The energy crackled, died. I realized uneasily that I had now exhausted the laser charge. They was another cartridge in my supply belt, but whether I would have time to recharge—

I had never believed my reaction or my senses more acute than those of most other men. But, almost without thinking, I made a swift leap to the left. Yet I did not wholly escape the menace which had crept on me from behind. An arm flung out half-tripped me. I staggered, keeping my balance only by happy chance. And I saw that Griss had crawled on hands and knees to attack. But whatever small spark of strength had supported him now failed. He collapsed again, face down—though the length of his alien body twitched and shuddered, as if muscles fought will, will flesh and bone in return.

So I edged backward at an angle to give me vision of both the three by the wall and those they possessed. There was a writhing among the latter, as if they fought to get to their feet yet could not summon strength enough. As far as I could see, those who believed themselves masters had not changed position, save that they no longer raised their hands with the round objects I suspected were weapons. Instead those arms hung limply by their sides.

Then he who wore Lidj's body toppled forward, crashing to the hard stone of the floor, making not the least attempt to save himself. And the other two followed. As they did so, that tortured movement among their slaves was stilled. I could have been standing among dead.

"Vorlund!" Foss and Borton both shouted my name so that it sounded as a single word.

I looked around to see them at the cavern entrance. And I believe they, too, thought I had fought a fatal battle. For Borton hurried forward, went down on one knee beside the inert form of Harkon, then, having laid hand on the shoulder beneath that black covering, looked to the three by the far wall.

"What did you do?"

"Used laser shock." I holstered the weapon I still held.

Foss was beside Lidj. "Dead?" he asked, but he did not look at me.

"No."

They went on to the three by the wall, stopped to turn those over so they lay on their backs. Their eyes were open, but there was no hint of consciousness. It was as if the essence of the alien personalities had withdrawn—or else—

I had gone to look at them, too. Now I wondered. Could that shock have brought about a switchover? If so—or in any case—we should have both sets of men under guard before they returned to consciousness. I said so.

"He's right." Borton, rather than Foss, backed my suggestion. He produced a tangler, used it with efficiency. First he bound the three by the wall, then he attended to those in the alien bodies, putting all the others of that band under restraint as well for good measure. In addition the three aliens were given stiff injections to keep them unconscious—or so we hoped.

We were masters now of the jack headquarters, though we put out sentries and did not accept our victory as total. There was too good a chance of others' still occupying the ship or the burrows. And the whole nature of this site was such as to make a man very wary of his surroundings, only too ready to hear strange noises, start at shadows, and the like.

We made use of the bubble in the cavern as a prison, stowing there our blacked-out prisoners. Borton used the jacks' com to summon the rest of his men from the outer valley. The energy which sustain pills, and E rations had given us was ebbing. This time we did not try to bolster it. Rather we took turns sleeping, eating rations we found in the camp.

There was evidence that the jacks had been here for some time. Signs, too, by deep flare burns left on the valley floor, that there had been more than one ship landing and take-off over a period of perhaps a year, or longer, planet time. But after sleep-gas globes had made the ship ours, we discovered very little more of the setup which had been made to market the loot or otherwise do business off-world—there were only faint clues for the Patrol to follow up!

Our prisoners did not revive quickly and Thanel was loath to use medical means to induce consciousness. Too little was known of the stresses to which they had recently been subjected. In all there were some twenty jacks, and the men of our own party which had been taken—including Hunold. And our only safe control on the alien three was to make sure they could not use their esper powers.

Thanel ordered these three, plus their alien bodies, to be put in a separate division of the tent. There he spent most of his waking time keeping them under observation. They still breathed, all six of them. And the detect showed a life signal whenever he used it on them. Yet the vital processes were very slow, akin to the state of one in stass-freeze. And how this state could be broken, he admitted he did not know. After a certain time had passed he even experimented by taking off his protect cap (having first stationed a guard to watch him and move in at the first hint he might be taken over) and trying to reach them via esper means—with no result.

I had fallen asleep. And I did not know how long it was before I was shaken awake again. Foss was the one who had so abruptly roused me.

"Thanel wants you," he said tersely.

I crawled out of the pheno-bag I had found in the camp. Foss was already heading into the open where the darkness of night had largely concealed the standing ship.

But it was not the chill of the night wind probing now and then into the cavern which set me shivering as I watched him go. I have known loneliness in my life. Perhaps the worst was when I realized on Yiktor that I might never return to my human body, that it was possible I might be entrapped for years in animal form. Then I had literally gone mad, striking out into the wilderness, allowing the remnant of beast in me to take over from the human which had been transplanted. I had run, I had killed, I had skulked, I had– Today I cannot remember all that happened to me, nor do I wish to. That was loneliness.

And this—this was loneliness of another type. For in that moment when Captain Foss walked away I saw the wall which was between us. Had the building of that wall been of my doing? Perhaps, though looking back, I could not deny that given the same choices I would have done no differently. Yes, I was no longer of the Lydis. I could ship out on her, do my duty well, maybe better than I had a year ago. But for me she was no longer the sole home a Free Trader must have.

What had happened? I was as lost as I had been when running four-footed across the fields of Yiktor. If I was not Krip Vorlund, Free Trader born, who wanted nothing more than a berth on the Lydis, then who was I? Not Maquad—I felt no closer kinship with the Thassa than I did with the crew; even less.

I was alone! And I shuddered away from that realization, getting to my feet, hurrying to obey Thanel's summons, hoping to find forgetfulness in this task, if only for a short time.

The medic was waiting for me as I came into that inner section where the six bodies still lay on the floor, looking just as they had when I had helped to bring them in. But Thanel had the appearance of a man who had not had any rest. And to my surprise he was not alone.

Lukas, whom I had last seen lying in tangle cords, stood beside him. It was he who spoke first.

"Krip, you are the only one of us who has been through body switch. The Thassa do it regularly, do they not?"

"I don't know about doing it regularly. Anyone who wishes to train as a Moon Singer does it. But there are only a limited number of Moon Singers. And so it may not be well known to the others. They have their failures, too." My own present body was witness to that, if one was needed.

"The question is, how do they do it?" Thanel came directly to the point. "You have been through it and witnessed it done for that maelen of yours. Do they use some machine, drug, type of hypnotism—what?"