"Have to find a place to cross!" panted the captain.
Vezzarn looked back at the long shadow-shape of the Venture in the valley below and behind them. "If we climb down there, sir," he argued, "we can't see them when they come out! We won't have any warning. "
"They won't be out for a while," Hulik told him. "We've been walking only ten minutes so far."
They turned left along the edge of the ravine. Perhaps half a mile ahead was a great rent in the side of the mountain, glowing with the dim light of the red sun. Cross a few more such rises, the captain thought, then turn right to a point from where they could still see Yango when he came tracking them with the robot. As soon as their pursuers had followed the trail down into his maze of ravines, they'd have their long headstart back to the ship...
They came to a place where they could get down into the ravine, hanging to hard, springy ropes of a thick vine-like growth for support. They scrambled along its floor for a couple of hundred yards before they reached a point where the walls were less steep and they could climb out on the other side. Level ground again, overlooking the valley; they began glancing back frequently at the dim outline of the ship. Something followed them for a stretch, uttering short, deep hoots, but kept out of sight among the rocks. Then another ravine cutting across their path. As they paused at its edge, glancing up and down for a point of descent, Vezzarn exclaimed suddenly, "He's opened the lock!"
They looked back. A small sharp circle of light had appeared near the Venture's bow. They hurried on.
The light glowed steadily in the hazy dimness of the valley for about two minutes. Then it vanished. "Could he gave found a way to seal the lock against us?" Hulik's tone was frightened.
"No. Not from outside," the captain said. "I have the only key that will do that. I think he's cut off the light in the control section before leaving; he doesn't want to attract too much attention to the ship... "
Hulik was staring down at the Venture. "I think I see something there!"
The others saw it, too, then. A small, pale green spark on the ground this side of the ship. It appeared to be moving along the route they had taken.
"That could be the robot!" Vezzarn said, awe in his voice.
It might have been. Or some searchlight Yango was carrying. But there wasn't much doubt now that they were being tracked.
As they turned away, Hulik exclaimed, "What was that?"
They listened. It had been a sound, a distant heavy sound such as might have been uttered, miles up the valley, by some great, deep-voiced bell or gong. It seemed a very strange thing to hear in a place like this. It died slowly. Then, after moments, from a point still farther off in the mountains, came a faint echo of the same sound. And once more, still more remote, barely audible.
They were down in the next ravine minutes later, and had worked almost up to the point where spilling dim sunlight flushed a wide cleft in the mountain's flank before they again reached a level from where they could look into the valley. Nothing showed in the sections they could see; and they began doubling back in the shadow of the cliffs to reach a point to the right of their line of approach. Lungs and legs were tiring now, but they moved hurriedly because it seemed possible Yango and his killing machine already had entered the area of broken sloping ground between them and the valley and were coming along their trail through one of the lower ravines.
And then, lifting over a rocky ridge much closer than the ones they'd been watching for it, was a pale green shimmer of light and the spider robot came striding into view. The captain saw it first, stopped the others with a low, sharp word. They stood frozen, staring at it. It was a considerable distance below them but in all not more than three hundred yards away.
It had come to a halt now, too, half turned in their direction; and for a moment they couldn't know whether it had discovered them or not. The green light came from the sides of the heavy segmented body, so that it stood in its own glow. Yango became visible behind it suddenly, came up close to its side. The robot crouched, remained in that position a few seconds, then swung about and went striding along the ridge, the great jointed legs carrying it quickly, smoothly, and with an air of almost dainty lightness in spite of its heavy build. Just before it vanished beyond an outcropping of rock, they could see the man was riding it.
It explained how the pair had followed their trail so swiftly. But now--
"Skipper," Vezzarn's voice said hoarsely from fifteen feet away, "don't move, sir! I'm pointing my gun at you, and if you move, I'll fire. You stand still, too, for a moment, Miss do Eldel. I'm doing this for both of us so don't interfere.
"Skipper, I don't want to do this. But the Agandar is after you and the little Wisdom. He doesn't care about Miss do Eldel or myself... Miss do Eldel, I'm throwing you my knife. Cut the ropes from Dani and put her down. Then tie the skipper's hands behind him. Skipper, if you make a wrong move or don't let her tie your hands, I'll blast you on the spot. I swear it!"
"What good will that do?" Hulik's voice asked tightly from behind the captain.
"You saw them!" There was a brief clatter on the rocky ground to the right as Vezzarn's knife landed there. "You saw how fast it is. The thing's tracking us so it's moving off again. But it will reach this spot in maybe five, six minutes. And the Agandar will see the skipper and Dani lying here. We'll be gone and he won't bother with us. Why should he? All he'll want is to get away with the two of them again--"
The captain spun suddenly, crouching down and jerking the gun from his pocket. He didn't really expect to gain anything from it except to hear the snarl of Vezzarn's blaster, and perhaps that of Hulik's. Instead there came a great strange cry from the air above them, and a whipping swirl of wind. They saw a descending shadow; an odd round horned head on a long neck reaching out behind Vezzarn. The three guns went off together, and the flying creature veered up and away in a sweep that carried it almost beyond sight in an instant. Its wild voice drifted back briefly as it sped on into the hazy upper reaches of the valley and Vezzarn, turning quickly again, saw two guns pointed at him, let out a strangled squawk, bounded sideways and scrambled and slid away down the rocky slope. He ducked out of view behind a thicket. In a moment, they heard his retreat continue rapidly, farther on from there.
"Well," Hulik said, lowering her gun, "Old Horny really broke up the mutiny! What do we do now? Do you have any ideas except to run on until the Spider comes walking up behind us?" She nodded down the slope. "Unless, of course, Vezzarn's done us a favor and it turns off after him there. Happy thought!"
The captain shook his head. "It won't," he said, rather breathlessly. "Yango talks to it. He'll know the trail has split and can work out who went where... " Goth was squirming around uncomfortably on his back; he got her adjusted a little until she clung firmly to him again, with a grip as instinctive as a sleeping young monkey's. If Yango had heard the commotion and turned his Sheem Assassin up towards it, they might have less than five minutes before the robot overtook them. But no one had screamed, and blasters weren't audible at any great distance. It should have sounded like simply another manifestation of local life, one to be avoided rather than investigated.
In which case Vezzarn, in his terror, had overrated the Spider's pace. It should be close to fifteen minutes, rather than five or six, before it approached again, striding with mechanical smoothness along their trail. Even so, it was reducing the distance between them much too quickly to make it possible to get back to the Venture before it caught up.
"There is something else we can do," he said. "And I guess we'll have to try it now. I was hoping we wouldn't. It'll be a risky thing."
"What isn't, here?" Hulik said reasonably. "And anything's better than running and looking back to see if that Sheem horror is about to tap us on the shoulder!"
"Let's move on while I tell you, then," the captain said. "Vezzarn's right, of course, about Yango not caring too much about you two. He wants Dani. And he wants what I've got here." He tapped the pocket containing the package of small but indispensable items they'd removed from the Venture just before leaving. "He can't use the ship without it. And he'll figure I'm hanging on to that. And to Dani."
"Right," Hulik nodded. The captain pulled the package from his pocket.
"So if the trail splits again here," he said, "I'm the one the Spider will follow."
Hulik looked down at the package. "And what will I do?"
"You'll get down to the ship with this. There are a few separate pieces I'll give you; you'll need them all. Get them fitted back in and get the ship aloft. We'll have Yango pinned then. With the nova guns--"
Something occurred to him. "Uh, you can handle spaceguns, can't you?"
"Unfortunately," Hulik said, "I can not handle spaceguns. Neither can I get a ship like that aloft, much less manoeuvre it in atmosphere. I doubt I could even fit all those little pieces you're offering me back in where they belong."
The captain was silent.
"Too bad Vezzarn panicked," she told him. "He probably could do all that. But, of course, the Spider would kill you, and Yango would have Dani, anyway, before Vezzarn even reached the ship."
"No, not necessarily," the captain said. "I've got something in mind there, too... Miss do Eldel, you could at least get into the ship and close it up until--"
"Until Yango and the robot come back and burn out the lock? No, thanks! And it isn't just those two. You know something else has followed us up here, don't you?"
The captain grunted. He'd known the slopes had remained unquiet throughout, and in a very odd way. After the first few encounters, nothing much seemed astir immediately around them. But, beginning perhaps a hundred yards off, above, below, on both sides-there'd been, as they climbed higher and threaded their way along the ravines, almost constant indications of covert activity. A suggestion of muted animal voices, the brief clattering of a dislodged stone, momentary shadowy motion. Not knowing whether his companions were aware of it or not, he'd kept quiet. A Sheem Spider seemed enough for anyone to be worrying about...
"Little noises?" he asked. "Things in the thickets?"
"Little noises," Hulik nodded. "Things in the thickets. This and that. We're being followed and watched. So is Yango. He's had more than one reason, I think, for staying on the back of his Assassin most of the time."
"Whatever those creatures are, they've kept their distance," the captain said. "They don't seem to have been bothering Yango either."
"Almost anything would keep its distance from the Spider!" Hulik remarked. "And perhaps it's your little witch who's been holding them away from us. I wouldn't know. But I'm sticking close to you two while I can, that's all... So what do you have in mind to do about Yango?"
The captain chewed his lip. "If it doesn't work," he said, "the Spider will have us."
"I should think so," Hulik agreed.
He glanced at her, said, "Let's turn back then. We're going in the wrong direction for that."
"Back along our trail?" Hulik said as they swung around.
"A couple of hundred yards. I noticed a place that looked about right. Just before we saw the robot." He indicated the cliffs looming over them. "It'll take pretty steep climbing, I'm afraid!"
"Up there? You're not counting on outclimbing the Spider, are you?"
"No. It should be able to go anywhere we can, faster. "
"But you've thought of a way to stop it?"
"Not directly," said the captain. "But we might make Yango stop it… or stop Yango."
There'd been a time when something had nested or laired on the big rock ledge jutting out from the cliff face and half overhung by it. Its cupped surface still held a litter of withered vegetation and splintered old bones, along with the musty smell of dried animal droppings. A narrow shelf zigzagging away to the right along the cliff might have been the occupant's means of access.
Winded and shaking, stretched out full length in the ancient filth, the captain hoped so. Almost any way down from here, except dangling from the jaws or a taloned leg of the Sheem Spider, must be better than the way they had come up. Peering over one corner of the ledge, he stared back along that route. About a hundred and twenty yards of ascent. From here it looked almost straight down and he wondered briefly again how they'd made it. In a kind of panicky rush, he decided, scrabbling for handholds and toeholds, steadying each other for an instant now and then when a solid-looking point crumbled and powdered as human weight came on it, not daring to hesitate or stop to think, to think, in particular, of the distance growing between them and the foot of the cliff below. And then he'd given the do Eldel's smallish, firm rear a final desperate boost, come scrambling up over the corner of the ledge behind her, and collapsed on the mess half filling the wide, shallow, wonderfully horizontal rock crop.
They unroped Goth from him then, and laid her down against the cliff under the sloping roof of the ledge. She scowled and murmured something, then abruptly turned over on her side, drew her knees up to her chin, and was gone and lost again, child face smoothing into placidity, in the dream worlds of Yango's special drug. He and Hulik stretched out face down, one at each comer of the big stone lip, holding their guns, peering from behind a screen of the former occupant's litter at the shadowy thickets and boulders below.