A human owed it to another to rescue anyone in trouble.

Balanced on the edge of dilemma, he heard the shrill sound of anguish come again. This time it was followed by fluent cursing. He picked up only the trailing words of the imprecation.

": damn you beasts to Ajo! I will devour your livers! If you do not devour me first. Damn you all!"

That pushed Lan Martak back onto the track of honorable behavior. He felt a passing resentment that he had even considered failing to aid the other. He had to rescue the person in the grove. He couldn' t abandon anyone to the savage hunger of the wolves. He vividly remembered finding the remnants of an exploration team in the foothills of the el- Liot Mountains. Three men and a woman had been partially eaten by the filthy predators. He had the stomach of one who had seen much death in his travels, but those gnawed corpses sickened him more than he had ever admitted to a soul. It would be impossible for him to now let another fall in that identical way if he could aid him.

That renewed desire to succor didn' t cause Lan to rush in foolishly, however. He picked up a pair of the driest limbs, wrapped cobwebs of desiccated moss around each, then thrust them into his dying fire. In a few seconds, he carried two flaming torches to frighten away even the boldest of wolves.

He made his way to the thicket, glad for the added light cast by the flambeaux. The depths were veiled in impenetrable shadow; he made out only the dim outlines of the skulking wolves.

" Away, I say! Aieeeeee! My leg! You repulsive four- legged menace!" came the cries of rage and pain from the denseness. A large wolf flew through the air to smash into a tree bole several feet beyond Lan. Surprised, he turned and saw the creature' s crushed body sprawled bonelessly at the base of the tree. Whoever fought inside the thicket did a noble job of it. To bodily throw so heavy a wolf required strength far beyond Lan' s.

But he knew that a wolf pack, if hungry enough, would tackle even a ferocious jann- pard and chevy it to death. First one snarling wolf would attack, only to be driven back. While it retreated, another wolf would attack. And then another. As they backed away, still others would leap and bite until the prey fell exhausted.

Lan cautiously entered the dense thicket, holding his torches high above his head. His eyes adjusted to the flickering light. He counted on the wolves' eyes taking even longer to adapt. In that short time, he had to attack and, with luck, so would the pack' s prey.

" I' m going to rescue you," he shouted. " Don' t worry. I' ll help you get free of the wolves." He crashed through low tangle of heavily thorned brush until he came to a small clearing. Voicing a wordless scream, he momentarily distracted the circling wolves. A savage lunge with his knife disemboweled one careless enough to turn and attack without first studying its intended victim. His torches were knocked from his hand by the leap of another; then he heard the soul- chilling howl of pain and anguish. The wolf had set itself on fire. As it ran from the clearing, it emitted sparks like some child' s unsupervised fireworks.

The other wolves milled about, the thrust of their attack now parried. Lan charged another wolf, one easily waist high. Because he held a retrieved torch in front of his body, he forced the animal to circle directly into his blade. Others seemed disinclined to press the attack now that their prey had an ally.

" Are you all right?" Lan bellowed to his still hidden companion in arms against the wolf pack.

" Damn, it is such a sorry state I am in! And you, you fool! Watch how you use that torch. You are sure to set me afire!"

" Don' t worry about that, worry about the wolves."

" Pah! These animals are nothing. But what if you set fire to my legs? How should I fight something as terrible as that?"

" Just roll around on the ground, dunce!" Lan had little time to argue. These wolves proved themselves more determined than any he had encountered on his own world. Either they were starved or, as their harsh yellow eyes hinted, they possessed more than a rudimentary intelligence. It was nothing less than a miracle that anyone fended these creatures off, and here his companion had nothing better to do than complain about the careless use of his torch. " Easy for you to say, you stupid human." Lan Martak stopped dead. A quick toss of the torch ignited still another wolf and sent it screeching into the night, a living funeral pyre. The last statement from the rescued party struck him as being so peculiar that Lan felt he must investigate immediately. He turned, facing the voice. As the torch flickered out its dull light, he saw revealed a huge hairy- legged spider, cowering away from the flames.

" Get away from me with that torch, I say! You will do me grievous harm if you get too careless." The spider seemed to be the source of the voice. Lan wondered if he had somehow become embroiled in a nightmare and no longer separated reality from dream.

He mentally checked all the clues assailing his senses. The torch crackled and popped brightly in his hand, and warmed him. Hot resins from the wood seeped forth and dripped painfully onto his flesh. The smell of the burning wood and charred wolf- flesh told him he received the very spoor expected. His mouth felt as dry as a boll of cotton from fear and adrenaline. His boots squished from dampness- if this were a dream, why didn' t he simply wish them dry?

" Are you all right?" he asked lamely.

" Of course I am," declared the spider indignantly. " I am quite able to take care of myself. Not that it matters," came the voice, self- pitying now. " I am nothing. Nothing!"

Lan imagined salty tears welling at the corners of huge, unseen eyes. Deciding his back was too vulnerable, he circled to his right, holding the torch in front of his body for protection. A largetrunked tree soon pressed, rough and reassuring, into his spine. To his immediate right loomed a tangle of iron- grey berries, the thorns on the bush dripping poisonous ichor. His left flank remained open as was the area directly before him. Only when his defense seemed adequate did Lan allow suspicious eyes to scan the monstrous spider squatting in front of him.

Had he been at home, he would have thought someone played a joke on him by constructing this overlarge spider with the matted fur legs and lumpy body. He wasn' t at home; this wasn' t a joke.

" Who are you?" he asked, barely able to trust his voice.

" I am Krek- k' with- kridike," came the voice again. " You may call me Krek. Humans never get the second syllable out properly." An odd chitinous clicking noise echoed from the dancing shadows surrounding the spider.

" What manner of beast are you? I' ve never seen a spider so huge before."

" Indeed." The spider sniffed. " You must be one of the provincials from this world. Little wonder you have never seen a mountain arachnid from the upper fastness of the Egrii Mountains."

The spider jumped forward with startling speed. The hairy ropes on each side of the central mass that Lan ascribed to tree roots stiffened to lift the creature upward. He took a deep breath as he studied the towering beast. It was easily half again as tall as he, and Lan measured as a giant among the lowlanders. The hairy legs spanned a full five paces, and the body suspended at the juncture of those copper- wire- studded appendages weighed at least as much as Lan.

To fight such a beast would be foolhardy. Besides, he had rescued it from the wolves. It should be grateful.

" Either set fire to my legs"- a visible shudder rippled through the creature at the mention-" or hold the torch away. There. Thank you. I see now that you are indeed human." Again the odd sigh. " Long have I fled your kind on this world. No longer. I am so weary. Come. Kill me."