North, and without a pause. She saw his shadow stride past a few seconds later and heard him begin to hum, apparently very pleased with himself. What could he have done to “fix” her? Rigged a trap of some kind, perhaps? Nestamay frowned intently, attempting to turn familiar routes within the dome back to front, so as to determine whether Jasper had been able to reach any of the mazy paths up to the office in the short time he had spent inside. She failed to decide; it was a problem she had never tackled before, relating this unfrequented side of the Station to the safe paths within it. The answer, however, came of its own accord, and only minutes later.

It took the form of a tremendous crash, followed by grinding and tearing noises. Nestamay leapt to her feet. Was that the result of Jasper’s visit-the springing of some sort of deadfall trap aimed at her, but operated by someone else or of its own accord?

The idea had barely framed itself in her mind before she realised it was false. For the grinding and tearing noises continued, and a fresh sound joined them: an animal bellowing.

That left only one explanation. A thing had just hatched inside the dome-and as the alarm hadn’t sounded to signal the random operation of the mysterious process responsible, that meant Jasper must have disconnected it!

Everything else driven out of her mind, Nestamay broke from her hiding-place and raced in search of someone-anyone-to warn. It didn’t matter now about escaping into the desert, or avoiding Jasper. He had done something completely unforgivable, thinking perhaps that the odds were against a thing appearing in the short time before Nestamay was due to begin her watch and hoping that she might find herself trapped inside the Station with an unsignalled monster.

Surely even Grandfather couldn’t stomach a crime like this!

Panting, she came in earshot of the returned search party gathering at the south side of the dome. She shrieked at them as loudly as she could.

“There’s a thing just hatched! Big-inside the dome still!”

Keefe, at the centre of the group listening to reports of the day’s search, turned his one eye on her in amazement.

“There’s been no alarm!” he snapped.

“It’s not working!” Nestamay gasped. “Jasper turned it off.”

“What?” An incredulous chorus greeted the assertion. “But that isn’t possible!”

“Well, maybe he broke it!” Nestamay snapped. “But the thing is there and the alarm didn’t work and Jasper was in the dome a short while ago. Get around and spread the word!”

She took to her heels again, heading north in search of Grandfather.

But long before she located him, the thing in the dome had proved its existence beyond doubt. It was the most monstrous to be spawned by the incomprehensible forces of the Station in living memory. Fully twenty feet tall, it was recognisable as animal only because it moved and roared; that apart, it was a confused tangle of long grasping tentacles set so thickly on its body it was impossible to see its underlying shape. It was immensely strong, too. From its point of origin in the zone of the dome made inaccessible by the tangled alien vegetation it had headed straight for the exterior, breaking or throwing aside whatever was in its way. By the time Nestamay saw it, it was already out in the open, and a huge sagging gash in the dome wall marked its point of emergence. Even if they had had the alarm to warn them, there would have been no question of herding this into one of the dome’s exit channels and tormenting it with the electrofence-it was simply too big!

Frantically men came running from all directions, some carrying heatbeams, some with hatchets or other makeshift weapons, only to stop irresolutely on seeing how vast this thing really was. Towering over them, it seemed that not even a heatbeam on full power could possibly do more than madden it.

A frightened man swung around and saw Grandfather approaching behind Nestamay. In a scream like a child’s, he demanded to be told what to do. Grandfather, taking in the size of the monster, paled, and Nestamay felt a pang of spiteful amusement.

“Heatbeams!” Grandfather shouted at last, and Keefe caught the order. He had already anticipated it; he was manhandling one of the bulky projectors with its trailing umbilical cord of insulated cable. Now he supplemented it.

“Get between it and the dome! Drive it away!” he yelled.

Grim-faced, men moved to obey. Down came a lashing tentacle, sweeping clear an area twenty feet in radius, and caught at the cord of one of the heatbeams. It snapped like thread. The man bearing the useless weapon shouted and tried to run; he stumbled. The tentacle cracked across his back like a whip, and he lay still.

“Don’t stand looking-do something!” Grandfather bellowed.

Keefe was already doing it. He had used the distraction of the past few seconds to get his beam set up between the thing and the hole in the dome. Now he switched the power on.

The thing’s narrowest, topmost tentacles blackened instantly. It howled. It lashed out. The heat increased inversely with the square root of the tentacles’ distance from the projector, and four tentacles at once shrivelled to ash. Another projector started up, blazing away their accumulated power at something like a megawatt in three minutes.

But the heatbeams told. The thing began to sidle away; paused on discovering that the pain lessened; lashed out anew and lost more tentacles. Men dived out of its path as it began to retreat, and screamed with excitement and relief. They picked up rocks and hurled them from safely beyond the range of its tentacles. Others who had taken the time to fetch weapons now joined in pursuit, using javelins and arrows fashioned from scrap metal. Nestamay found she had been biting her lip so hard she could taste blood, and forced cramped jaw muscles to relax as the danger dwindled.

“Why was there no alarm?” Grandfather shouted-at Keefe, wrestling with his heatbeam.

Nestamay clutched his arm. “Grandfather, I told you! Jasper turned the alarm off!”

“You’re out of your mind, girl!” Grandfather blazed. “No one could turn it off. No one would think of turning it off and putting all our lives in danger.”

“Then where is Jasper?” Keefe rasped. He set down the heavy projector and wiped his face, his one eye on the fleeing thing as it headed for the East Brokes. “You’ve got to tackle him on this point, Maxall! The alarm’s never failed before, and I for one want to know why it failed this time!”

There was no doubt that the monster was in flight now. It was outdistancing its pursuers, and their rocks, javelins and even arrows were falling short. Watching it, Grandfather licked his lips.

“Not this time!” Nestamay said fiercely. “What’s the good of my having Jasper’s children and keeping up the line if he’s going to wreck the Station with his insane behaviour?”

“That’s right,” Keefe said, and spat sidelong. Grandfather’s mouth worked, but no words came out.

And then there were two explosions in the distance.

A pause.

Two more.

They whirled to stare in the direction from which the noise had come-the direction taken by the injured thing. They were just in time to see it stumble, if such a polypodal beast could stumble, on the lower slopes of the East Brokes. It halted, swayed, began to topple.

Two more explosions, and it fell writhing, and from beyond it, from among the random rocks, a figure rose into sight. And another. Nestamay felt the world begin to spin around her.

Two strangers. Two strangers! Two new human beings!

XIX

To Conrad, seeing the towering monster approach, it had been for an instant as though the rest of the universe had ceased to exist. All his childhood terror of things from the barrenland leapt up to dominate his mind. Here was that terror incarnate, howling and flailing its uncountable limbs. The dome, the people, the outside world ceased to matter. There was only Conrad and the raging menace.