McNeil shrugged. "A hunting tribe--fishermen--"

"Where would they get the women and children?"

"The same way they get their men--recruit them in our own time. Or in the way lots of tribes grew during periods of stress."

Ross set down the water jug. "You mean, kill off the men, take over their families?" This was a cold-bloodedness he found sickening.

Although he had always prided himself on his toughness, several times during his training at the project he had been confronted by things which shook his belief in his own strong stomach and nerve.

"It has been done," McNeil remarked bleakly, "hundreds of times by invaders. In this setup--small family clans, widely scattered--that move would be very easy."

"They would have to pose as farmers, not hunters," Ross pointed out.

"They couldn't move a base around with them."

"All right, so they set up a farming village. Oh, I see what you mean--there isn't any village around here. Yet they are here, maybe underground."

How right their guesses were they learned that night when Ashe returned, a deer's haunch on his shoulder. Ross knew him well enough by now to sense his preoccupation. "You found something?"

"A new set of ghosts," Ashe replied with a strange little smile.

"Ghosts!" McNeil pounced upon that. "The Reds like to play the supernatural angle, don't they? First the voice of Lurgha and now ghosts. What do these ghosts do?"

"They inhabit a bit of mountainous territory southeast of here, a stretch strictly taboo for all hunters. We were following a bison track until the beast headed for the ghost country. Then Ulffa called us off in a hurry. It seems that the hunter who goes in there after his quarry never reappears, or if he does, it's in a damaged condition, blown upon by ghosts and burned to death! That's one point."

He sat down by the fire and stretched his arms wearily. "The second is a little more disturbing for us. A Beaker camp about twenty miles south of here, as far as I can judge, was exterminated just a week ago. The message was pa.s.sed to me because I was thought to be a kinsman of the slain----"

McNeil sat up. "Done because they were hunting us?"

"Might well be. On the other hand, the affair may have been just one of general precaution."

"The ghosts did it?" Ross wanted to know.

"I asked that. No, it seems that strange tribesmen overran it at night."

"At night?" McNeil whistled.

"Just so." Ashe's tone was dry. "The tribes do not fight that way.

Either someone slipped up in his briefing, or the Reds are overconfident and don't care about the rules. But it was the work of tribesmen, or their counterfeits. There is also a nasty rumor speeding about that the ghosts do not relish traders and that they might protest intrusions of such with penalties all around----"

"Like the Wrath of Lurgha," supplied Ross.

"There is a certain repet.i.tion in this which suggests a lot to the suspicious mind," Ashe agreed.

"I'd say no more hunting expeditions for the present," McNeil said. "It is too easy to mistake a friend for a deer and weep over his grave afterward."

"That is a thought which entered my mind several times this afternoon,"

Ashe agreed. "These people are deceptively simple on the surface, but their minds do not work along the same patterns as ours. We try to outwit them, but it takes only one slip to make it fatal. In the meantime, I think we'd better make this place a little more snug, and it might be well to post sentries as un.o.btrusively as possible."

"How about faking some signs of a ruined camp and heading into the blue ourselves?" McNeil asked. "We could strike for the ghost mountains, traveling by night, and Ulffa's crowd would think we were finished off."

"An idea to keep in mind. The point against it would be the missing bodies. It seems that the tribesmen who raided the Beaker camp left some very distasteful evidence of what happened to the camp's personnel. And those we can't produce to cover our trail."

McNeil was not yet convinced. "We might be able to fake something along that line, too----"

"We may have to fake nothing," Ross cut in softly. He was standing close to the edge of the clearing where they were building their hut, his hand on one of the saplings in the palisade they had set up so laboriously that day. Ashe was beside him in an instant.

"What is it?"

Ross's hours of listening to the sounds of the wilderness were his measuring gauge now. "That bird has never called from inland before. It is the blue one we've seen fishing for frogs along the river."

Ashe, not even glancing at the forest, went for the water jug. "Get your trail supplies," he ordered.

Their leather pouches which held enough iron rations to keep them going were always at hand. McNeil gathered them from behind the fur curtain fronting their half-finished cabin. Again the bird called, its cry piercing and covering a long distance. Ross could understand why a careless man would select it for the signal. He crossed the clearing to the donkeys' shelter, slashing through their nose halters. Probably the patient little beasts would swiftly fall victims to some forest prowlers, but at least they would have their chance to escape.

McNeil, his cloak slung about him to conceal the ration bags, picked up the leather bucket as if he were merely going down to the river for water, and came to join Ross. They believed that they were carrying it off well, that the camp must appear normal to any lurkers in the woods.

But either they had made some slip or the enemy was impatient. An arrow sped out of the night to flash across the fire, and Ashe escaped death only because he had leaned forward to feed the flames. His arm swung out and sent the water in the jar hissing onto the blaze as he himself rolled in the other direction.

Ross plunged for the brush with McNeil. Lying flat on the half-frozen ground, they started to work their way to the river bank where the open area would make surprise less possible.

"Ashe?" he whispered and felt McNeil's warm breath on his cheek as he replied:

"He'll make it the other way! He's the best we have for this sort of job."

They made a worm's progress, twice lying, with dagger in hand, while they listened to a faint rustle which betrayed the pa.s.sing of one of the attackers. Both times Ross was tempted to rise and try to cut off the stranger, but he fought down the impulse. He had learned a control of himself that would have been impossible for him a few months earlier.

The glimmer of the river was pale through the clumps of bushes which sometimes grew into the flood. In this country winter still clung tenaciously in shadowy places with cups of leftover snow, and there was a bite in the wind and water. Ross rose to his knees with an involuntary gasp as a scream cut through the night. He wrenched around toward the camp, only to feel McNeil's hand clamp on his forearm.

"That was a donkey," whispered McNeil urgently. "Come on, let's go down to that ford we discovered!"

They turned south, daring now to trot, half bent to the ground. The river was swollen with spring floods which were only now beginning to subside, but two days earlier they had noticed a sandbar at one spot. By crossing that shelf across the bed, they might hope to put water between them and the unknown enemy tonight. It would give them a breathing s.p.a.ce, even though Ross privately shrank from the thought of plowing into the stream. He had seen good-sized trees swirling along in the current only yesterday. And to make such a dash in the dark....

From McNeil's throat burst a startling sound which Ross had last heard in Britain--the questing howl of a hunting wolf. The cry was answered seconds later from downstream.

"Ashe!"

They worked their way along the edge of the water with continued care, until they came upon Ashe at last, so much a part of his background that Ross started when the lump he had taken for a bush hunched forward to join them. Together they made the river crossing and turned south again to head for the mountains. It was then that disaster struck.

Ross heard no birdcall warning this time. Though he was on guard, he never sensed the approach of the man who struck him down from behind.

One moment he had been trailing McNeil and Ashe; the next moment was black nothingness.

He was aware of a throb of pain which carried throughout his body and then localized in his head. Forcing open his eyes, the dazzle of light was like a spear point striking directly into his head, intensifying his pain to agony. He brought his hand up to his face and felt stickiness there.

"a.s.sha--" He believed he called that aloud, but he did not even hear his own voice. They were in a valley; a wolf had attacked him out of the bushes. Wolf? No, the wolf was dead, but then it came alive again to howl on a river bank.

Ross forced his eyes open once more, enduring the pain of beams he recognized as sunshine. He turned his head to avoid the glare. It was hard to focus, but he fought to steady himself. There was some reason why it was necessary to move, to get away. But away from what and where?

When Ross tried to think he could only see muddled pictures which had no connection.

Then a moving object crossed his very narrow field of vision, pa.s.sing between him and a thing he knew was a tree trunk. A four-footed creature with a red tongue hanging from its jaws. It came toward him stiff-legged, growling low in its throat, and sniffed at his body before barking in short excited bursts of sound.

The noise hurt his head so much that Ross closed his eyes. Then a shock of icy liquid thrown into his face aroused him to make a feeble protest and he saw, hanging over him in a strange upside-down way, a bearded face which he knew from the past.