An Irish woman brought in tea and trays of trimmed sandwiches and pastries.

"My indulgence," Russell said. "Jack is more like beer and potato chips."

"Total barbarian," Halliburton said, snagging a watercress sandwich as he sat down. "So what do you have that's so interesting? What do you have that's interesting interesting at all? at all?

The other two men waited while the woman poured tea and left. "General or specific?" Nesbitt said.

"General," Russell said.

He rubbed his forehead, and for a moment you could see the seven time zones of jet lag.

"Basically, and expecting initial rejection, I'm offering you our expertise for free."

"Right about that," Jack said. "The rejection."

"If we did seek outside help," Russ said, "why should it be you rather than the Europeans or j.a.panese?"

"We're older and larger-not in terms of money, true, but as a research organization."

"We are doing research here," Jack said, peering doubtfully into a sandwich, "but we're primarily a for-profit organization. One that doesn't have the faintest idea of what it will find. But we have a good chance that it will be earth-shaking.

"I've sunk most of a large fortune into this. I took on Dr. Sutton and his team because I felt I could trust them. In exchange for keeping their work secret, they are limited partners as well as salaried employees: if things go well, they all get a small percentage of what should be an astronomical return. If there's any leak, anything, they all get nothing."

"We're prepared to allow you to keep all financial returns from anything our people discover."

"People. That's the problem, Dr. Nesbitt. As an organization, NASA can promise anything it wants. But if one of your people people stumbles on an antigravity machine, I think he or she might trade a job with NASA for limitless wealth." stumbles on an antigravity machine, I think he or she might trade a job with NASA for limitless wealth."

Nesbitt nodded amicably, tasted his tea, and sifted some sugar into it. "Your investment is, what, about a third of a billion eurodollars?"

"Close enough."

"Then let me go from the general to the specific. We're prepared to match your funds. Wipe the slate clean."

"In exchange for?" Russ asked.

"A team of twelve researchers who would clear every publication with you, and also a.s.sign any present or future profits to you." He looked at Jack over the rim of his teacup and sipped. "Up in my room I have a long contract to that effect, which I'm told covers everything. Also, dossiers of the twelve."

"Including you?"

"I wish, but no. I'm just an administrator who loves science. I don't think you'd be impressed by my physics B.S. from Arkansas."

Jack smiled. "Maybe more by that than by your MBA from Harvard." He tapped his hearing aid. "Wonderful machines, these."

Nesbitt didn't blink. "Is it tempting?"

"Of course it is," Jack said harshly.

"Jack, we agreed from the get-go. No government. No military applications."

"We'd be amenable to that. It's not what we're looking for."

"What are are you looking for?" you looking for?"

"Half our team are exobiologists. It's not so much a 'what' ... as a 'who.'"

-12-.

Woods Hole, Ma.s.sachusetts, 1935

The Berrys were surprised when their son didn't want to go to Juilliard, which they certainly could have afforded. The changeling was interested in music, but its interest was not human, and it could be indulged anywhere. It could sit alone in the dark and play, in its mind, fantastic compositions that no human could play. With two extra imaginary hands, it could play a Bach fugue forward and backward at the same time. It often did things like that in the hours it had to feign sleep.

All it really knew of its origin was that it had come from the sea, and before taking human form it remembered having been for centuries a great white shark and a killer whale. There were other manifestations before that, and though the memories were vague, it seemed they had all been sea creatures of some sort.

Were there a lot of its kind? There was no way to tell. Others who had taken human form could pa.s.s for human indefinitely, appearing to age at a normal rate, "dying," and resuming life as someone else.

Its readings in psychology indicated that its transition, while it was learning the difference between killer whale behavior and human behavior, cannot have been common. There were tales of "feral children," supposedly raised by wolves or other animals, who might fit the pattern. He had plenty of time to investigate that.

There was no compelling reason for someone like it to become human. They could still be white sharks or killer whales-or coral reefs or rocks, if that made them content. The sea was a good hiding place.

So it decided that oceanography would be a reasonable place to start. If that didn't pan out, it could study some other discipline, switch ident.i.ty and do it again and again. Time was of no importance.

The leading edge of oceanographic research was Woods Hole, a new, privately endowed inst.i.tution. It was in Ma.s.sachusetts, so the changeling applied to several places in that commonwealth. Turned down by both Harvard and MIT, possibly because most of its high school courses had been taught by home tutors, it wound up going to the University of Ma.s.sachusetts, majoring in oceanography. Woods Hole did take graduate students from there as summer interns, and that was its eventual plan.

Its academic performance was predictably irregular; it aced anything that had to do with logic or memorization, but didn't do well in courses like literature or philosophy. It saw that many other students were that way, and most of them were shy loners, too.

After part of one semester of dormitory life, it moved out and got an apartment in town. That minimized the time and energy devoted to maintaining the Jimmy Berry facade, and gave it freedom to practice being other people, which it a.s.sumed would someday be a useful talent. After careful practice, it could become a different person of the same size in about ten minutes. Smaller or larger took twice as long or more, and was more painful and tiring. Once it became two children, though one had only average intelligence, and the other was dim-witted.

It had a cautious social life as Jimmy, going to a dance or the movies once or twice a month, always with a different girl. There was no shortage of dates for a handsome older California boy with money and family. There was no record of Jimmy's peculiar past in regard to the opposite s.e.x, and in 1935, s.e.x never became an issue on the first and only date.

(The changeling realized it would sooner or later have to learn s.e.xual etiquette, but decided to put it off until later. There was almost no reliable information on the subject in America at that time; people in movies and books made obvious s.e.xual overtures, but never followed through. It knew that "Take off your clothes and put them on the dresser" would only work under certain conditions. You did have to wind up alone and in a state of undress together, but how you got there from the pa.s.sionate kiss or arched eyebrow was a mystery.) So its course was set: four years of work that shined in science and mathematics and language, but little else, which was good protective coloration, and then a couple of years on a master's, then a doctorate and, eventually, Woods Hole.

It did get to work at Woods Hole for two summers, sailing the ketch Atlantis Atlantis as a graduate intern. Every now and then, on days off, it would go to a deserted cove and spend an hour changing into a dolphin, to get back to the sea in a more personal, familiar way. These cold rich waters were another world from its Pacific home, and it learned a lot, some of which would direct its own research. as a graduate intern. Every now and then, on days off, it would go to a deserted cove and spend an hour changing into a dolphin, to get back to the sea in a more personal, familiar way. These cold rich waters were another world from its Pacific home, and it learned a lot, some of which would direct its own research.

But before the doctorate came, war intervened.

The changeling saw people being drafted and a.s.signed to whatever kind of job and place the military desired. But people who joined up were allowed to choose, within reason.

It wanted to study the Pacific, suspecting its origin must be somewhere out there. Danger wasn't a factor; as far as it knew, it couldn't die. So it joined the Marines, and asked for a Pacific a.s.signment.

To most graduate students, it would be an annoyance and delay- not to mention the possibility of being shot or succ.u.mbing to some tropical disease. But to the changeling, time was just time, meaningless. Every new experience had been useful.

It didn't tell the Marine Corps about college, which probably would have led to a desk job. So instead of being a marine science Marine, it became a plain foot soldier, grunt, jarhead. Pearl Harbor was a year away.

-13-.

Eurasia, pre-Christian era

The changeling wasn't alone on the planet. There was another creature, unrelated, who had lived on Earth longer than he could remember; who had lived thousands of lives, disappearing when he got too old, to reappear as a young man.

He was always a man, and usually a brute.

Call him the chameleon: an alpha male who never had sons, unless an adulterer cooperated. Unlike the changeling, he did have DNA, but it was alien; he could no more reproduce with a human than he could with a rock or a tree.

Also unlike the changeling, he seemed to be stuck in human form. It never occurred to him to wonder why this was so. But it didn't occur to him for tens of millennia-not until the Renaissance-that he might have come from another world. He a.s.sumed that he was some sort of demon or demiG.o.d, but early on realized that it was a mistake to advertise the fact. He couldn't be killed, not even by fire, but he did feel pain, and he felt it profoundly, in ways a human never could. At low levels it was pleasure, and he sought out varieties of that. But hanging and crucifixion were experiences he never wanted to do a second time. To be burned to ashes was agony beyond belief, and reconstructing yourself afterward was worse.

So after a few experiences that probably helped establish the myth of the vampire, the chameleon settled into routine existence, seriatim lives that were fairly ordinary.

He was usually a warrior, and of course a good one. Sometimes his career was cut short by being chopped in two or trampled or drawn and quartered. In the chaos of battle he could usually find a few minutes of darkness, to pull himself together, and then go off in search of another life. When his death and interment were witnessed by many, he had to fake a grave robbery or, reluctantly, a miracle.

In ancient times, he occasionally wound up being a warlord or even a king, by dint of superiority in battle and an instinct to advance. But that was always more trouble than it was worth, and made it almost impossible to arrange a private death and resurrection.

Like the changeling, he was a quick study, but he was a sensualist, indifferent to knowledge. All he needed to know in order to survive, his body already knew. The rest was just for maximizing pleasure and minimizing pain that was too great to enjoy.

He picked the right side in the Peloponnesian Wars, and went through several generations as a Spartan. Then he joined Alexander's army and wound up settling in Persia. He spent a century or so as a Parthian before he eased into the Roman sphere.

It was as a Parthian that he heard the story of Jesus Christ, which interested him. Killed in public and then resurrected, he was evidently a relative. He would keep an eye out for him.

The chameleon entered the history books only once, and it was because of his interest in Christianity. In the third century, in Norborne, he was a captain of the Praetorian Guard, and was a little too open in his curiosity about the fellow immortal. An enemy reported him, and Diocletian had him executed as a closet Christian, by archers. But his girlfriend, Irene, wouldn't leave him alone to die, and he "miraculously" recovered. Diocletian subsequently had him beaten to a pulp by soldiers with iron rods, whereupon Irene let him stay dead long enough to turn into a young soldier and escape, leaving behind the legend of Saint Sebastian.

He worked as a farmhand and soldier in Persia until 313, when the Edict of Milan made it safe to be a Christian. When he heard about that, he dropped his plow and walked to Italy, robbing people along the way, just enough to get by.

He didn't like being so close to authority, so he went back to France and shuffled between Gallia and Germania for awhile, keeping an eye out for other immortals. Things got ugly in the 542 plague, so he made his way over to England as part of the Saxon invasion.

England seemed more congenial than the Continent, as the Roman empire collapsed into chaos, and the chameleon lived many lifetimes there, first as soldier and farmer, but eventually learning a variety of trades: blacksmith, cobbler, butcher.

In 1096, he went back to soldiering, following the Crusades down to Jerusalem and beyond. He fought on both sides for a century or so, and eventually, as an Arab, went back to Egypt and started walking south along the Nile.

Making himself dark and tall, he became a Masai warrior, and it was the best life he'd yet encountered: lots of women and great food and, in exchange for a battle every now and then, sleep late in the morning and hunt for game with spears, which he enjoyed. He did that for several hundred years, still keeping an eye out for Christ or another relative, probably white.

But the first white people who showed up were bearing guns and chains. He could have resisted and conveniently "died," but he'd heard about the New World and was curious.

The ride over was about the worst thing he'd ever experienced- right up there with being boiled in oil or flayed to death. He lay in chains for weeks, stuffed in an airless hold with hundreds of others, many of whom died and lay rotting until someone got around to throwing them overboard.

It was a real ch.o.r.e. He thought about just bursting his chains, at night, and diving into the sea. He'd done that before, in Phoenicia, and swam dozens of leagues to sh.o.r.e. But Africa, after a few days under sail, would be months of swimming, so he'd just be trading one agony for another.

So he allowed himself to be carried to America, and in a way enjoyed being put up on the block-he was by far the healthiest specimen off the ship, since metabolism was irrelevant to him, other than as a source of pleasure. The Georgia man who bought him, though, was cruel. He liked to whip the new boys into submission, so at the first opportunity, the chameleon killed him, and then turned into a white man and walked away.

That was an amusing time. His version of English was almost a thousand years old, so he had to masquerade as an idiot while he learned how to communicate. He walked north, again robbing and murdering for sustenance, when he knew he wouldn't be caught.

He kept moving north until he got to Boston, and settled in there for a few hundred years.

-14-.

Apia, Samoa, 2020

Little green men," Halliburton said, staring at Nesbitt. "You've been reading the tabloids."

"The thing is at least a million years old," Russell said.

Nesbitt nodded. "But it's obviously a made made thing." thing."

"Maybe not," Russell said. "It could be the product of some exotic natural force."

"a.s.sume not, though. If some intelligence made it a million or some millions of years ago ... well, we can't say anything about their motivation, but if they're like humans at all, there's a good chance the thing is inhabited in some sense."

"Still alive after a million years," Halliburton said, stacking up two little egg salad sandwiches.

"We're still alive after more than a million years."

"Speak for yourself, s.p.a.ceman."

"I mean humanity, since we evolved from h.o.m.o erectus h.o.m.o erectus. We've been traveling through s.p.a.ce in a closed environment, growing from a few individuals to seven billion."

"It's a point," Russ said. "That thing is a closed environment, in spades."

"Your eight billion little green men are going to be tiny tiny green men." green men."

"Well, it's probably not full of little hamsters in s.p.a.ce suits," Nesbitt said. "It may not be inhabited in the sense of carrying individuals. It could have some equivalent of sperm and eggs, or spores-or it could be basically information, like a von Neumann machine."

"Oh, yeah. I sort of remember that," Russ said.

"I don't," Halliburton said. "German?"

"Hungarian, I think. It's an early nanotech idea. You send little s.p.a.ceships out to various stars. Each one is a machine, programmed to seek out materials and build two duplicates of itself, which would take off for two other stars."

"Yeah," Russ said, "and after a few million years, every planet in the galaxy would have been visited by one of these machines. The fact that there obviously isn't one on Earth is offered as proof that there's no other s.p.a.ce-faring life in this galaxy."

"That's a stretch."

Russ shrugged. "Well, the galaxy is thousands of millions of years old. The logic is that the project would be relatively simple to set up, and then would take care of itself."