Sarnac felt an odd calm. Too much had happened too fast and he was beyond worry. But then he noticed that Natalya was also staring at the impossible new arrival, her mouth hanging open like his own. The stranger touched something at the base of her throat, and the hood spread apart. Pulling it back, she revealed a face, as human as her form, although the features and coppery complexion were exotic. Then she spoke in an English that was oddly accented but clearly her language from birth.
"Quickly! Let's carry him this way to the cache where I left my first aid kit. Oh, don't forget the hand! We need to get as far away from here as possible. These two"—she kept talking as she reclaimed her knife from the body of the Korvaasha, and slid it into a pocket of her coverall—"had reported in, so they'll be expected. And . . . and what are you staring at?"
Sarnac opened his mouth several times, but there were so many questions that he couldn't frame any one of them. All that finally came out was, "You . . . you look human."
The most out-of-place sound imaginable, there and then, was laughter. But the stranger laughed. "I'm sorry," she said when she'd caught her breath, "but you just unwittingly repeated one of history's most famous lines—a line spoken by my great-grandfather. And the reply I'm supposed to make is: 'Thank you. So do you.' "
"But . . . but . . ." Sarnac forced himself not to start dithering. "But . . . who
are
you?" he exploded. Then something clicked. "Who, that is, besides the pilot of that fighter that saved our bacon?"
The woman regarded him with very dark eyes. "Very astute, Lieutenant Sarnac. Oh, yes, I know your name; we've been monitoring your communications." She took a deep breath. "Again, I'm sorry. In answer to your question, my name is Tiraena zho'Daeriel DiFalco." She raised a forestalling hand. "And, for now, that must suffice. I know I've got a lot of explaining to do, but it will have to wait. It's more urgent—wouldn't you agree—to tend to your friend's wound. Move!"
Sarnac moved.
Frank was asleep, after being treated with a pen-sized device that Tiraena assured them would stimulate cells to regenerate themselves.
"I suppose," Natalya said, "you can grow the hand back." Her sarcastic tone didn't quite last to the end of the sentence; the change in Frank's stump was too obvious to allow much scoffing.
"Oh, no," Tiraena replied, deadpan. "Regeneration on that level of complexity hasn't been made workable yet. And when it is, I'm sure it will require much more complex equipment than this. As it is, I'm afraid he won't be able to use his hand until the nerves are reconnected."
It was late afternoon, and they were in a glade near the riverbank, sheltered from satellite surveillance by an overhanging bluff. Tiraena had assured them that she had devices emplaced nearby that would warn of any foot patrols.
"And now," Sarnac said firmly, "I seem to recall we were promised an explanation."
"You were." Tiraena sat on the ground, and the two Scouts lowered themselves down, facing her, with their backs to the bluff. "I hardly know where to begin. I suppose the beginning is as good a place as any." She paused thoughtfully. "I assume your world still remembers that two of your centuries ago there was a project to terraform a planet in your home system."
"Mars," Natalya supplied. "And of course we remember it. I'm a native of that world."
"Ah, so the terraforming was finally completed!" Tiraena looked strangely pleased by the news.
"Yes . . . after the disappearance of almost all the project's personnel from their asteroid base," Sarnac put in. "It's considered the greatest mystery in centuries. And why do I have a feeling you're about to solve it for us?"
Tiraena smiled. "It's a rather long story, and I'll have to ask you to forego questions until I'm done. You see, during that same period, the inhabitants of Raehan, a world about a thousand light-years from the Solar System, had discovered displacement point travel. They began an expansion that brought them into contact with an aggressive, expansionist alien empire."
"Sounds familiar," Sarnac commented.
"Ah, but these people—the Raehaniv—had been at peace for five hundred years. In fact, they had been socially almost static for all that time. You see, they'd been through an era of war and social disintegration that almost destroyed them, and they had deliberately halted change in the name of stability. Their technological prohibitions had begun to break down, but not their attitude toward war, which was to simply deny that it could happen any more. When it
did
happen, they were philosophically paralyzed.
"Oh, one other thing about the Raehaniv: they were human. Yes," she added as her listeners' mouths began to open, "I know, that's impossible. Well, you're right. It is. It's one of the things I'll have to ask you to just accept for now."
"All right," Sarnac said, gritting his teeth. "We'll just accept that—and the fact that you know English, and have the technology you do, and are here on this planet where you don't seem to have any business. For now we'll accept all that. So go on with your story of these philosophically paralyzed Raehaniv."
"Actually, one of them wasn't: my great-great-grandfather, Varien hle'Morna. He had invented the technique of utilizing displacement points, among other things, and used his discoveries to grow rich beyond the dreams of avarice. Before the war, he had discovered—and kept secret—a displacement chain connecting the sun of Raehan with the star you call Alpha Centauri." She smiled at their expressions. "And he wanted so badly to investigate the high-energy civilization that he knew existed at the yellow star four-and-a-third light-years from there, that he also invented an application of gravitics that allowed faster-than-light travel without recourse to displacement points."
Sarnac was halfway to his feet when Tiraena gave her forestalling gesture. With an effort, he subsided.
"Varien saw very clearly that the Raehaniv were doomed," she went on. "So he decided not to give the secret of the new drive to his government. Instead, he went to your system with the idea of offering Earth's governments Raehaniv technology, including the secrets of interstellar travel in exchange for help for Raehan. He first made contact with the people working on what I think was called the Russian-American Mars Project in the asteroid belt. His offer placed those people in a quandary for two reasons. First, the empire the Raehaniv were fighting had a fixed policy of planetary extermination for any world that attacked it; the prize of a technological quantum leap was tempting, but the penalty for failure was too terrifying. Second, they knew that their homelands on Earth were falling under the control of antitechnology fanatics who were rabidly opposed to any presence in space whatsoever."
"That's true," Sarnac admitted. "Our civilization was falling apart—had been for some time. From what I've read, those people in space had grown pretty alienated from the nut-house Earth had become."
"As it turned out," Tiraena stated, "that very alienation held the solution to the dilemma. The Mars Project people accepted Varien's offer on their own, without informing their governments. With Varien's help, they outfitted a small fleet with Raehaniv-level technology, and departed the Solar system under the leadership of the military commander of the asteroid base . . ."
"Wait a minute! I
knew
there was something vaguely familiar about your last name! That commander, one of those who vanished . . ."
Tiraena nodded. "Yes. Colonel Eric DiFalco, United States Space Force, my great-grandfather. My great-grandmother was Varien's daughter, Aelanni. They led the exodus from the solar system, going to great lengths to keep Earth in ignorance, and to obliterate all evidence of the expedition's star of origin. You see, Colonel DiFalco—I never knew him, but my parents and grandparents used to tell me about him—was resolved to protect Earth from the consequences of possible failure on his part. However little he thought of his country's political leaders, he continued, to the end of his life, to love the
idea
of the 'United States,' even though he knew it had become unworthy of the loyalty he and the rest of its soldiers still lavished on it. The mysterious disappearance was part of the wall of secrecy he erected around Earth."
Sarnac squirmed uncomfortably. Could it be that the ghost of the nation his ancestors had defended still had the power to haunt him? He was glad Frank was asleep . . . but no, Frank needed to hear this.
"The upshot," Tiraena continued, "was a colossal irony. The war was won, and Raehan was liberated from its occupiers. And then DiFalco and the other Terrans found that they couldn't go home. They couldn't even
find
home. You see, the displacement chain to Alpha Centauri wasn't there any more."
For a long moment the two Scouts sat in silence, awaiting Tiraena's explanation of the patently nonsensical statement she had just made. Finally, when the silence had stretched on, Sarnac spoke hesitantly. "Ah, Ms. DiFalco . . ."
" 'Tiraena' is sufficient, Lieutenant."
"All right, Tiraena. We obviously have a linguistic problem here, despite your admittedly impressive command of English. I thought I understood you to say . . ."
"I meant precisely what I said, Lieutenant. Not only that displacement chain, but all previously charted chains had ceased to exist, and new ones had come into being." She sighed. "After the fact, our ancestors were able to deduce what had happened. Displacement points, as you must know, given your apparent level of technology, owe their existence to the gravitational relationships of the stars. But the stars are not stationary with respect to each other. The 'shape of space,' to employ a fallacious but widely used term, had changed at a very inopportune moment."
"But that's
ridiculous
!" Sarnac blurted. "The stars are in continuous relative motion! So this 'shape of space' is in a constant state of flux. Displacement points shouldn't be able to remain stable—even momentarily!"
"You overlook the staggering number of factors involved, and the complexity of the pattern," Tiraena retorted in her rather patronizing way. "That pattern has a tremendous . . . 'inertia' is as good a term as any. But when the stellar distribution has altered enough to overcome that inertia, the effect is instantaneous throughout its range, which seems to encompass much of the galactic spiral arm."
Sarnac started to protest further, but Natalya cut in. "No, Bob, this has been theorized before, but the theories have been ignored. Wishful thinking, I suppose." She turned to Tiraena. "So you're saying that the existing displacement network, on which all our interstellar contacts depend, is just a temporary phenomenon?"
"Precisely," Tiraena nodded.
"But . . . but that means that any day now our links with all our colonies, all our bases, could just go blooey!" Sarnac shook his head like a punch-drunk prizefighter. "How often does this happen?"
"We have no idea. That one time, two of your centuries ago, is the only recorded occurrence. But you're right about the unreliability of the displacement network. We now probe through displacement points very cautiously, pausing to determine the realspace location of each new system. As I mentioned, we have a means—called the continuous-displacement drive—for effectively exceeding lightspeed. But it's relatively slow; a ship built for speed and little else can cover almost fifteen light-years a day, but most ships are lucky to make a fifth of that. We want to make sure we can maintain contact that way, for we've learned the danger of overdependence on displacement chains. So, of course," she added with a smile, "did our enemies. Their empire ceased to exist as an empire."
"But bits and pieces of it must have survived," Natalya opined.
"True, and that's another reason we've been very cautious about displacement point exploration. We're always alert to the possibility of meeting one of those bits and pieces. We never have, though. Until now. In this system."
She paused and let it sink in.
Sarnac shook his head again.
Too much.
He needed sleep. "Do you mean that this alien enemy of yours was the Realm of Tarzhgul?"
"No," Tiraena denied, and her voice suddenly acquired a hard edge. "The Realm of Tarzhgul is merely a kind of free-living polyp of the monster we faced—an entity which the Korvaasha called the Unity. It expanded for more centuries, and incorporated more of this spiral arm, than we can know. It was a centralized state, distended far beyond the sane limits of such a structure, and still expanding under the drive of an ideology that had become institutionalized monomania. It demanded the enslavement of all accessible sentient life—including the Korvaasha themselves." She paused moodily. "I'm named after a granddaughter of Varien, a child who was murdered during the Korvaash occupation of Raehan. Someone in every generation of my family has been named after her. It's been a way of keeping alive our memory of what the Korvaasha did to our world, and of what renewed contact with their survivors could mean if we ever relax our vigilance.
"But we've never met such survivors. We once found a dead world that had been part of the Unity. The Korvaasha there must have been unable to function in the absence of rigid centralized control. They didn't—
couldn't
—do what they needed to survive, because the proper authorities weren't telling them to!"
"Then," Sarnac challenged, "how do you account for the Realm of Tarzhgul?"
"Like all surviving Korvaasha everywhere, it must be descended from the ones who were able to adapt to new conditions—the dangerous ones. So the Unity didn't really die. It was like a cancer, metastasizing through the galaxy."
The sun was setting behind her, forming an appropriate, blood-red backdrop.
Sarnac finally prompted, "But you mentioned that you had finally encountered the Korvaasha in this system."
Tiraena's head bobbed up and she blinked. "Oh, yes. Although, strictly speaking, there has been no encounter because we've been concealing our presence from them ever since they entered the system. We had been here for some time, you see. As I said, we explore very cautiously, and as a matter of routine precaution, we built a
very
heavily stealthed underground base after we determined there was no Korvaash presence. But we didn't keep any space-combat capability here. Maybe the fact that this planet is so homelike—nearly identical to Raehan, in fact—made us grow lax. All we had were pickets stationed in the outer system, which immediately departed under continuous-displacement drive. The rest of us remained in hiding in our base, spending our time fantasizing about what the relief fleet would do to the Korvaasha once it got here.