Chapter IV: Part 4

So it wasn't too bad, thought Raf. But he didn't like it, even with that mitigating factor. To all purposes the four Terrans were now surrounded by some twenty times their number, in an unknown country, out of all communication with the rest of their kind. It could add up to disaster.

9

SEA GATE

"What is it?" Dalgard asked his question as Sssuri, his attention still on their back trail, stole along cautiously on a retracing of their path.

But that retreat ended abruptly with the merman plastered against the wall, his whole shadowy form a tense warning which stopped Dalgard short. In that moment the answer flashed from mind to mind.

"There are those which follow--"

"Snake-devils? Those Others?" The colony scout supplied the only two explanations he had, sending his own thought out questing. But as usual he could not hope to equal the more sensitive merman whose race had always used that form of communication.

"Those who have long haunted the darkness," was the only reply he could get.

But Sssuri's actions were far more indicative of danger. For the merman turned and caught at Dalgard, pulling the larger colonist along a step or two with the urgency of his grip.

"We cannot return this way--and we must travel fast!"

For Sssuri who would face and had faced up to a snake-devil with a spear his sole weapon, this timidity was new. Dalgard was wise enough to accept his verdict of the wisdom of flight. Together they ran along the underground corridor, soon putting a mile between them and the point where the merman had first taken alarm.

"From what do we flee?" As the merman began to slacken pace, Dalgard sent that query.

"There are those who live in this darkness. By one, or by two, we could speedily remove them from life. But they hunt in packs and they are as greedy for the kill as are the snake-devils scenting meat. Also they are intelligent. Once, long before the days of burning, they served Those Others as hunters of game. And Those Others tried to make them ever more intelligent and crafty so they might be sent to hunt without a huntsman. At last they grew too knowing for their masters. Then Those Others, realizing their menace, tried to kill them all with traps and tricks. But only the most stupid and the slowest were so disposed of. The others withdrew into underground ways such as this, venturing forth only in the dark of night."

"But if they are intelligent," countered the scout, "why can they not be reached by the mind touch?"

"Through the years they have developed their own ways of thought. And these are not the simple creatures of the sun, or such as the runners. Once they were taught to answer only to Those Others. Now they answer only to each other. But"--he spread out his hands in one of his quick, nervous gestures--"to those who are cornered by one of their packs, they are sudden death!"

Since they could not, by Sssuri's reckoning, turn back, there was only one course before them, to follow the passage they had chanced upon. The merman was certain that it underran the river and that eventually they would reach the sea--unless some side turn before that point would make them free in the countryside once more.

Dalgard doubted if it had ever been a well-used way. And the presence of earth falls here and there, over which they stumbled and clawed their way, led him to consider the wisdom of keeping on to what might be a dead end. But his trust in Sssuri's judgment was great, and as the merman plowed forward with every appearance of confidence, he continued to trot along without complaint.

They snatched moments of rest, taking turns at guard. But the walls about them were so unchanging that it was hard to measure time or distance. Dalgard chewed at his emergency rations, a block of dried meat and fruit pounded together to an almost rocklike consistency, and tried to make the crumbs he sucked loose satisfy his growing hunger.

The passageway was growing damper; water trickled down the walls and gathered in fetid pools on the floor. Dalgard's dislike of the place grew. His shoulders hunched involuntarily as he strode along, for his imagination pictured the rock above them giving away to dump tons of the oily river water down to engulf them. But though Sssuri avoided splashing through the pools wherever he might, he did not appear to find anything upsetting about the moisture.

At last the human could stand it no longer. "How much farther to the sea?" he asked without any hope of a real answer.

As he had expected him to do, Sssuri shrugged. "We should be close. But having never trod this way before, how can I tell you?"

Once more they rested, choosing a stretch which was reasonably dry, munching their dried food and drinking sparingly from the stoppered duocorn horns which swung from their belts. A man would have to be dying of thirst, Dalgard thought, before he would palm up any of the stagnant water from the passage pools.

He drifted off into a troubled sleep in which he fled beneath a sky which was a giant lid in the hand of an unseen enemy, a lid which was slowly lowered to crush him flat. He awoke with a start to find Sssuri's cool, scaled fingers stroking his shoulder.

"Dream demons walk these roads." The words drifted into his half-awake mind.

"They do indeed," he roused to answer.

"It is always so where Those Others have been. They leave behind them the thoughts which breed such dreams to trouble the sleep of those who are not of their kind. Let us go. I would like to be out of this place under the clean sky, where no ancient wickedness hangs to poison the air and thought."

Either the merman had miscalculated the direction of their route or the river mouth was much farther from the inland city than they had believed, for, though they pushed on for what seemed like weary hours, they came to no upward slope, no exit to the world they knew.

Instead Dalgard began to realize that just the opposite was true. At last he could stand it no longer and broke out with what he feared, hoping that Sssuri would deny that fear.

"We are going downhill!"

To his disappointment the merman agreed. "It has been so for the last thousand of our paces. It is my belief that this leads not to the sun but out under the sea."

Dalgard missed a step. To Sssuri the sea was home and perhaps the thought of being under its floor was not disturbing. The land-born human was not so prepared. If he had experienced discomfort under the river, what would it be like under the ocean? His terrifying dream of a lid being pressed down upon him flashed back into his mind. But his companion was continuing:

"There will be doors, perhaps into the sea itself."

"For you," Dalgard pointed out, "but I am no dweller in the depths."

"Neither were Those Others, yet they used these ways. And I tell you"--in his earnestness the merman laid his hand once more on Dalgard's arm--"to turn back now is out of the question. The death which haunts the darkness is still sniffing out our trail."

Dalgard glanced involuntarily over his shoulder. By the faint and limited light of the purple disks he could see little or nothing. An army might creep there undetected.

"But--" His protest was in answer to the merman's seeming unconcern.

Sssuri at the first intimation that the hunters were behind them had shown wariness. Now he did not appear to care.

"They had fed," he replied. "Scouts follow because we are something new and thus suspect. When hunger rises once more in them, and their scouts report that we are meat, then is the time to draw knives and prepare for battle. But before that hour we may have won free. Let us search for the gate we now need."

However confident the merman might be, Dalgard could not match that confidence. In the open air he would have faced a snake-devil four times his size without any more emotion than a hunter's instinctive caution. But here in the dark, unable to rid himself of the belief that thousands of tons of sea water hung over his head, he found himself starting at any sound, his knife bare and ready in his sweating hand.

He noted that Sssuri had stepped up the pace, passing into his sure-footed glide which made Dalgard exert himself to keep up. Before them the corridor stretched without a break. The merman's promised exit, if it existed, was still out of sight.

It was difficult to gauge time in this dark hall, but Dalgard thought that they were at least an hour farther on their way when Sssuri paused abruptly once more, his head cocked in a listening attitude, as if he caught some whisper of sound too rarefied for his human companion.

"Now--" the thought hissed as if he spat the words, "they hunger--and they hunt!"

He bounded forward with a spurt, which Dalgard copied, and they ran lightly, the dust undisturbed in years puffing up beneath the merman's bare, scaled feet and Dalgard's hide boots. Still the unbroken walls, the feeble patches of violet in the ceiling. But no exit. And what good would any exit do him, Dalgard thought, if it opened under the sea?

"There are islands off the coast--many islands--" Sssuri caught him up. "It is in my mind that we shall find our door on one of those. But--run now, knife brother, for those at our heels awake and thirst for flesh and blood. They have decided that we are not to be feared but may be run down for their pleasure."

Dalgard weighed his knife in his hand. "They shall find us with fangs," he promised grimly.

"It will be better if they do not find us at all," returned Sssuri.

A burning arch of pain encased Dalgard's lower ribs, and his breath came in gusts of hastily sucked air as their flight kept on, down the endless corridor. Sssuri was also showing signs of the grueling pace, his round head bent forward, his furred legs pumping as if only his iron will kept them moving. And the determination which kept him going was communicated to the scout as a graver warning than any thought message of fear.

They were passing under one of the infrequent violet lights when Dalgard got something else--a mental thrust so quick and sharp it was as if a sword had cut through the daze of fatigue to reach his brain. Yet that had not come from Sssuri, for it was totally alien, wavering on a band so near the extreme edge of his consciousness that it pricked, receded, and pricked again as a needle might.

This was no message of fear or warning, but of implacable stubbornness and ravening hunger. And in that instant Dalgard knew that it came from what was sniffing out their trail, and he no longer wondered that the hunters were immune to other mental contact. One could not reason with--that!

He spurted forward, matching the merman's acceleration of speed. But to Dalgard's horror he saw that his companion now ran with one hand brushing along the wall, as if he needed that support.

"Sssuri!"

His thought met a wall of concentration through which he could not break. In a way he was reassured--for a moment, until another of those stabs from their pursuers struck him. He longed to look back, to see what hunted them. But he dared not break stride to do that.

"Ahhhh!" The welcoming cry from Sssuri brought his attention back to his companion as the merman broke into a wild run.

Dalgard summoned up his last rags of energy and coursed after him. Sssuri had halted before a dark lump which protruded from the side of the corridor.

"A sea lock!" Sssuri's claws were clicking over the surface of the hatch, seeking the secret of its latch.

Panting, Dalgard leaned against the opposite wall. Just as a protest formed in his mind he heard something else, the pad of feet, many feet, echoing down the corridor. And somehow he was able now to look.

Round spots of light, dull, greenish, close to the ground, as if someone had flung a handful of phosphorescence into the dark. But this was no phosphorescence! Eyes! Eyes--he tried to count and knew it was impossible to so reckon the number of the pack that ran mute but ready. Nor could he distinguish more than a very shadowy glimpse of forms which glided close to the ground with an unpleasant sinuosity.

"Ahhhhh!" Again Sssuri's paean of triumph.

There was the grate of unwilling metal forced to move, a puff of air redolent with the sea striking their bodies in chill threat, the brightness of violet light stepped up to a point far beyond the lamps in the corridor.

With it came no rush of drowning water as Dalgard had half expected, and when the merman clambered through the hatch he prepared to follow, well aware that the eyes, and the pattering feet which bore them, were now almost within range.

There was a snarl from the passage, and a black thing sprang at the scout. Without clear sight of what he was fighting, he struck down with his knife and felt it slit flesh. The snarl was a scream of rage as the creature twisted in midair for a second try at him. In that instant Sssuri, leaning halfway out of the hatch, struck in his turn, thrusting his bone knife into shadows which now boiled with life.

Dalgard leaped for the lock door, kicking out swiftly and feeling the toe of his boot contact with a crunch against one of those darting shades, sending it back end over end into the press where its fellows turned snapping upon it. Then Sssuri grabbed at him, bringing him in, and together they slammed the hatch, feeling it shake with the shock of thudding bodies as the pack outside went mad in their frustration.

While the merman fastened the locking bar, bringing out of the long-motionless metal another protesting screech, Dalgard had a chance to look about him. They were in a room some eight or nine feet long, the violet light showing up well tangles of equipment hanging from pegs on the walls, a pile of small cylinders on the floor. At the far end of the chamber was another hatch door, locked with the same type of bar as Sssuri had just lowered to seal the inner one. The merman nodded to it.

"The sea--"

Dalgard slid his knife back into its sheath. So the sea lay beyond. He did not welcome the thought of passing through that door. Like all of his race he could swim--perhaps his feats in the water would have astonished the men of the planet from which his tribe had emigrated. But unlike the mermen, he was not sea-born, nor equipped by nature with a secondary breathing apparatus to make him as free in the world of water as he was on land. Sssuri might crawl through that hatch without fear. For Dalgard it was as big a test as to turn and face what now raged in the corridor on the inner side.

"There is no hope that they will go now," Sssuri answered his vague question. "They are stubborn. And hours--or even days--will mean nothing. Also they can leave a guard there and rove at will, to return upon signal. That is their way."

This left only the sea door. Sssuri padded across the chamber and reached up to free one of the strange objects dangling from the wall pegs. Like all things made of the marvelous substance used by Those Others for any article which might be exposed to the elements, it seemed as perfect as on the day it had first been hung there, though that date might be a hundred or more Astran years earlier. The merman uncoiled a length of thin, flexible piping which joined a two-foot canister with a flat piece of metallic fabric.

"Those Others could not breathe under the water, as you cannot," he explained as he worked deftly and swiftly. "Within my own memory we have trapped their scouts wearing aids such as these so that they might spy upon our safe places. But their last foray was some years ago and at that time we taught them such a lesson that they have not dared to return. Since they are not unlike you in body and since you breathe the same air aboveground, there is no reason why this should not take you out of here."

Dalgard accepted the apparatus. A couple of elastic metal bands fastened the canister to the chest of the wearer. The fabric molded into a perfect, tight face mask as it touched the skin.

Sssuri went to the pile of cylinders. Choosing one he tinkered with its pointed cone, to be rewarded with a thin hiss.

"Ahhhh--" again his recognition of the rightness of things. "These still contain air." He tested two more and then brought all three back to where Dalgard stood, the canister strapped into place, the mask ready in his hand. With infinite care the merman fitted two of the cylinders into the canister and then was forced to set the other aside.

"We could not change them while under water anyway," he explained. "So it will do little good to take extra supplies with us."

Trying not to speculate on the amount of air he could carry in the cylinders, Dalgard fastened on the mask, adjusted the air tube, and sucked. Air flowed--he could breathe! Only--for how long?

Sssuri, seeing that his companion was fully provided for, worked at the bar locking the sea hatch. But in the end it took their combined strength to spring that barrier and win through to a small cubby which was the actual sea lock.

Dalgard knew one moment of resistance as the merman closed the hatch behind them. For an instant it seemed that the dubious safety of the dressing chamber and a faint hope of the hunters' giving up their vigil was better than what might lie before them now. But Sssuri pushed shut the hatch, and Dalgard stood quietly, without offering any visible protest.

He tried to draw even breaths--slowly--as the merman activated the lock. When the water curled in from hidden openings, rising from ankle to calf and then to knee, its chill striking through flesh to bone, he kept to the same stolid waiting, though this seemed almost worse than a sudden gush of water sweeping them out in its embrace.

The liquid swirled about Dalgard's waist now, tugging at his belt, his arrow quiver, tapping on the bottom of the canister which held his precious air supply. His brow, shielded from the wet by its casing, was swallowed up inch by inch.

As the water lapped at his chin, the outer door opened with a slow inward push which suggested that the machinery controlling it had grown sluggish with the years. Sssuri, perfectly at home, darted out as soon as the opening was large enough to afford him an exit. And his thought came back to reassure the more clumsy landsman.

"We are in the shallows--land rises ahead. The roots of an island. There is nothing to fear--" The word ended abruptly in what was like a mental gasp of either astonishment or fear.

Knowing all the menaces which might lie in wait, even in the shallows of the sea, Dalgard drew his knife once more as he plowed through water--ready to rescue or at least to offer what aid he could.

10

THE DEAD GUARDIANS

The spacemen spent a cramped and almost sleepless night. Although in his training on Terra, on his trial trips to Mars and the harsh Lunar valleys, Raf had known weird surroundings and climates, inimical to his kind, he had always been able to rest almost by the exercise of his will. But now, curled in his roll, he was alert to every sound out of the moonless night, finding himself listening--for what he did not know.

Though there were sounds in plenty. The whistling call of some night bird, the distant lap, lap of water which he associated with the river curving through the long-deserted city, the rustle of grass as either the wind or some passing animal disturbed it.

"Not the best place in the world for a nap," Soriki observed out of the dark as Raf wriggled, trying to find a more comfortable position. "I'll be glad to see these bandaged boys on the ground waving good-bye as we head away from them--fast--"

"Those weren't animals they killed--back on that island." Raf brought out what was at the heart of his trouble.

"They wore fur instead of clothing." Soriki's reply was delivered in a colorless, even voice. "We have apes on Terra, but they are not men."

Raf stared up at the sky in which stars were sprinkled like carelessly flung dust motes. "What is a 'man'?" he returned, repeating the classical question which was a debating point in all the space training centers.

For so long his kind had wondered that. Was a "man" a biped with certain easily recognized physical characteristics? Well, by that ruling the furry things which had fled fruitlessly from the flames of the globe might well qualify. Or was "man" a certain level of intelligence, no matter what form housed that intelligence? They were supposed to accept the latter definition. Though, in spite of the horror of prejudice, Raf could not help but believe that too many Terrans secretly thought of "man" only as a creature in their own general image. By that prejudiced rule it was correct to accept the aliens as "men" with whom they could ally themselves, to condemn the furry people because they were not smooth-skinned, did not wear clothing, nor ride in mechanical transportation.

Yet somewhere within Raf at that moment was the nagging feeling that this was all utterly wrong, that the Terrans had not made the right choice. And that now "men" were _not_ standing together. But he had no intention of spilling that out to Soriki.

"Man is intelligence." The com-tech was answering the question Raf had almost forgotten that he had asked the moment before. Yes, the proper conventional reply. Soriki was not going to be caught out with any claim of prejudice.

Odd--when Pax had ruled, there were thought police and the cardinal sin was to be a liberal, to experiment, to seek knowledge. Now the wheel had turned--to be conservative was suspect. To suggest that some old ways were better was to exhibit the evil signs of prejudice. Raf grinned wryly. Sure, he had wanted to reach the stars, had fought doggedly to come to the very spot where he now was. So why was he tormented now with all these second thoughts? Why did he feel every day less akin to the men with whom he had shared the voyage? He had had wit enough to keep his semirebellion under cover, but since he had taken the flitter into the morning sky above the landing place of the spacer, that task of self-discipline was becoming more and more difficult.

"Did you notice," the com-tech said, going off on a new track, "that these painted boys were not too quick about blasting along to their strongbox? I'd say that they thought some bright rocket jockey might have rigged a surprise for them somewhere in there--"

Now that Soriki mentioned it, Raf remembered that the alien party who had gone into the city had huddled together, and that several of the black-and-white warriors had fanned out ahead as scouts might in enemy territory.

"They didn't go any farther than that building to the west either."

That Raf had not noticed, but he was willing to accept Soriki's observation. The com-tech had a ready eye for details. He'd better pay closer attention himself. This was no time to explore the why and wherefore of his present position. So, if they went no farther than that building, it would argue that the aliens themselves didn't care to go about here after nightfall. For he was certain that the isolated structure Soriki had pointed out was not the treasure house they had come to loot.

The night wore on and sometime during it Raf fell asleep. But the two or three hours of restless, dream-filled unconsciousness was not what he needed, and he blinked in the dawn with eyes which felt as if they were filled with hot sand. In the first gray light a covey of winged things, which might or might not have been birds, arose from some roosting place within the city, wheeled three times over the building, and then vanished out over the countryside.

Raf pulled himself out of his roll, made a sketchy toilet with the preparations in a belt kit, and looked about with little favor for either the scene or his part in it. The globe, sealed as if ready for a take-off, was some distance away, but installed about halfway between it and the flitter were two of the alien warriors. Perhaps they had changed watches during the night. If they had not, they could go without sleep to an amazing degree, for as Raf walked in a circle about the flyer to limber up, they watched him closely, nor did their grips on their odd weapons loosen. And he had a very clear idea that if he stepped over some invisible boundary he would be in for trouble.

When he came back to the flitter, Soriki was awake and stretching.

"Another day," the com-tech drawled. "And I could do with something besides field rations." He made a face at the small tin of concentrates he had dug out of the supply compartment.

"We'd do well to be headed west," Raf ventured.

"Now you can come in with that on the com again!" Soriki answered with unwonted emphasis. "The sooner I see the old girl standing on her pins in the middle distance, the better I'll feel. You know"--he looked up from his preoccupation with the ration package and gazed out over the city--"this place gives me the shivers. That other town was bad enough. But at least there were people living there. Here's nothing at all--at least nothing I want to see."

"What about all the wonders they've promised to show us?" countered Raf.

Soriki grinned. "And how much do we understand of their mouth-and-hand talk? Maybe they were promising us wonders, maybe they were offering to take us to where we could have our throats cut more conveniently--for them! I tell you, if I go for a walk with any of these painted faces, I'm going to have at least three of my fingers resting on the grip of my stun gun. And I'd advise you to do the same--if I didn't know that you were already watching these blast-happy harpies out of the corner of your eye. Ha--company. Oh, it's the captain--"

The hatch of the globe had opened, and a small party was descending the ladder, conspicuous among them the form and uniform of Captain Hobart. The aliens remained in a cluster at the foot of the ladder while the Terran commander crossed to the flitter.

"You"--he pointed to Raf--"are to come along with us."

"Why, sir?" "What about me, sir?" The questions from the two at the flitter came together.

"I said that one of you had to remain by the machine. Then they said that you, in particular, must come along, Kurbi."

"But I'm the pilot--" Raf began and then realized that it was just that fact which had made the aliens attach him to the exploring party. If they believed that the Terran flitter was immobilized when he, and he alone, was not behind its controls, this was just the move they would make. But there they were wrong. Soriki might not be able to repair or service the motor, but in a pinch he could take it up, send it westward, and land it beside the spacer. Each and every man aboard the _RS 10_ had that much training.

Now the com-tech was scowling. He had grasped the significance of that arrangement as quickly as Raf. "How long do I wait for you, sir?" he asked in a voice which had lost its usual good-humored drawl.

And at that inquiry Captain Hobart showed signs of irritation. "Your suspicions are not founded on facts," he stated firmly. "These people have displayed no signs of wanting to harm us. And an attitude of distrust at this point might be fatal for future friendly contact. Lablet is sure that they have a highly complex society, probably advanced beyond Terran standards, and that their technical skills will be of vast benefit to us. As it happens we have come at just the right moment in their history, when they are striving to get back on their feet after a disastrous series of wars. It is as if a group of off-world explorers had allied themselves with us after the Burn-Off. We can exchange information which will be of mutual benefit."

"If any off-world explorers had set down on Terra after the Burn-Off," observed Soriki softly, "they would have come up against Pax. And just how long would they have lasted?"

Hobart had turned away. If he heard that half-whisper, he did not choose to acknowledge it. But the truth in the com-tech's words made an impression on Raf, a crew of aliens who had been misguided enough to seek out and try to establish friendly relations with the officials of Pax would have had a short and most unhappy shrift. If all the accounts of that dark dictatorship were true, they would have vanished from Terra, and not in their ships either. What if something like Pax ruled here? They had no way of knowing for sure.

Raf's eyes met Soriki's, and the com-tech's hand dropped to hook fingers in his belt within touching distance of his side arm. The flitter pilot nodded.

"Kurbi!" Hobart's impatient call sent him on his way. But there was some measure of relief in knowing that Soriki was left behind and that they had this slender link with escape.

He had tramped the streets of that other alien city. There there had been some semblance of habitation; here was abandonment. Earth drifted in dunes to half block the lanes, and here and there climbing vines had broken down masonry and had dislodged blocks of the paved sideways and courtyards.

The party threaded their way from one narrow lane to another, seeming to avoid the wider open stretches of the principal thoroughfares, Raf became aware of an unpleasant odor in the air which he vaguely associated with water, and a few minutes afterward he caught glimpses of the river between the buildings which fronted on it. Here the party turned abruptly at a right angle, heading westward once more, passing vast, blank-walled structures which might have been warehouses.

One of the aliens just ahead of Raf in the line of march suddenly swung around, his weapon pointing up, and from its nose shot a beam of red-yellow light which brought an answering shrill scream as a large, winged creature came fluttering down. The killer kicked at the crumpled thing as he passed. As far as Raf could see there had been no reason for that wanton slaying.

The head of the party had reached a doorway, sealed shut by what looked like a solid slab of material. He placed both palms flat down on its surface at shoulder height and leaned forward against it, almost as if he were whispering some secret formula. Raf watched the muscles stand up on his slender arms as he exerted strength. And then the door split in two, and his fellows helped him push the separate halves back into the wall.

Lablet, Hobart, and Raf were among the last to enter. It was as if their companions had now forgotten them, for the aliens were pushing on at a pace which took them down an empty corridor at a quickening trot.

The corridor ended in a ramp which did not slope in one straight reach but curled around itself, so that in some places only the presence of a handrail, to which they all clung, kept them from losing balance. Then they gathered in a vaulted room, one of which opened a complete circle of closed doors.

There was some argument among the aliens, a dispute of sorts over which of those doors was to be opened first, and the Terrans drew a little apart, unable to follow the twittering words and lightning-swift gestures.

Raf tried to work out the patterns of color which swirled and looped over each door and around the walls, only to discover that too long an examination of any one band, or an attempt to trace its beginning or end, awoke a sick sensation which approached inner turmoil the longer he looked. At last he had to rest his eyes by studying the gray flooring under his boots.

The aliens finally made up their minds, or else one group was able to outargue the other, for they converged upon a door directly opposite the ramp. Once more they went through the process of unsealing the panels, while the Terrans, drawn by curiosity, were close behind them as they entered the long room beyond. Here were shelves in solid tiers along the walls, crowded with such an array of strange objects that Raf, after one mystified look, thought that it might well take months to sort them all out.

In addition, long tables divided the chamber into aisles. Halfway down one of these narrow passageways the aliens had gathered in a group as silent and intent now as they had been noisy outside. Raf could see nothing to so rivet their attention but a series of scuffed marks in the dust which covered the floor. But an alien, whom he recognized as the officer who had taken him to inspect the globe, moved carefully along that trail, following it to a second door. And as Raf pushed down another aisle, paralleling his course, he was conscious of a sickly sweet, stomach-churning stench. Something was very, very dead and not too far away.

The officer must have come to the same conclusion, for he hurried to open the other door. Before them now was a narrow hall broken by slit windows, near the roof, through which entered sunlight. And one such beam fully illuminated a carcass as large as that of a small elephant, or so it seemed to Raf's startled gaze.

It was difficult to make out the true appearance of the creature, though guessing from the scaled strips of skin it had been reptilian, for the body had been found by scavengers and feasting had been in progress.

The alien officer skirted the corpse gingerly. Raf though that he would like to investigate the body closely but could not force himself to that highly disagreeable task. There was a chorus of excited exclamation from the doorway as others crowded there.

But the officer, having circled the carcass, turned his attention to the dusty floor again. If there had been any trail there, it was now muddled past their reading, for remnants of the grisly meal had been dragged back and forth. The alien picked his way fastidiously through the noxious debris to the end of the long room. Raf, with the same care, toured the edge of the chamber in his wake.

They were out in a smaller passageway, which was taking them underground, the Terran estimated. Then there was a large space with barred cells about it and a second corridor. The stench of the death chamber either clung to them, or was wafted from another point, and Raf gagged as an especially foul blast caught him full in the face. He kept a sharp look about him for signs of those feasters. The feast had not been finished--it might have been that their entrance into the storeroom had disturbed the scavengers. And things formidable enough to drag down that scaled horror were not foes he would choose to meet in these unlighted ways.

The passage began to slope upward once more, and Raf saw a half-moon of light ahead, brilliant light which could only come from the sun. The alien was outlined there as he went out; then he himself was scuffing through sand close upon another death scene. The dead monster had had its counterparts, and here they were, sprawled out, mangled, and torn. Raf remained by the archway, for even the open air and the morning winds could not destroy the reek which seemed as deadly as a gas attack.

It must have disturbed the officer too, for he hesitated. Then with visible effort he advanced toward the hunks of flesh, casting back and forth as if to find some clue to the manner of their death. He was still so engaged when a second alien burst out of the archway, a splintered length of white held out before him as if he had made some important discovery.

The officer grabbed that shaft away from him, turning it around in his hands. And though expression was hard to read on those thin features under the masking face paint, the emotion his whole attitude expressed was surprise tinged with unbelief--as if the object his subordinate had brought was the last he expected to find in that place.

Raf longed to inspect it, but both aliens brushed by him and pattered back down the corridor, the discoverer pouring forth a volume of words to which the officer listened with great intentness. And the Terran pilot had to hurry to keep up with them.

Something he had seen just before he had left the arena remained in his mind: a forearm flung out from the supine body of what appeared to be the largest of the dead things--and on that forearm a bracelet of metal. Were those things pets! Watchdogs? Surely they were not intelligent beings able to forge and wear such ornaments of their own accord. And if they were watchdogs--whom did they serve? He was inclined to believe that the aliens must be their masters, that the monsters had been guardians of the treasure, perhaps. But dead guardians suggested a rifled treasure house. Who and what--?

His mind filled with speculations and questions, Raf trotted behind the others back to the chamber where they had found the first reptile. The alien who had brought the discovery to his commander stepped gingerly through the litter and laid the white rod in a special spot, apparently the place where it had been found.

At a barked order from the officer, two of the others came forward and tugged at the creature's mangled head, which had been freed from the serpent neck, rolling it over to expose the underparts. There was a broad tear there in the flesh, but Raf could see little difference between it and those left by the feasters. However the officer, holding a strip of cloth over his nose, bent stiffly above it for a closer look and then made some statement which sent his command into a babbling clamor.

Four of the lower ranks separated from the group and, with their hand weapons at alert, swung into action, retracing the way back toward the arena. It looked to Raf as if they now expected an attack from that direction.

Under a volley of orders the rest went back to the storeroom, and the officer, noting that Raf still lingered, waved him impatiently after them.

Inside the men spread out, going from shelf to table, selecting things with a speed which suggested that they had been rehearsed in this task and had only a limited time in which to accomplish it. Some took piles of boxes or other containers which were so light that they could manage a half-dozen in an armload, while two or three others struggled pantingly to move a single piece of weird machinery from its bed to the wheeled trolley they had brought. There was to be no lingering on this job--that was certain.

11

ESPIONAGE

Intent upon joining Sssuri, Dalgard left the lock, forgetting his earlier unwillingness, stepping from the small chamber down to the sea bottom, or endeavoring to, although instinctively he had begun to swim and so forged ahead at a different rate of speed.

Waving fronds of giant water plants, such as were found only in the coastal shallows, grew forest fashion but did not hide rocks which stretched up in a sharp rise not too far ahead. The scout could not see the merman, but as he held onto one of those fronds he caught the other's summons:

"Here--by the rocks--!"

Pushing his way through the drifting foliage, Dalgard swam ahead to the foot of the rocky escarpment. And there he saw what had so excited his companion.

Sssuri had just driven away an encircling collection of sand-dwelling scavengers, and what he was on his knees studying intently was an almost clean-picked skeleton of one of his own race. But there was something odd--Dalgard brushed aside a tendril of weed which cut his line of vision and so was able to see clearly.

White and clean most of those bones were, but the skull was blackened, and similar charring existed down one arm and shoulder. That merman had not died from any mishap in the sea!

"It is so," Sssuri replied to his thought. "_They_ have come once more to give the flaming death--"

Dalgard, startled, looked up that slope which must lead to the island top above the waves.

"Long dead?" he asked tentatively, already guessing what the other's answer would be.

"The pickers move fast," Sssuri indicated the sand dwellers. "Perhaps yesterday, perhaps the day before--but no longer than that."

"And _they_ are up there now?"

"Who can tell? However, _they_ do not know the sea, nor the islands--"

It was plain that the merman intended to climb to investigate what might be happening above. Dalgard had no choice but to follow. And it was true that the merpeople had no peers or equals when it came to finding their ways about the sea and the coasts. He was confident that Sssuri could get to the island top and discover just what he wished to learn without a single sentry above, if they had stationed sentries, being the wiser. Whether he himself could operate as efficiently was another matter.

In the end they half climbed, half swam upward, detouring swiftly once to avoid the darting attack of a rock hornet, harmless as soon as they moved out of the reach of its questing stinger, for it was anchored for its short life to the rough hollow in which it had been hatched.

Dalgard's head broke water as he rolled through the surf onto a scrap of beach in the lee of a row of tooth-pointed outcrops. It was late evening by the light, and he clawed the mask off his face to draw thankful lungfuls of the good outer air. Sssuri, his fur sleeked tight to his body, waded ashore, shook himself free of excess water, and turned immediately to study the wall of the cliff which guarded the interior of the island.

This was one of a chain of such isles, Dalgard noted, now that he had had time to look about him. And with their many-creviced walls they were just the type of habitations which appealed most strongly to the merpeople. Here could be found the dry inner caves with underwater entrances, which they favored for their group homes. And in the sea were kelp beds for harvesting.

The cliffs did not present too much of a climbing problem. Dalgard divested himself of the diving equipment, tucking it into a hollow which he walled up with stones that he thought the waves would not scour out in a hurry. He might need it again. Then, hitching his belt tighter, pressing what water he could out of his clothing, and settling his bow and quiver to the best advantage at his back, he crossed to where Sssuri was already marking claw holds.

"We may be seen--" Dalgard craned his neck, trying to make out details of what might be waiting above.

The merman shook his head with a quick jerk of negation. "_They_ are gone. Behind them remains only death--much death--" And the bleakness of his thoughts reached the scout.

Dalgard had known Sssuri since he was a toddler and the other a cub coming to see the wonders of dry land for the first time. Never, during all their years of close association since, had he felt in the other a desolation so great. And to that emotional blast he could make no answer.

In the twilight, with the last red banners across the sky at their back, they made the climb. And it was as if the merman had closed off his mind to his companion. Flesh fingers touched scaled ones as they moved from one hold to the next, but Sssuri might have been half a world away for all the communication between them. Never had Dalgard been so shut out and with that his sensitivity to the night, to the world about him, was doubly acute.

He realized--and it worried him--that perhaps he had come to depend too much on Sssuri's superior faculty of communication. It was time that he tried to use his own weaker powers to the utmost extent. So, while he climbed, Dalgard sent questing thoughts into the gloom. He located a nest of duck-dogs, those shy waterline fishers living in cliff holes. They were harmless and just settling down for the night. But of higher types of animals from which something might be learned--hoppers, runners--there were no traces. For all he was able to pick up, they might be climbing into blank nothingness.

And that in itself was ominous. Normally he should have been able to mind touch more than duck-dogs. The merpeople lived in peace with most of the higher fauna of their world, and a colony of hoppers, even a covey of moth birds, would settle in close by a mer tribe to garner in the remnants of feasts and for protection from the flying dragons and the other dangers they must face.

"_They_ hunt all life," the first break in Sssuri's self-absorption came. "Where _they_ walk the little, harmless peoples face only death. And so it has been here." He had pulled himself over the rim of the cliff, and through the dark Dalgard could hear him panting with the same effort which made his own lungs labor.

Just as the stench of the snake-devil's lair had betrayed its site, here disaster and death had an odor of its own. Dalgard retched before he could control throat and stomach muscles. But Sssuri was unmoved, as if he had expected this.

Then, to Dalgard's surprise the merman set up the first real call he had ever heard issue from that furred throat, a plaintive whistle which had a crooning, summoning note in it, akin to the mind touch in an odd fashion, yet audible. They sat in silence for a long moment, the human's ears as keen for any sound out of the night as those of his companion. Why did Sssuri not use the customary noiseless greeting of his race? When he beamed that inquiry, he met once again that strange, solid wall of non-acceptance which had enclosed the merman as they climbed. As if now there was danger to be feared from following the normal ways.

Again Sssuri whistled, and in that cry Dalgard heard a close resemblance to the flute tone of the night moth birds. Up the scale the notes ran with mournful persistence. When the answer came, the scout at first thought that the imitation had lured a moth bird, for the reply seemed to ripple right above their heads.

Sssuri stood up, and his hand dropped on Dalgard's shoulder, applying pressure which was both a warning and a summons, bringing the scout to his feet with as little noise as possible. The horrible smell caught at his throat, and he was glad when the merman did not head inland toward the source of that odor, but started off along the edge of the cliff, one hand in Dalgard's to draw him along.

Twice more Sssuri paused to whistle, and each time he was answered by a signing note or two which seemed to reassure him.

Against the lighter expanse which was the sea, Dalgard saw the loom of a peak which projected above file general level of the island. Though he knew that the merpeople did not build aboveground, being adept in turning natural caves and crevices into the kind of living quarters they found most satisfactory, the barrenness of this particular rock top was forbidding.

Led by Sssuri, he threaded a tangled patch among outcrops, once-squeezing through a gap which scraped the flesh on his arms as he wriggled. Then the sky was blotted out, the last winking star disappeared, and he realized that he must have entered a cave of sorts, or was at least under an overhang.

The merman did not pause but padded on, tugging Dalgard along, the scout's boots scraping on the rough footing. The colonist was conscious now that they were on an incline, heading down into the heart of the island. They came to a stretch where Sssuri set his hands on holds, patiently shoved his feet into hollowed places, finding for him the ladder steps he could not see, which took him through a sweating, fearful journey of yards to another level, another sloping, downward way.

Here at long last was a fraction of light, not the violet glimmer which had illuminated the underground ways of those Others, but a ghostly radiance which he recognized as the lamps of the mermen--living creatures from the sea depths imprisoned in laboriously fashioned globes of crystal and kept in the caves for the light they yielded.

But still no mind touch! Never had Dalgard penetrated into the cave cities of the sea folk before without inquiries and open welcome lapping about him. Were they entering a place of massacre where no living merman remained? Yet there was that whistling which had led Sssuri to this place....

And at that moment a shrill keening note arose from the depths to ring in Dalgard's ears, startling him so that he almost lost his footing. Once again Sssuri made answer vocally--but no mind touch.

Then they rounded a curve, and the scout was able to see into the heart of the amphibian territory. This was a natural cave, as were all the merman's dwellings, but its walls had been smoothed and hung with the garlands of shells which they wove in their leisure into strange pictures. Silver-gray sand, smooth and dust-fine, covered the floor to the depth of a foot or more. And opening off the main chamber were small nooks, each marking the private storage place and holding of some family clan. It was a large place, and with a quick estimate Dalgard thought that it had been fashioned to harbor close to a hundred inhabitants, at least the nooks suggested that many. But gathered at the foot of the ledge they were descending, spears poised, were perhaps ten males, some hardly past cubhood, others showing the snowy shine of fur which was the badge of age. And behind them, drawn knives in their ready hands, were half again as many merwomen, forming a protecting wall before a crouching group of cubs.

Sssuri spoke to Dalgard. "Spread out your hands--empty--so that they may see them clearly!"

The scout obeyed. In the limited light his ten fingers were fans, and it was then that he understood the reason for such a move. If these mermen had not seen a colonist before, he might resemble Those Others in their eyes. But only his species on all Astra had five fingers, five toes, and that physical evidence might insure his safety now.

"Why do you bring a destroyer among us? Or do you offer him for our punishment, so that we can lay upon him the doom that his kind have earned?"

The question came with arrow force, and Dalgard held out his hands, hoping they would see the difference before one of those spears from below tore through his flesh.

"Look upon the hands of this--my knife brother--look upon his face. He is not of the race of those you hate, but rather one from the south. Have you of the northern reaches not heard of Those-Who-Help, Those-Who-Came-From-the-Stars?"

"We have heard." But there was no relaxing of tension, not a spear point wavered.

"Look upon his hands," Sssuri insisted. "Come into his mind, for he speaks with us so. And do _they_ do that?"

Dalgard tried to throw open his mind, awaiting the trial. It came quickly, traces of inimical, alien thought, which changed as they touched his mind, reading there only all the friendliness he and his held for the sea people.