I looked back down the slope we had been climbing steadily for more hours than I could keep track of, trying to judge their distance.

"Not more than five miles," I said. "They could have closed any time in the last couple of hours. What are they waiting for?"

He glanced up at the high ridge, dazzling two miles above. "Up there, the air is thin and cold. They sense that we will weaken."

"And they"re right."

"They too will be weakened, Carl Patton, though not perhaps so much as we." He said this as unconcernedly as if he were talking about whether tomorrow would be a good day for a picnic.

"Don"t you care?" I asked him. "Doesn"t it matter to you if a pack of hungry meat-eaters corners you in the open?"

"It is their nature," he said simply.

"A stiff upper lip is nifty-but don"t let it go to your head. How about setting up an ambush-up there?" I pointed out a jumble of rock slabs a hundred yards above.

"They will not enter it."

"OK," I said. "You"re the wily native guide. I"m just a tourist. We"ll play it your way. But what do we do when it gets dark?"

"The moon will soon rise."

In the next two hours we covered about three-quarters of a mile. The slope was close to forty-five degrees now. Powdery snow went cascading down in slow plumes with every step. Without the suit I don"t know if I could have stayed with it, even with the low gravity. Big Johnny was using his hands a lot now; and the dog"s puffing was piteous to hear.

"How old is the mutt?" I asked when we were lying on our backs at the next break, with my trailmates working hard to get some nourishment out of what to them was some very thin atmosphere, and me faking the same distress, while I breathed the rich mixture from my suit collector.

"Three years."

"That would be about thirty-five Standard. How long . . ." I remembered my panting and did some, " . . . do they live?"

"No one. . . knows."

"What does that mean?"

"Her kind . . . die in battle."

"It looks like she"ll get her chance."

"For that . . . she is grateful."

"She looks scared to death," I said. "And dead beat."

"Weary, yes. But fear is not bred in her."

We made another half mile before the pack decided the time had come to move in to the attack.

20.

The dog knew it first; she gave a bellow like a gut-shot elephant and took a twenty-foot bound down-slope to take up her stand between us and them. It couldn"t have been a worse position from the defensive viewpoint, with the exception of the single factor of our holding the high ground. It was a featureless stretch of frozen snow, tilted on edge, naked as a tin roof. The big fellow used his number forty"s to stamp out a hollow, working in a circle to widen it.

"You d.a.m.n fool, you ought to be building a mound," I yelled at him. "That"s a cold grave you"re digging."

"Do as I do . . . Carl Patton," he panted. "For your life."

"Thanks; I"ll stay topside." I picked a spot off to his left and kicked some ice chunks into a heap to give me a firing platform. I made a big show of checking the slug-thrower, then in.o.btrusively set the crater gun for max range, narrow beam. I don"t know why I bothered playing it foxy; Big Boy didn"t know the difference between a legal weapon and contraband. Maybe it was just the instinct to have an ace up the sleeve. By the time I finished, the pack was a quarter of a mile away and coming up fast, not running or leaping, but twinkling along on cl.u.s.ters of steel-rod legs that ate up the ground like a fire eats dry gra.s.s.

"Carl Patton, it would be well if you stood by my back," the big man called.

"I don"t need to hide behind you," I barked.

"Listen well!" he said, and for the first time his voice lacked the easy, almost idle tone. "They cannot attack in full charge. First must they halt and raise their barb. In that moment are they vulnerable. Strike for the eye-but beware the ripping claws!"

"I"ll work at a little longer range," I called back, and fired a slug at one a little in advance of the line but still a couple of hundred yards out. There was a bright flash against the ice; a near miss. The next one was dead on-a solid hit in the center of the leaf-shaped plate of tarnish-black armor that covered the thorax. He didn"t even break stride.

"Strike for the eye, Carl Patton!"

"What eye?" I yelled. "All I see is plate armor and pistons!" I fired for the legs, missed, missed again, then sent fragments of a limb flying. The owner may have faltered for a couple of microseconds, or maybe I just blinked. I wasn"t even sure which one I had hit. They came on, closing ranks now, looking suddenly bigger, more deadly, like an a.s.sault wave of light armor, barbed and spiked and invulnerable, with nothing to stop them but a man with a stick, a worn-out old hound, and me, with my popgun. I felt the weapon bucking in my hand, and realized I had been firing steadily. I took a step back, dropped the slug thrower, and palmed the crater gun as the line reached the spot where Woola crouched, waiting.

But instead of slamming into the big dog at full bore, the pair facing her skidded to a dead stop, executed a swift but complicated rearrangement of limbs, dropping their forward ends to the ground, bringing their hindquarters up and over, unsheathing two-foot-long stingers that poised, ready to plunge down into the unprotected body of the animal. . . .

I wouldn"t have believed anything so big could move so fast. She came up from her flattened position like a cricket off a hot plate, was in mid-air, twisting to snap down at the thing on the left with jaws like a bear trap, landed sprawling, spun, leaped, snapped, and was poised, snarling, while two ruined attackers flopped and stabbed their hooks into the ice before her. I saw all this in a fast half-second while I was bringing the power gun up, squeezing the firing stud to pump a multi-megawatt jolt into the thing that was rearing up in front of me. The shock blasted a foot-wide pit in it, knocked it a yard backward-but didn"t slow its strike. The barb whipped up, over, and down to bury itself in the ice between my feet.

"The eye!" The big man"s voice boomed at me over the snarls of Woola and the angry buzzing that was coming from the attackers. "The eye, Carl Patton!"

I saw it then: a three-inch patch like reticulated gla.s.s, deep red, set in the curve of armor above the hook-lined prow. It exploded as I fired. I swiveled left and fired again, from the corner of my eye saw the big man swing his club left, right. I was down off my mound, working my way over to him, slamming shots into whatever was closest. The scorpions were all around us, but only half a dozen at a time could crowd in close to the edge of the twelve-foot depression the giant had tramped out. One went over, pushed from behind, scrabbling for footing, and died as the club smashed down on him. I killed another and jumped down beside the giant.

"Back to back, Carl Patton," he called. A pair came up together over a barricade of dead monsters, and while they teetered for attack position I shot them, then shot the one that mounted their threshing corpses. Then suddenly the pressure slackened, and I was hearing the big man"s steam-engine puffing, the dog"s rasping snarls, was aware of a pain in my thigh, of the breath burning in my throat. A scorpion jittered on his thin legs ten feet away, but he came no closer. The others were moving back, buzzing and clacking. I started up over the side and an arm like a jib boom stopped me.

"They must . . . come to us." The giant wheezed out the words. His face was pink and he was having trouble getting enough air, but he was smiling.

"If you say so," I said.

"Your small weapon strikes a man"s blow," he said, instead of commenting on my stupidity.

"What are they made of? They took my rounds like two-inch flint steel."

"They are no easy adversaries," he said. "Yet we killed nine." He looked across at where the dog stood panting, facing the enemy. "Woola slew five. They learn caution-" He broke off, looking down at me, at my leg. He went to one knee, touched a tear in my suit I hadn"t noticed. That shook me, seeing the ripped edge of the material. Not even a needler could penetrate the stuff-but one of those barbs had.

"The hide is unbroken," he said. "Luck was with you this day, Carl Patton. The touch of the barb is death."

Something moved behind him and I yelled and fired and a scorpion came plunging down on the spot where he"d been standing an instant before. I fell and rolled, came around, put one in the eye just as Johnny Thunder"s club slammed home in the same spot. I got to my feet and the rest of them were moving off, back down the slope.

"You d.a.m.ned fool!" I yelled at the giant. Rage broke my voice. "Why don"t you watch yourself?"

"I am in your debt, Carl Patton," was all he said.

"Debt, h.e.l.l! n.o.body owes me anything-and that goes both ways!"

He didn"t answer that, just looked down at me, smiling a little, like you would at an excited child. I took a couple of deep breaths of warmed and fortified tank air and felt better-but not much.

"Will you tell me your true name, small warrior?" the giant said.

I felt ice form in my chest.

"What do you mean?" I stalled.

"We have fought side by side. It is fitting that we exchange the secret names our mothers gave us at birth."

"Oh, magic, eh? Juju. The secret word of power. Skip it, big fellow. Johnny Thunder is good enough for me."

"As you will . . . Carl Patton." He went to see to the dog then, and I checked to see how badly my suit was damaged. There was a partial power loss in the leg servos and the heat was affected, too. That wasn"t good. There were still a lot of miles to walk out of the giant before the job was done.

When we hit the trail half an hour later I was still wondering why I had moved so fast to save the life of the man I"d come here to kill.

21.

We halted for sleep three hours later. It was almost full dark when we turned in, curled up in pits trampled in the snow. Johnny Thunder said the scorpions wouldn"t be back until they"d eaten their dead, but I sweated inside my insulated longjohns as the last of the light faded to a pitch black like the inside of an unmarked grave. Then I must have dozed off, because I woke with bluewhite light in my face. The inner moon, Cronus, had risen over the ridge, a cratered disk ten degrees wide, almost full, looking close enough to jump up and bang my head on, if I"d felt like jumping. I didn"t.

We made good time in the moonlight, considering the slope of the glacier"s skirt we were climbing. At forty-five thousand feet, we topped the barrier and looked down the far side and across a shadowed valley to the next ridge, twenty miles away, silver-white against the stars.

"Perhaps on the other side we will find them," the giant said. His voice had lost some of its timbre. His face looked frostbitten, pounded numb by the sub-zero wind. Woola crouched behind him, looking shrunken and old.

"Sure," I said. "Or maybe beyond the next one, or the one after that."

"Beyond these ridges lie the Towers of Nandi. If your friends have fallen there, their sleep will be long-and ours as well."

It was two marches to the next ridge. By then the moon was high enough to illuminate the whole panorama from the crest. There was nothing in sight but ice. We camped in the lee of the crest, then went on. The suit was giving me trouble, unbalanced as it was, and the toes of my right foot were feeling the frost.

Sometime, about mid-afternoon, I noticed we"d veered off our route as if to skirt a mesa-like rock formation ahead. I registered a gripe about the extra mileage and proposed to get back to the direct route.

"Go if you will, Carl Patton. Perhaps I have not been fair to you, thus to indulge my personal taboo."

"What"s that supposed to mean?" I yelled at him. I was too beat to be diplomatic. He ignored the bad manners and turned to look at the mesa.

"Yonder rises Hel," he said. "I would prefer not to know the fate of my sisters and their young."

I did a "shucks, fella, I didn"t mean . . ." number, and we went on, following his detour. An hour or two later, Woola, scouting ahead, halted and began skirting something that looked like a low mound of snow. Then she whined and her ears and tail drooped. She turned and came back to put up a paw for Johnny Thunder to take while he patted the big s.h.a.ggy head. He went forward to look at what she"d found and I trailed along, wondering what it was that could make the old war-dog wilt like a whipped puppy. The giant had knelt to brush away snow, and when I came around him I saw the face, as beautiful as any ancient image of a love G.o.ddess, and on the same heroic scale; a young face, almost smiling, with a lock of red-gold hair across the n.o.ble ice-pale forehead. All of a sudden I was all out of wisecracks. Here was a beauty that wars could have been fought over, dead and frozen these hundred years. Too bad I didn"t have the magic spell that would waken her.

"Adainn was the youngest," the giant said. "Only a girl, barely of marriageable age. Now she is the bride of the ice, lying in his cold embrace."

"Good looking dolly," I said, and all of a sudden I felt a sense of loss that almost blacked me out. I heard myself saying "No, no! NO!" and struggling against Johnny"s big arm, barring my way, while Woola rose from her haunches, and took a position standing protectively over the corpse. After a while I was sitting in the snow, with water running out of my eyes and freezing, and big Johnny saying: "Be none ashamed, Carl. Any man must love her when he sees her, be he large or small."

I told him he was nuts, and got up and arranged my load, not looking at her somehow, for some reason, and then Johnny covered her face again, and said, "Fare thee well, my little sister. Now we must tend the living," and we went on. Johnny was more silent than usual all day, and in spite of the hot concentrates I sucked on the sly as I hiked, and the synthetic pep the hypospray metered into an artery, I was starting to feel it now. But not as badly as Big Johnny. He had a gaunt, starved look, and he hiked as though he had anvils tied to his feet. He was still feeding himself and the dog meager rations, and forcing an equal share on me. When he wasn"t looking I stuffed what I couldn"t eat in the disposal and watched him starve. But he was tough; he starved slowly, grudgingly, fighting for every inch.

He never complained. He could have gotten up and started back any time, with no apologies. He"d already made a better try than anyone could expect, even of a giant. As for me, all I had to do was picture that fat bank account, and all the big juicy steaks and big soft beds with beautiful women in them and the hand-tooled cars and the penthouse with a view all that cash was going to buy for me. As long as I kept my mind on that, the pain seemed remote and unimportant. Baird Ulrik could take it, all right. And after all, Big Boy was only human, like Woola and me, and as long as he could get up and go on one more time, so could I: I almost felt sorry for the big mutt, who went on just because she couldn"t imagine anything else to do, much less a fancy doghouse with plenty of bones but I stifled that. It was no time to be sentimental. At least, Big Johnny was no longer asking me those strangely embarra.s.sing questions of his. The big dope couldn"t even imagine treachery and betrayal. And to h.e.l.l with that, too.

That night, lying back of a barrier he"d built up out of snow blocks against the wind, he asked me a question.

"What is it like, Carl Patton, to travel across the s.p.a.ce between the worlds?"

"Solitary confinement," I told him.

"You do not love your solitude?"

"What does that matter? I do my job."

"What do you love, Carl Patton?"

"Wine, women, and song," I said. "And you can even skip the song, in a pinch."

"A woman waits for you?"

"Women," I corrected. "But they"re not waiting."

"Your loves seem few, Carl Patton. What then do you hate?"

"Fools,"" I said.

"Is it fools who have driven you here?"

"Me? n.o.body drives me anywhere. I go where I like."

"Then it is freedom you strive for. Have you found it here on my world, Carl Patton?" His face was a gaunt mask like a weathered carving, but his voice was laughing at me.

"You know you"re going to die out here, don"t you?" I hadn"t intended to say that. But I did; and my tone was savage to my own ears.

He looked at me, the way he always did before he spoke, as if he were trying to read a message written on my face.

"A man must die," he said.

"You don"t have to be here," I said. "You could break it off now, go back, forget the whole thing."

"As could you, Carl Patton."