the gruesome faces. But a second impulse, and a stronger one, was the blind instinct to preserve his life as long as possible.
Hesitantly, almost reluctantly, acting on the primitive instinct of self-preservation, he continued to back away from the advancing horde; away from the switch and toward the rear of the dome.
With the instant of his withdrawal, a Rogan turned toward the lever to push it back up into contact and release the red kingdom from the burden of Jupiter's unendurable gravity. And now ensued a curious struggle. The lever, placed for the convenience of creatures twelve feet or more tall, was about five feet from the floor. And the Rogan couldn't reach it!
S
tubbornly he heaved and writhed in an effort to raise his inordinately heavy body from the floor to a point where one of the weaving arms could reach the switch. But the pipe-stem legs would not bear its weight. Each time it nearly reached the lever, only to fall feebly back again in a snarl of tangled limbs.
Meanwhile, Brand had flashed a quick look back over his shoulder to see, in the wall behind him, a metal door he hadn't noticed before. He found time for a flashing instant to wonder why there were no Rogans entering from that doorway, too; but it was a vain wonder, and it faded from his mind as the ever advancing, groping monsters before him kept crowding him back.
Instinctively he changed his course a trifle, to edge toward the metal door. Perhaps, behind it, there was sanctuary for a few moments. Perhaps he could force it open, spring out, and bar it again in the faces of the pursuing mob. It sounded improbable, but at least it offered him a slim chance where before no chance had seemed possible.
He reached the door at last, fumbled behind him and felt, high over his head, a massive sliding bolt.
I
n the spot Brand had left, the struggle to throw the gravity-lever back into closed contact position went on. The Rogan who was fruitlessly trying to reach up to it paused and said something to one near him. That one halted, and began to crawl toward him.
The two of them tried to reach it, one bracing the other and helping him pry his body up from the implacable pull of Jupiter's uninsulated mass. The top Rogan reached a little higher. The flesh sucker-disk that served as a hand almost grasped the lever, but failed by only a few inches.
A third Rogan crawled up. And now, with two arching their backs to help the other, the thing was done. The hose-like, groping arm went up and pushed the lever back into place.
The blue streamer began to hum and crackle from coil to coil again. The invisible weight that pressed down was released as once more the giant planet's gravity was nullified. The Rogans got eagerly to their feet and began to race toward Brand in their normal long bounds.
Brand, just cautiously rising, when the power went back on, found himself leaping five feet into the air with the excess of his muscular effort. And in that leap he saw the Rogans in the rear straighten up and point their tubes. However, also in that leap, his fumbling hand shot back the bolt that securely shut the metal door.
With a shout of defiance he jumped out of the door and slammed it shut after him, feeling it grow searing hot an instant later under the impact of the rays from the tubes that had been trained on him.
A stinging shock reached him through the metal, flinging him to the ground. He rolled out of its range and leaped to his feet to race away from there. Then, with a gasp, he flattened his body back against the wall of the dome building.
He was in the enclosure that held the gigantic, lizard-like thing that had nearly got him on his escape from the tower room.
He wheeled frantically to go back and face the Rogan death-tubes. Anything rather than wait while that mammoth heap of tiny-brained ferocity ran him down and tore him to shreds! But even as he turned, he heard the bolt shoot home on the inside of the door; heard vengeful squeals of triumph from his pursuers.
A
t the other end of the enclosure, near the foot of the tower building, the great lizard eyed him unblinkingly, its tremendous jaws gaping to reveal a cavernous mouth that was hideously lined with bright orange colored membrane. Then, squatting lower with every step it took, like a mountainous cat about to spring on its prey, it began to stalk on its tree-like legs toward the tiny creature that had leaped into its yard with it.
Brand whirled this way and that, mechanically seeking a way out. There was none. The walls of the great enclosure were not like the wall of the tower. Here were no rough hewn stones, with protruding ridges of mortar set between. These walls were as smooth as glass, and just as smooth was the curved wall of the dome building behind him.
The monstrous beast stalked nearer, almost on its belly now. As it advanced, the great tail stirred up a cloud of reddish dust, and left behind it a round deep depression in a surface already crisscrossed with a multitude of similar depressions. A bellowing hiss came from its gaping mouth, and it increased its pace to a thunderous, waddling rush.
I
n the torture chamber Dex wavered slowly back to consciousness to get the growing impression that he was being immersed in a bath of liquid fire. Burning, intolerable pain assailed him with increasing intensity as his senses clarified.
At last he groaned and opened his eyes, for the moment not knowing where he was nor how he had come to be there. He saw strange torture instruments and tall monstrosities with pumpkin-shaped heads surrounding him closely in a semicircle, and staring at him out of great, dull eyes.
Remembrance came back with a rush, and he gathered his muscles to spring at the hateful figures. But he could not move. At waist and throat, at wrists and ankles, were hoops of metal. He closed his eyes again while the burning waves of invisible fire shot through him recurrently from head to foot.
Dully he wondered that he was still alive. His last recollection had been of the Rogan leader pointing his shock-tube full at him, his shapeless countenance working with murderous fury. However, alive he was; and most unenviably so!
His hands, circumscribed to a few inches of movement by the bonds on his wrists, felt the smooth substance at his back. And with a thrill of horror he realized his position: he was crucified against the metal slab on which the slave had writhed in agony a short half hour ago.
Again he strained and tugged, vainly, to get free. Off to one side, pressed back against a huge glass experimental tank, he saw the beautiful Greca, her eyes wide with horror; and caught her frantic pleading message to her "Great White One."
T
he Rogan leader, squealing and grimacing, advanced toward the victim on the metal plate. One of the long arms went out and a sucker-disk was pressed to Dex's cheek. Dex quivered at the loathsome contact of that soft and slimy substance; then set his jaws to keep from groaning as the disk was jerked away, to carry with it a fragment of skin and flesh.
Gingerly, the tall leader felt the twitching, blackened stump of his blasted arm. Dex grinned mirthlessly at that: he'd struck one or two blows in his own defense, anyhow!
At sight of the Earthman's grin, an expression of defiance and grim joy that needed no interpreting to be understandable, the Rogan leader fairly danced with rage. His long arm went out to the switch beside the plate, and pulled it down another notch—just a little, not nearly to the current that had torn at the slave.
At the increased torment resulting from that slight movement of the regulating lever, Dex yelled aloud in spite of all his will power. It seemed as though his whole body were about to burst into self-generated flame. Every cell and fiber of him seemed on the verge of flying apart. He could feel his eyes start from his head, could feel every hair on his scalp stand up as though discharging electric sparks.
A minute or two of that and he would go mad! He cried out again, and twisted helplessly in his bonds. And then the terrible torture stopped.
The Rogan had not touched the switch—yet whatever sort of current it was that charged the plate was abruptly clicked off, as though someone at a distance had cut a wire or thrown a master-switch.
S
imultaneously with its ceasing, an invisible, crushing sea seemed to envelope everything. Dex felt his body sag against his metal bonds as if it had been changed to lead.
Before him the Rogans, who had been crowding closer to watch gloatingly each grimace he made, shot doorward as though their pipe-stem legs had been swept from under them. The leader fell on the stump of his seared arm and, a deafening squeal of rage and pain came from his little mouth. His tube fell from his grasp and rolled over the floor half a dozen yards away from him.
Amazed, observing the stricken creatures only dimly through a haze of pain, Dex saw them struggle vainly to get up again, and heard them chattering excitedly to themselves. For the moment, in the face of this queer phenomenon, the prisoner seemed to be forgotten. And Dex was quick to seize the momentary advantage.
"Greca!" he called. "The tube! There—on the floor!"
The girl raised her head quickly, and followed his imploring gaze. Laboriously she started for the tube. At the same instant the Rogan leader began to feel around him for his lost weapon. Not finding it, he raised his head and glanced about for it. He saw the girl making her way toward it and, with a squeak of terror, began to crawl toward it himself.
H
e was not quick enough. The girl, though not nearly as active under the increased pull of gravity as a person of Earth might be, was yet more agile than the Rogans. And she was the faster mover in this tortuous, snail-like race. While the Rogan leader was still several feet away, she retrieved the shock-tube.
"Kill him!" begged Dex. "And all the rest of the filthy creatures!"
With feminine horror of the thing that faced her, Greca hesitated an instant—a hesitation almost long enough to be fatal. Then, just as the Rogan leader was reaching savagely out for her, she leveled the tube at him and turned it to its full power.
One last thin squeal came from the Rogan's mouth, a squeal that cracked abruptly at its height. What had been its gangling body drifted up in inky smoke.
"The others!" called Dex. "Quick! Before they get their weapons—"
Greca swept the death-tube in a short arc in front of her, over the bodies of the remaining Rogans, as if spraying plants with a hose. One after another, toppling in swift succession like grotesque falling dominoes, the creatures sagged to the floor and melted away. That one small part of Jupiter's red spot, at least, was cleared of Rogan population.
L
ong shudders racked Greca's body, and her lips were a bloodless line in her pallid face. But she did not go into womanly hysterics or swoon at the slaughter it had been her lot to inflict. Moving as quickly as she could, she went to the metal slab and began, with shaking fingers, to undo the fastenings that held Dex prisoner.
"Good girl," said Dex, patting her satiny bare shoulder as he stood free again. "You're a sport and a gentleman. You don't understand the terms? They're Earth words, Greca, that carry the highest praise a man can give a woman. But let's get out of here before another gang comes and takes us again. Where can we hide?"
"I don't know any hiding places," confessed Greca despairingly. "The Rogans swarm everywhere. We will be seen the moment we try to leave here."
"Well, we'll hunt for a hole, anyway," said Dex. He essayed to walk. What with the tendency of his muscles to jerk and collapse with the aftermath of the torture he had endured, and the sudden and inexplicable increase in gravity that bore him down, he made heavy going of it. "First we'll go up and get Brand."
"Yes, yes," said Greca, a soft glow in her clear blue eyes. "Let us go quickly."
She started toward the door, panting with the effort of moving. But Dex halted an instant, to stoop and pick up another of the tubes.
"We might as well have one of these apiece," he said. "You've proved you have the grit to use one; and maybe the dirty rats will think twice about rushing us if we each have a load of death in our hands."
T
hey made their way out of the torture laboratory, and up the incline to the street level. And it was just as they reached this that the burden of gravity under which they staggered was lifted from their shoulders as quickly as it had descended on them.
Dex raised his arms just in time to fend his body from a collision with the wall in front of him. "Now what!" he exclaimed.
Greca lifted her hand for silence, inclined her head, and listened intently. As she did so, Dex heard the same noise her quick ears had caught an instant before his: a distant pandemonium of ringing gongs and siren shrieks, and squealing cries of a multitude of agitated Rogans.
"What the devil—" began Dex. But again Greca raised her hand to silence him, and listened once more. As she listened, her sea-blue eyes grew wider and wider with horror. Then, frantically, she began to race down a long corridor away from the street door.
Dex hastened to follow her. "What is it?" he demanded, when he had caught up to her flying little feet. "This is not the way up to the room where Brand—"
"Your friend is not there," she interrupted. She explained swiftly, distractedly: "From the shouts of the Rogans I learn that he got into the great dome building, somehow, and then was driven into the pen of the...."
Dex could not get the next term she used. But her telepathic message of the peril she mentioned formed in his mind clearly enough.
He got a flashing brain picture of a great, high-walled yard with a monster in it of the kind he had caught a close-range glimpse a short while before. Also, he saw a blurred, tiny figure, running from wall to wall, that was Greca's imagining of Brand and his efforts to escape the enormous beast.
"Good heavens!" groaned Dex. "Penned in with one of the things they showed me while I was stretched on the rack! Are you sure, Greca?"
She nodded, and tried to run faster. "This way," she gasped, turning down a passage to the left that ended in a massive metal door. "This leads to the enclosure. Oh, if only we can be in time!"
Her slim fingers tore at a massive bolt that secured the door. "Here," said Dex, wrenching it open for her. And they stepped out into thin sunlight, onto a hard surface of reddish ground that was crisscrossed with innumerable rounded furrows like the tracks old-fashioned, fifty-passenger airplane wheels used to make on soft landing fields.
G
reca shrieked, and pointed to the far end of the enclosure. Down there, flattened against the wall of the dome building, was Brand. And waddling toward him with a tread that caused the ground to quiver, was a mate to the hideous creature the Rogans had used to terrify Dex in the torture chamber.
Dex leveled the tube he was carrying, swore, hit it frenziedly against his hand. "How do you work this damned thing, Greca—Oh! Like that! There—see ifthatputs a sting in your hide!"
The distant monster stopped its advance toward Brand. A raw white spot as big as a dinner plate leaped into being on one of its enormous hind legs. It whirled with an ear-splitting hiss, to see what thing was causing such pain in its rear. The frightful head whipped back at the end of the long neck, to nuzzle at the seared spot. Then the giant lizard turned toward Brand again.
A second time Dex pressed the central coil that formed the handle of the tube, as Greca had showed him how to do. A second time the ray shot down the field to flick a chunk of flesh weighing many pounds from the monster's flank. And this time it definitely abandoned the quarry behind it. With a scream like the keening of a dozen steam whistles, it charged back over its tracks toward the distant pigmies that were inflicting such exasperating punishment on it.
Dex swept the tube before him in a short half-circle. A smoking gash appeared suddenly in the vast fore-quarters of the monster. It stopped abruptly, its clawed feet plowing along the ground with the force of its momentum. An instant it stood there. Then, with its head swinging from side to side and lowered so that its looped neck dragged on the reddish, dusty ground, it began to back away from the source of its hurt, bellowing and hissing its rage and bewilderment.
"Brand!" shouted Dex. "This end! Run, while I hold the thing off!"
Brand began to race down the long enclosure, ten feet to a leap. The great lizard darted after him, like a cat after an escaping mouse; but a flick of the tube sent it bellowing and screaming back to its corner.
"Dex!" gasped Brand. "Thank God!"
For a moment he leaned, white and shaken, against the wall. Then Greca caught his hand in both of hers, and Dex put his arm supportingly around his shoulder. They retreated back through the doorway behind them, and slid the bolt across the metal door.
T
hank God you came when you did," repeated Brand. Then, with a moment in which, figuratively, to get his feet back on earth, the wonder of Dex's appearance struck him.
"How did you manage to get away?" he asked. "I was sure—I thought—when they dragged you out of the tower room I wouldn't see you again—"
Rapidly Dex gave an account of his ordeal in the torture chamber, telling Brand in a few words how he had attempted to win free of the Rogans, how he had almost succeeded, only to be caught again and clamped to the death-plate on the wall.
"But just as the big fellow was about to cook me for good and all," he concluded, "something happened to the current, and to the gravity at the same time—"
"That was when I pulled the lever in the dome building!" exclaimed Brand.
He told of what had befallen him in the Rogan power-house. "That lever, Dex!" he said swiftly. "It's the keynote of the whole business. It absolutely controls the pull of gravity, and Lord knows what else besides. If we could only get at it again! Perhaps we could not only shut it off so that Jupiter's pull would function again, but also reverse the process so its gravity would beincreased! Think what that would mean! Every Rogan in the red empire stretched out and immovable, possibly crushed in by his own weight!"
"It's a wonderful thought," sighed Dex; while Greca's eyes glowed with a sudden hope for her enslaved race, "but I don't see how we could ever—"
He stopped; and glanced in alarm down the passage behind them. Greca and Brand, hearing the same soft noise, whirled to look, too.
F
ar down the passage, just sneaking around the bend, was a group of Rogan guards, each armed with a death-tube.
"Back to the pen!" cried Brand.
He slid the bolt, and jerked the door open. They rushed into the walled enclosure again, the slamming of the door behind them cutting off the enraged squeals of the Rogans.
"This isn't going to mean anything but a short delay, I'm afraid," said Brand, clenching his fists in an agony of futility. "They'll be in here in a minute, and get us like trapped rats."
"Not before we get a lot of them," said Dex grimly.
"But that isn't enough, man! We don't want to die, no matter how decently we do it. We've won free, and stayed free this long; now, somehow, we've got to reach our ship and get back to Earth to warn them of the danger that hides here for our planet!"
He strode tensely up and down, smacking his fist into his palm. "The lever!" he exclaimed. "That lever! It's our only answer! If we could get to it.... But how can we? We couldn't break into the dome, now the Rogans are on the watch for us, with anything less than a charge of explosives. Or a tank. God, how I'd like to have an old-fashioned, fifty-ton army tank here now!"
Greca exclaimed aloud as Brand's fleeting mental picture of one of Earth's unwieldy, long-discarded war tanks registered on her brain.
"There is the great beast there," she said hesitantly, pointing a slim forefinger at the huge lizard that had backed into a far corner and was regarding them out of dull, savage eyes. Then she shook her head. "But that is impossible. Impossible!"