Convergent Series (6 page)

The first part of the flight to Quake was conducted in total silence. Once it was clear that Hans Rebka was insistent on going and could not be dissuaded, all Perry's energy had vanished. He sank into a strange lethargy, sitting at Rebka's side in the aircar and staring straight ahead. He roused briefly when they came to the foot of the Umbilical, but only long enough to lead the way to a passenger
capsule and initiate the command sequence for ascent.

Seen from sea level the Umbilical was impressive but not overwhelming. It appeared to Rebka as a tall slender tower of uniform thickness, maybe forty meters across, stretching from the surface of Opal's ocean at the lower end up into the thick and uniform cloud layer. The main trunk of the structure was a silvery alloy, up and down which passengers and cargo could move in huge cars. The attachments were electromagnetic, held and driven by linear synchronous motors. The detailed design might be unfamiliar, but Rebka had seen the concept used on a dozen worlds, carrying people and materials up and down multikilometer buildings, or high into orbit. The knowledge that there were over two kilometers more of the Umbilical below sea level, reaching down to a tether on the ocean floor, was more surprising, but the mind could accept it.

What the mind—or Rebka's mind at least—could not so readily accept was the twelve
thousand
kilometers of the Umbilical above the clouds, reaching all the way from Opal to Quake's parched and turbulent surface. The observer who climbed into a capsule was seeing less than one ten-thousandth of the whole structure. With a maximum free-space car speed of a thousand kilometers an hour, travelers would expect to see two sunrises on Quake before they got there.

And now they were on their way.

The capsule was as tall and broad as Opal's biggest buildings. As the Builders had left it, the inside was one large empty space. Humans had added interior floors, from a massive cargo hold at the bottom to the control-and-observation chamber at the top.

The car's motors were silent. All that could be heard as they rose smoothly through the cloud layer was a whistle of air and the mutter of atmospheric turbulence. Five seconds more, and Hans Rebka had his first view of Quake as seen from Opal. He heard Max Perry grunt at his side.

Maybe Rebka grunted, too. For Opal's permanent cloud layer suddenly seemed like a blessing. He was glad that the other planet had been hidden when he had been down on Opal's surface.

Quake stood huge in the sky, a sunlit, mottled ball that was poised and ready to crash down onto him. His hindbrain told him that no force in the universe could hold such a weight, that one would never become used to the sight. At the same time his forebrain did a calculation of orbital rates and the matching of centrifugal and gravitational forces, and assured him that everything was in perfect dynamic balance. People might be uncomfortable with the threat of Quake overhead for a day or two; then they would get used to it and ignore it.

From this distance no details were visible, but it was clear that he was looking at a world without major seas and oceans. Rebka thought at once of terraforming; not just Quake or Opal, but of the doublet together. It was the perfect application. Quake had the metals and minerals; Opal had the water. It would be a substantial task, but no bigger than others he had undertaken. And the beginning of the necessary transportation system was already in position.

He looked along the thread of the Umbilical. The line upward was visible for perhaps a hundred kilometers before he lost it. Midway Station, four thousand kilometers above them at the center of mass of the Opal-Quake system, could be seen as a tiny golden knot on an invisible thread. They would be there for changeover in half a day. Plenty of time to think.

And plenty to think about.

Rebka closed his eyes and sorted through his worries.

Begin with Max Perry. After only a couple of days of exposure to the man it was clear that there were two Max Perrys. One was a quiet, dull bureaucrat, someone whom Rebka would expect to find in a dead-end job on any rat-hole world in the Phemus Circle. But somewhere under that there was a second personality, an energetic and subtle person with strong ideas of his own. The second Max Perry seemed to wake only on random occasions.

No, that was wrong. The other Max awoke when Quake was the issue, and only then. And Max II must be the clever and determined man that Perry had been, all of the time, seven years before—when he was assigned to Dobelle.

Rebka leaned back in his seat, physically relaxed and mentally active. So. Accept that there was a mystery in Max Perry. But ask if that mystery justified pulling a senior, action-oriented man like Hans Rebka away from a key project involving exploration of Paradox to become an amateur psychologist on the minor world of Opal.

It did not add up. If the men and women who ran the Phemus Circle were good at anything, it was at conserving resources; and human resources were the most precious of all.

Look for another motive, another reason for his being assigned there.

Rebka was not naive enough to believe that his superiors would tell him the whole story behind his assignments. They might not even
know
the whole story. He had found that out the hard way, on Pelican's Wake. A troubleshooter was expected to be able to operate without a full deck, and Rebka functioned best when he was forced to work things out for himself.

Terraforming of Quake and Opal?

His superiors must know that as soon as he saw the planetary doublet of Dobelle he would evaluate both worlds as possible subjects for terraforming. Was that the real reason he had been assigned there? To set in motion that project?

Still it did not feel right.

So add in some of the other variables. Four groups were requesting a visit to Quake at Summertide. He might believe that one was a genuine coincidence—the Alliance Council had no reputation for deceit—but four at once was not plausible.

And the upcoming Summertide would be the biggest ever. Maybe that was the key. They were there for that special Summertide.

Again, it did not feel complete. Darya Lang had told him that she did not know it was to be a specially big Summertide until Perry had told her.

Rebka believed her. But that belief itself was suspect. He had left a woman companion behind him on the station orbiting Paradox. No matter what his brain told him, his glands were probably seeking a replacement. In the first two minutes with Lang he had been aware of an attraction between them. And that must make him more cautious in dealing with her, since he
wanted
to believe her.

Lang did not know that Opal and Quake were scheduled for monster Summertides. Fine. Believe that, and still it did not mean that she was what she pretended to be. She could have another and more complex role to play.

Was she what she claimed to be? That could be checked. Before he left Starside, Rebka had already sent an encrypted message through the Bose communications net, asking for confirmation by Circle intelligence that Darya Lang was an expert on Builder artifacts. The reply would be waiting when they returned from Quake. Until then, questions regarding Lang had to be put to one side.

But there were plenty of other questions left. Hans Rebka was interrupted by a light touch on his arm. He opened his eyes.

Max Perry was gesturing upward, along the line of the Umbilical. Quake loomed above them, half again as big as when they had started. But at the moment it reflected only the murky dried-blood light of Amaranth. Mandel was hidden behind the planet, and as Summertide approached, its dwarf companion was swinging in closer. Soon night would disappear completely on Quake and Opal.

"What's happening?" Rebka said. "I thought the Umbilical ran all the way between Opal and Quake." He should have been a little nervous, because it was sheer vacuum outside the car; but Perry had a smile on his face, and he certainly did not act like a man facing disaster.

"It does," he said. "We're approaching the Winch. We have to be shunted here, and reconnected on the other side of Midway Station. Travelers can go into the station if they want to—it's well equipped, power and food and shelter—but I see no point in that. If you like we can take a closer look at Midway on the way back."

As Perry spoke, the car they were riding in was swinging away from the main cable and running through a series of gates and connecting rails. Quake had vanished. Midway Station was off to the right. Rebka could see a whole line of ports, any one of them big enough to accept the capsule. He looked back to the place where the main cable of the Umbilical disappeared into bright blue nothingness and then, a few kilometers farther on, reappeared.

"I don't see any winch."

"You won't." The second Max Perry was back, alert and energetic. "That's just a name we give it. You see, Opal and Quake are in a near-circular mutual orbit, but their separation distance varies all the time—anything up to four hundred kilometers. A permanent Umbilical can't work unless you have something to reel in or pay out cable. That's what the Winch does."

"That hole in space?"

"Right. It works fine, and at Summertide it reels in extra so that the coupling is lost at the surface of Quake. And it's smart enough to leave the tether on Opal intact. But it's all Builder technology. We have no idea where the cable goes to or comes from, or how it knows what to do. People on Quake and Opal don't care, so long as they can raise or lower the Umbilical through the special control sequences."

Perry's reluctance to visit Quake had vanished at liftoff from Opal. He was peering forward as they rounded the bulk of Midway Station, seeking Quake again in the sky ahead.

The capsule moved back to attach to the new length of the Umbilical, and they began to pick up speed. Soon they passed the mass center of the Dobelle system, and there was a clear sense of falling toward Quake, their own centrifugal force adding to Quake's gravity. The dark planet grew visibly, minute by minute, in the sky ahead of them. They began to see more surface detail.

And Rebka could see another change in Perry. The younger man's breathing was faster. He was staring at Quake's approaching surface with rapt attention, his eyes bright and staring. Rebka was willing to bet that his pulse rate had increased.

But what was down there? Rebka would have given a lot to see Quake through Max Perry's eyes.

Quake had no sea-sized water bodies, but it did have plenty of rivers and small lakes. All around them grew the characteristic dark-green and rust-colored vegetation. Most of it was tough and prickly, but in certain places there flourished a cover of lush ferns, soft and resilient. One of those areas was on the biggest lake's shore, not far from the foot of the Umbilical. It was a natural place for a person to sink down and rest. Or for two people to find other pleasures 
 

Amy was talking, her voice breathless in his ear. "You're the expert, aren't you?" 
 

"I don't know about that." He sounded lazy, relaxed. "But I probably know as much about this place as anyone." 
 

"Same thing. So why won't you bring me here again? You could, Max, if you wanted to. You control the access." 
 

"I shouldn't have brought you here at all." 
 

The feeling of power. He had done it originally to show off his new authority, but once on the planet there were other and better reasons. Quake was still safe, still far from Summertide, yet already there was volcanic dust high in the atmosphere. The evenings, flaming in every eight hours, were an unspeakable beauty of red, purple, and gold. He knew of nothing like it in the rest of the universe—nothing he had read, nothing he had heard rumored. Even with his eyes closed, he would still see those glorious colors. 
 

He had wanted to show it off to Amy—and he did not want to stop looking himself, not just yet. He lay on his back, gazing up past the shattering sunset to the brightening disk of Opal. By his side,
A
my had broken off one of the soft fronds of fern and was tickling his bare chest. After a few moments she moved over him, blocking his view of Opal and gazing down at him with wide, serious eyes.
 

"You will, won't you? You will, you definitely will. Say you will." 

"Will what?" He was feigning incomprehension. 
 

"Will bring me here again. Closer to Summertide." 
 

"I definitely won't." He rolled his head from side to side on the soft ferns, too lazy to lift it fully. He felt like the king of the world. "It wouldn't be safe, Amy. Not then." 
 

"Not at Summertide. I get out well before that, while it's still safe. Nobody stays here then." 
 

"So I could leave with you, when it's still safe. Couldn't I?" 
 

"No. Not near Summertide." 
 

Amy was moving her body down toward him, as the last light bled from the air of Quake. He could no longer see her face. It had faded with the dying light. 
 

"I could." Her lips were an inch away from his. "Say I could. Say yes." 
 

"No," he repeated. "Not close to Summertide." 
 

But Amy did not reply. She was busy with other arguments. 
 

Darya Lang had a terrible sense of anticlimax. To come so far, to steel herself for confrontation and danger and exciting new experiences . . . and then to be left to cool her heels for days on end, while others decided when—and if—she would be allowed to undertake the final and most crucial part of her journey!

No one in the Alliance had suggested that her task on Quake would be easy. But also no one had suggested that she might have trouble
reaching O
pal's sister world once she got to the Dobelle system. So far she had not even even
seen
Quake, except from a distance. She was stuck on Opal's Starside for an indefinite period, with nothing to do, only short-range transportation available to her, and no say in what happened next.