Raf would gladly have run, but he could not move faster than his guides, and while their pace seemed deliberate, they did not pause to rest. The whole city, he decided, must be honeycombed with these drains. After traversing a fourth tunnel, they climbed out of the flood onto a dry pa.s.sage, which wormed along, almost turning on itself at times.

Side pa.s.sages ran out from this corridor like rootlets from a parent root, and small parties of mermen broke from the regiment to follow certain ones, leaving without orders or farewells. At the fifth of these Dalgard touched Raf's arm and drew him aside.

"This is our way." Tensely the scout waited. If the stranger refused, then the one plan the scout had formed during the past half-hour would fail. He still held to the hope that Raf, with what Raf carried, could succeed in the only project which would mean, perhaps not his safety nor the safety of the tribe he now marched among, but the eventual safety of Astra itself, the safety of all the harmless people of the sea, the little creatures of the gra.s.s and the sky, of his own land at Homeport. He would have to force Raf into action if need be. He did not use the mind touch; he knew now the unspoken resentment which followed that. If it became necessary--Dalgard's hands balled into fists--he would strike down the stranger--take from him--Swiftly he turned his thoughts from that. It might be easy, now that he had established mental contact with this off-worlder, for the other to pick up a thought as vivid as that.

But luckily Raf obediently turned into the side pa.s.sage with the six mermen who were to attack at this particular point. The way grew narrower until they crept on hands and knees between rough walls which were not of the same construction as the larger tunnels. The smaller mermen had no difficulty in getting through, but twice Raf's equipment belt caught on projections and he had to fight his way free.

They crawled one by one into a ventilation shaft much like the one he had climbed at the Center. Dalgard's whisper reached him.

"We are now in the building which houses their sky ship."

"I know that one," Raf returned almost eagerly, glad at last to be back so close to familiar territory. He climbed up the hand-and footholds the sea-monster lamp disclosed, wishing the mermen ahead would speed up.

The grille at the head of the shaft had been removed, and the invaders arose one by one into a dim and dusty place of motionless machinery, which, by all tangible evidence, had not been entered for some time.

But the cautious manner in which the sea people strung out to approach the far door argued that the same might not be true beyond.

For the first time Raf noticed that his human companion now held one of the knives of the merpeople, and he drew his stun gun. But he could not forget the flame-throwers which might at that very moment be trained upon the other side of that door by the aliens. They might be walking into a trap.

He half expected one of those disconcerting thought answers from Dalgard. But the scout was playing safe--nothing must upset the stranger. Confronted by what had to be done, he might be influenced into acting for them. So Dalgard strode softly ahead, apparently not interested in Raf.

One of the mermen worked at the door, using the point of his spear as a lever. Here again was a vista of machinery. But these machines were alive; a faint hum came from their casings. The mermen scattered, taking cover, a move copied by the two humans.

The pilot remained in hiding, but he saw one of the furred people running on as light-footedly as a shadow. Then his arm drew back, and he cast his spear. Raf fancied he could hear a faint whistle as the weapon cut the air. There was a cry, and the merman ran on, vanishing into the shadows, to return a second or two later wiping stains from his weapon. Out of their places of concealment, his fellows gathered about him. And the humans followed.

Now they were fronted by a ramp leading up, and the mermen took it quickly, their bare, scaled feet setting up a whispering echo which was drowned by the clop of Raf's boots. Once more the party was alert, ready for trouble, and taking his cue from them, he kept his stun gun in his hand.

But the maneuver at the head of the ramp surprised him. For, though he had heard no signal, all the party but one plastered their bodies back against the wall, Dalgard pulling Raf into position beside him, the scout's muscular bare arm pinning the pilot into a narrow s.p.a.ce. One merman stood at the crack of the door at the top of the ramp. He pushed the barrier open and crept in.

Meanwhile those who waited poised their spears, all aimed at that door. Raf fingered the b.u.t.ton on his gun to "spray" as he had when he had faced the attack of the scavengers in the arena tunnels.

There was a cry, a shout with a summons in it. And the venturesome merman thudded back through the door. But he was not alone. Two of the black guardsmen, their flamers spitting fiery death, ran behind him, and the curling lash of one of those flames almost wreathed the runner before he swung aside. Raf fired without consciously aiming. Both of the sentries fell forward, to slide limply down the ramp.

Then Dalgard pulled him on. "The way is open," he said. "This is it!"

There was an excited exultation in his voice.

17

DESTRUCTION UNLEASHED

The s.p.a.ce they now entered must be the core of the building, Raf thought a little dazedly. For there, towering over them was the round bulb of the globe. And about its open hatch were piles of the material which he had last seen in the warehouse on the other continent. The unloading of the alien ship had been hastily interrupted.

Since neither the merman nor Dalgard took cover, Raf judged that they did not fear attack now. But when he turned his attention away from the ship, he found not only the colony scout but most of the sea people gathered about him as if waiting for some action on his part.

"What is it?" He could feel it, that strong pressure, that band united, in willing him into some move. His stubborn streak of independence made his reaction contrary. He was not going to be pushed into anything.

"In this hour," Dalgard spoke aloud, avoiding the mind touch which might stiffen Raf's rebellion. He wished that some older, wiser Elder from Homeport were there. So little time--Yet this stranger with practically no effort might accomplish all they had come to do, if he could only be persuaded into action. "In this hour, here is the heart of what civilization remains to Those Others. Destroy it, and it will not matter whether they kill us. For in the days to come they will have nothing left."

Raf understood. This was why he had been brought here. They wanted him to use the blast bombs. And one part of him _was_ calculating the best places to set his two remaining bombs for the wildest possible destruction. That part of him could accept the logic of Dalgard's reasoning. He doubted if the aliens could repair the globe if it were damaged, and he was sure that much which they had brought back from the eastern continent was irreplaceable. The bombs had not been intended for such a use. They were defensive, anti-personal weapons to be employed as he had done against the lizard in the arena. But placed properly--Without thinking his hands went to the sealed pocket in the breast of his tunic.

Dalgard saw that gesture and inside him some taut cord began to unwind. Then the stranger's hands dropped, and he swung around to face the colony scout squarely, a scowl twisting his black brows almost together.

"This isn't my fight," he stated flatly. "I've got to get back to the flitter, to my s.p.a.cer--"

What was the matter? Dalgard tried to understand. If the aliens won now, this stranger was in as great a danger as were the rest of them.

Did he believe that Those Others would allow any colony to be established on a world they ruled?

"There will be no future for you here," he spoke slowly, trying with all his power to get through to the other. "They will not allow you to found another Homeport. You will have no colony--"

"Will you get it into your thick head," burst out the pilot, "that I'm not here to start a colony! We can take off from this blasted planet whenever we want to. We didn't come here to stay!"

Beneath the suntan, Dalgard's face whitened. The other had come from no outlaw ship, seeking a refuge across s.p.a.ce, as his own people had fled to a new life from tyranny. His first fears had been correct!

This was a representative of Pax, doubtless sent to hunt down the descendants of those who had escaped its throttling dictatorship. The slender strangely garbed Terran might be of the same blood as his own, but he was as great an enemy as Those Others!

"Pax!" He did not know that he had said that word aloud.

The other laughed. "You are living back in history. Pax has been dead and gone almost two centuries. I'm of the Federation of Free Men--"

"Will the stranger use his fire now?" The question formed in Dalgard's mind. The mermen were growing impatient, as well they might. This was no time for talk, but for action. Could Raf be persuaded to aid them?

A Federation of Free Men--Free Men! That was what they were fighting for here and now.

"You are free," he said. "The sea people won their freedom when Those Others fought among themselves. My people came across the star void in search of freedom, paying in blood to win it. But these, these are not the weapons of the free." He pointed to the supplies about the globe, to the globe itself.

The mermen were waiting no longer. With the b.u.t.ts of their spears they smashed anything breakable. But the damage one could do by hand in the short s.p.a.ce of time granted them--Raf was surprised that a guard was not already down upon them--was sharply limited. The piled-up secrets of an old race, a race which had once ruled a planet. He thought fleetingly of Lablet's preoccupation with this spoil, of Hobart's hope of gaining knowledge they could take back with them. But would the aliens keep their part of the bargain? He no longer believed that.

Why not give these barbarians a chance, and the colonists. Sure, he was breaking the stiffest rule of the Service. But, perhaps by now the flitter was gone, he might never reach the _RS 10_. It was not his war, right enough. But he'd give the weaker side a fighting chance.

Dalgard followed him into the globe ship, climbing the ladders to the engine level, watching with curious eyes as Raf inspected the driving power of the ship and made the best disposition possible of one of the bombs.

Then they were on the ladder once more as the ship shook under them, plates buckling as a great wound tore three decks apart. Raf laughed recklessly. Now that he was committed to this course, he had a small-boy delight in the destruction.

"They won't raise her again in a hurry," he confided to Dalgard. But the other did not share his triumph.

"They come--we must move fast," the scout urged.

When they jumped from the hatch, they discovered that the mermen had been busy in their turn. As many of the supplies as they could move had been pushed and piled into one great ma.s.s. Broken crystal littered the floor in shards and puddles of strange chemicals mingled smells to become a throat-rasping fog. Raf eyed those doubtfully. Some of those fumes might combine in the blast--

Once again Dalgard read his mind and waved the mermen back, sending them through the door to the ramp and the lower engine room. Raf stood in the doorway, the bomb in his hand, knowing that it was time for him to make the most accurate cast of his life.

The sphere left his fingers, was a gleam in the murky air. It struck the pile of material. Then the whole world was hidden by a blinding glare.

It was dark--black dark. And he was swinging back and forth through this total darkness. He was a ball, a blast bomb being tossed from hand to hand through the dark by painted warriors who laughed shrilly at his pain, tossed through the dark. Fear such as he had never known, even under the last acceleration pressure of the take-off from Terra, beat through Raf's veins away from his laboring heart. He was helpless in the dark!

"Not alone--" the words came out of somewhere, he didn't know whether he heard them, or, in some queer way, felt them. "You are safe--not alone."

That brought a measure of comfort. But he was still in the dark, and he was moving--he could not will his hands to move--yet he was moving.