The expression in Lesbee's face must have alarmed him, for he went on quickly, "Look, there's no need for you to conspire any more. What you really want is to go home, isn't it? Don't you see, with this new method of acceleration, we can make it to Earth in a few months!"

He stopped. He seemed momentarily uncertain.

Lesbee snapped angrily, "Who are you trying to fool? Months! We're a dozen light years in actual distance from Earth. You mean years, not months."

Browne hesitated then: "All right, a few years. But at least not a lifetime. So if you'll promise not to scheme against me further, I'll promise--"

"You'll promise!" Lesbee spoke savagely. He had been taken aback by Browne's instant attempt at blackmail. But the momentary sense of defeat was gone. He knew with a stubborn rage that he would stand for no nonsense.

He said in an uncompromising voice, "Mister Browne, twenty seconds after I stop speaking, you start talking. If you don't, I'll batter you against these walls. I mean it!"

Browne was pale. "Are you going to kill me? That's all I want to know. Look"--his tone was urgent--"we don't have to fight any more. We can go home. Don't you see? The long madness is just about over. n.o.body has to die."

Lesbee hesitated. What the big man said was at least partly true. There was an attempt here to make twelve years sound like twelve days, or at most twelve weeks. But the fact was, it was a short period compared to the century-long journey which, at one time, had been the only possibility.

He thought: "Am I going to kill him?"

It was hard to believe that he would, under the circ.u.mstances. All right. If not death, then what? He sat there uncertain. The vital seconds went by, and he could see no solution. He thought finally, in desperation: "I'll have to give in for the moment. Even a minute thinking about this is absolutely crazy."

He said aloud in utter frustration, "I'll promise you this. If you can figure out how I can feel safe in a ship commanded by you I'll give your plan consideration. And now, mister, start talking."

Browne nodded. "I accept that promise," he said. "What we've run into here is the Lorenz-Fitzgerald Contraction Theory. Only it's not a theory any more. We're living the reality of it."

Lesbee argued, "But it only took us a few hours to get to the speed of light."

Browne said, "As we approach light speed, s.p.a.ce foreshortens and time compresses. What seemed like a few hours would be days in normal time and s.p.a.ce."

What Browne explained then was different rather than difficult. Lesbee had to blink his mind to shut out the glare of his old ideas and habits of thought, so that the more subtle shades of super-speed phenomena could shine through into his awareness.

The time compression--as Browne explained it--was gradational. The rapid initial series of accelerations were obviously designed to pin down the personnel of the ship. Subsequent increments would be according to what was necessary to attain the ultra-speed finally achieved.

Since the drive was still on, it was clear that some resistance was being encountered, perhaps from the fabric of s.p.a.ce itself.

It was no time to discuss technical details. Lesbee accepted the remarkable reality and said quickly, "Yes, but where is Dzing?"

"My guess," said Browne, "is that he did not come along."

"How do you mean?"

The s.p.a.ce-time foreshortening did not affect him."

"But--" Lesbee began blankly.

"Look," said Browne harshly, "don't ask me how he did it. My picture is, he stayed in the cage till after the acceleration stopped. Then, in a leisurely fashion, he released himself from the electrically locked manacles, climbed out, and went off to some other part of the ship. He wouldn't have to hurry since by this time he was operating at a rate of, say, five hundred times faster than our living pace."

Lesbee said, "But that means he's been out there for hours--his time. What's he been up to?"

Browne admitted that he had no answer for that.

"But you can see," he pointed out anxiously, "that I meant what I said about going back to Earth. We have no business in this part of s.p.a.ce. These beings are far ahead of us scientifically."

His purpose was obviously to persuade. Lesbee thought: "He's back to our fight. That's more important to him than any damage the real enemy is causing."

A vague recollection came of the things he had read about the struggle for power throughout Earth history. How men intrigued for supremacy while vast hordes of the invader battered down the gates. Browne was a true spiritual descendant of all those mad people.

Slowly, Lesbee turned and faced the big board. What was baffling to him was, what could you do against a being who moved five hundred times as fast as you did?

7.

He had a sudden sense of awe, a picture ... At any given instant Dzing was a blur. A spot of light. A movement so rapid that, even as the gaze lighted on him, he was gone to the other end of the ship--and back.

Yet Lesbee knew it took time to traverse the great ship from end to end. Twenty, even twenty-five minutes, was normal walking time for a human being going along the corridor known as Center A.

It would take the Karn a full six seconds there and back. In its way that was a significant span of time, but after Lesbee had considered it for a moment he felt appalled.

What could they do against a creature who had so great a time differential in his favor?

From behind him, Browne said, "Why don't you use against him that remote landing control system that you set up with my permission?"

Lesbee confessed: "I did that, as soon as the acceleration ceased. But he must have been--back--in the faster time by then."

"That wouldn't make any difference," said Browne.

"Eh!" Lesbee was startled.

Browne parted his lips evidently intending to explain, and then he closed them again. Finally he said, "Make sure the intercom is off."

Lesbee did so. But he was realizing that Browne was up to something again. He said, and there was rage in his tone, "I don't get it, and you do. Is that right?"

"Yes," said Browne. He spoke deliberately, but he was visibly suppressing excitement. "I know how to defeat this creature. That puts me in a bargaining position."

Lesbee's eyes were narrowed to slits. "d.a.m.n you, no bargain. Tell me, or else!"

Browne said, "I'm not really trying to be difficult. You either have to kill me, or come to some agreement. I want to know what that agreement is, because of course I'll do it."

Lesbee said, "I think we ought to have an election."

"I agree!" Browne spoke instantly. "You set it up." He broke off. "And now release me from these tractors and I'll show you the neatest s.p.a.ce-time trick you've ever seen, and that'll be the end of Dzing."

Lesbee gazed at the man's face, saw there the same openness of countenance, the same frank honesty that had preceded the execution order, and he thought, "What can he do?"

He considered many possibilities, and thought finally, desperately: "He's got the advantage over me of superior knowledge--the most undefeatable weapon in the world. The only thing I can really hope to use against it in the final issue is my knowledge of a mult.i.tude of technician-level details."

But--what could Browne do against Lesbee?

He said unhappily to the other, "Before I free you, I want to lift you over to Mindel. When I do, you get his blaster for me.

"Sure," said Browne casually.

A few moments later he handed Mindel's gun over to Lesbee. So that wasn't it.

Lesbee thought: "There's Miller on the bridge--can it be that Miller flashed him a ready signal when my back was turned to the board?"

Perhaps, like Browne, Miller had been temporarily incapacitated during the period of acceleration. It was vital that he find out Miller's present capability.

Lesbee tripped the intercom between the two boards. The rugged, lined face of the first officer showed large on the screen. Lesbee could see the outlines of the bridge behind the man and, beyond, the starry blackness of s.p.a.ce. Lesbee said courteously, "Mr. Miller, how did you make out during the acceleration?"

"It caught me by surprise, Captain. I really got a battering. I think I was out for a while. But I'm all right now."

"Good," said Lesbee. "As you probably heard, Captain Browne and I have come to an agreement, and we are now going to destroy the creature that is loose on the ship. Standby!"

Cynically, he broke the connection.

Miller was there all right, waiting. But the question was still, what could Miller do? The answer of course was that Miller could pre-empt. And--Lesbee asked himself--what could that do?

Abruptly, it seemed to him, he had the answer.

It was the technician's answer that he had been mentally straining for.

He now understood Browne's plan. They were waiting for Lesbee to let down his guard for a moment. Then Miller would pre-empt, cut off the tractor beam from Browne and seize Lesbee with it.

For the two officers it was vital that Lesbee not have time to fire the blaster at Browne. Lesbee thought: "It's the only thing they can be worried about. The truth is, there's nothing else to stop them."

The solution was, Lesbee realized with a savage glee, to let the two men achieve their desire. But first-- "Mr. Browne," he said quietly, "I think you should give your information. If I agree that it is indeed the correct solution, I shall release you and we shall have an election. You and I will stay right here till the election is over."

Browne said, "I accept your promise. The speed of light is a constant, and does not change in relation to moving objects. That would also apply to electromagnetic fields."

Lesbee said, "Then Dzing was affected by the remote-control device I turned on."

"Instantly," said Browne. "He never got a chance to do anything. How much power did you use?"

"Only first stage," said Lesbee. "But the machine-driven thought pulses in that would interfere with just about every magnetic field in his body. He couldn't do another coherent thing."

Browne said in a hushed tone, "It's got to be. He'll be out of control in one of the corridors, completely at our mercy." He grinned. "I told you I knew how to defeat him--because, of course, he was already defeated."

Lesbee considered that for a long moment, eyes narrowed. He realized that he accepted the explanation, but that he had preparations to make, and quickly--before Browne got suspicious of his delay.

He turned to the board and switched on the intercom. "People," he said, "strap yourselves in again. Help those who were injured to do the same. We may have another emergency. You have several minutes, I think, but don't waste any of them."

He cut off the intercom, and he activated the closed-circuit intercom of the technical stations. He said urgently, "Special instruction to Technical personnel. Report anything unusual, particularly if strange thought forms are going through your mind."

He had an answer to that within moments after he finished speaking. A man's tw.a.n.gy voice came over: "I keep thinking I'm somebody named Dzing, and I'm trying to report to my owners. Boy, am I incoherent!"

"Where is this?"

"D--4--19.".

Lesbee punched the b.u.t.tons that gave them a TV view of that particular ship location. Almost immediately he spotted a shimmer near the floor.

After a moment's survey he ordered a heavy-duty mobile blaster brought to the corridor. By the time its colossal energies ceased, Dzing was only a darkened area on the flat surface.

While these events were progressing, Lesbee had kept one eye on Browne and Mindel's blaster firmly gripped in his left hand. Now he said, "Well, sir, you certainly did what you promised. Wait a moment while I put this gun away, and then I'll carry out my part of the bargain."

He started to do so, then, out of pity, paused.

He had been thinking in the back of his mind about what Browne had said earlier: that the trip to Earth might only take a few months. The officer had backed away from that statement, but it had been bothering Lesbee ever since.

If it were true, then it was indeed a fact that n.o.body need die!

He said quickly, "What was your reason for saying that the journey home would only take--well--less than a year?"

"It's the tremendous time compression," Browne explained eagerly. The distance as you pointed out is over 12 light-years. But with a time ratio of 3, 4 or 500 to one, we'll make it in less than a month. When I first started to say that, I could see that the figures were incomprehensible to you in your tense mood. In fact, I could scarcely believe them myself."

Lesbee said, staggered, "We can get back to Earth in a couple of weeks--my G.o.d!" He broke off, said urgently, "Look, I accept you as commander. We don't need an election. The status quo is good enough for any short period of time. Do you agree?"

"Of course," said Browne. "That's the point I've been trying to make."

As he spoke, his face was utterly guileless.

Lesbee gazed at that mask of innocence, and he thought hopelessly: "What's wrong? Why isn't he really agreeing? Is it because he doesn't want to lose his command so quickly?"

Sitting there, unhappily fighting for the other's life, he tried to place himself mentally in the position of the commander of a vessel, tried to look at the prospect of a return to view. It was hard to picture such a reality. But presently it seemed to him that he understood.

He said gently, feeling his way, "It would be kind of a shame to return without having made a successful landing anywhere. With this new speed, we could visit a dozen sun systems, and still get home in a year."

The look that came into Browne's face for a fleeting moment told Lesbee that he had penetrated to the thought in the man's mind.

The next instant, Browne was shaking his head vigorously. This is no time for side excursions," he said. "We'll leave explorations of new star systems to future expeditions. The people of this ship have served their term. We go straight home."

Browne's face was now completely relaxed. His blue eyes shone with truth and sincerity.

There was nothing further that Lesbee could say. The gulf between Browne and himself could not be bridged.

The commander had to kill his rival, so that he might finally return to Earth and report that the mission of the Hope of Man was accomplished.

8.