"Precisely," she replied. "Throw enough warm bodies at the barricades, and any defense will go down. In a native uprising, there are generally hordes of fervent fanatics willing to die in the cause and go straight to Paradise. Accelerating, Alex."

He gave her a thumbs-up, and she threw him into his seat. He merely raised an eyebrow at her column and kept typing. "There must be several different variations on that theme. Let's see-you could have your Desecration of Holy Site Uprising, your Theft of Ancient Treasures Uprising, your Palace Coup Uprising, your Local Peasant Revolution Uprising. Uh-huh. I can see it. And when you've overrun the base, it's time to line everyone up as examples of alien exploitation. Five executioners, no waiting."

"They normally don't kill except by accident, actually, or in the heat of the moment," she told him. "Most native sophonts are bright enough to realize that two hundred of Central Systems' citizens, a whole herd of their finest minds and and their dependents, make a much better bargaining chip as hostages than they do as casualties." their dependents, make a much better bargaining chip as hostages than they do as casualties."

"Not much comfort to those killed in the heat of the moment," he countered. "So, what's the next culprit on the list?"

"The third, last, and most common," she said, a bit grimly, and making no effort to control her voice-output. "Disease."

"Whoa, wait a minute-I thought that these sites were declared free of hazard!" He stopped typing and paled a little, as well he might. Plague was the bane of the Courier Service existence. More than half the time of every CS ship was spent in ferrying vaccines across known s.p.a.ce-and for every disease that was eradicated, three more sprang up out of nowhere. Nor were the brawns immune to the local plagues that just might choose to start at the moment they planeted. "I thought all these sites were sprayed down to a fare-thee-well before they let anyone move in!"

"Yes, but that's the one I'm seriously concerned about." And not just because it was a bug that got me. And not just because it was a bug that got me. "That, my dear Alex, is what they "That, my dear Alex, is what they don't don't tell you bright-eyed young students when you consider a career in archeology. The number one killer of xeno-archeologists is disease." tell you bright-eyed young students when you consider a career in archeology. The number one killer of xeno-archeologists is disease." And the number one crippler, for that matter. And the number one crippler, for that matter. "Viruses and proto-viruses are sneaky sons-of-singularities; they can hibernate in tombs for centuries, millennia, even in airless conditions." She flashed up some Inst.i.tute statistics; the kind they "Viruses and proto-viruses are sneaky sons-of-singularities; they can hibernate in tombs for centuries, millennia, even in airless conditions." She flashed up some Inst.i.tute statistics; the kind they didn't didn't show the general public. There was a thirty percent chance that a xeno-archeologist would be permanently disabled by disease during his career; a twenty percent chance that he would show the general public. There was a thirty percent chance that a xeno-archeologist would be permanently disabled by disease during his career; a twenty percent chance that he would die. die. And a one hundred percent chance that he would be seriously ill, requiring hospitalization, from something caught on a dig, at some point in his life. And a one hundred percent chance that he would be seriously ill, requiring hospitalization, from something caught on a dig, at some point in his life.

"So the bug hibernates. Then when the intrepid explorer pops the top off-" Alex looked as grim as she felt.

"Right. Gotcha." She laughed, but it had a very flat sound. "Well, sometimes it's been known to be fortuitous. The Cades actually met met when they were recovering when they were recovering from from Henderson's Ch.o.r.ea-ah-or so their biographies in Henderson's Ch.o.r.ea-ah-or so their biographies in Who's Who Who's Who say. There could be worse things than having the Inst.i.tute cover your tropic vacation." say. There could be worse things than having the Inst.i.tute cover your tropic vacation."

"But mostly it isn't." His voice was as flat as her laugh had been.

"Ye-es. One of my-close friends is Doctor Kennet on the Pride of Albion. Pride of Albion. He's gotten to be a specialist in diseases that get archeologists. He's seen a lot of nasty variations over the years-including some really odd opportunistic bugs that are not only short-lived after exposure to air, but require a developing nervous system in order to set up housekeeping." He's gotten to be a specialist in diseases that get archeologists. He's seen a lot of nasty variations over the years-including some really odd opportunistic bugs that are not only short-lived after exposure to air, but require a developing nervous system in order to set up housekeeping."

"Developing-oh, I got it. A kid, or a fetus, provided it could cross the placental barrier." He shivered, and his expression was very troubled. "Brr, that's a really nasty one."

"Verily, White Knight." She decided not to elaborate on it. Maybe later. To let him know I'm not only out for fortune and glory. Maybe later. To let him know I'm not only out for fortune and glory. "I just wanted you to be prepared when we got there, which we will in-four days, sixteen hours, and thirty-five minutes. Not bad, for an old-fashioned FTL drive, I'd say." She'd eliminated the precise measurements that some of the other sh.e.l.lpersons used with their brawns in the first week-except when she was speaking to another sh.e.l.lperson, of course. Alex didn't need that kind of precision, most of the time; when he did, he asked her for it. She had worried at first that she might be getting sloppy- "I just wanted you to be prepared when we got there, which we will in-four days, sixteen hours, and thirty-five minutes. Not bad, for an old-fashioned FTL drive, I'd say." She'd eliminated the precise measurements that some of the other sh.e.l.lpersons used with their brawns in the first week-except when she was speaking to another sh.e.l.lperson, of course. Alex didn't need that kind of precision, most of the time; when he did, he asked her for it. She had worried at first that she might be getting sloppy- No, I'm just accommodating myself to his world. I don't mind. And when he needs precision, he lets me know in advance.

"Well, let me see if I can think of some non-lethal reasons for the dig losing communications-" He grinned. "How about-'the dinosaur ate my transmitter?'"

"Cute." Now that their acceleration had smoothed and they were out of the atmosphere, she sent servos snooping into his cabin, as was her habit whenever a week or so went by, and he was at his station, giving her non-invasive access. "Alex, don't you ever pick up your clothes?"

"Sometimes. Not when I'm sent hauling my behind up the stairs with my tail on fire and a directive from CS ordering me to report back to my ship immediately. immediately." He shrugged, completely unrepentant. "I wouldn't even have changed changed my clothes if that officious b-" my clothes if that officious b-"

"Alex," she warned. "I'm recording, I have to. Regulations." Ever since the debacle involving the Nyota Five, all all central cabin functions were recorded, whenever there was a softperson, even if only a brawn, present. That was regulation even on AI drones. The regs had been written for AI drones, in fact; and CS administration had decided that there was no reason to rewrite them for brainships-and every reason why they central cabin functions were recorded, whenever there was a softperson, even if only a brawn, present. That was regulation even on AI drones. The regs had been written for AI drones, in fact; and CS administration had decided that there was no reason to rewrite them for brainships-and every reason why they shouldn't. shouldn't. This way no one could claim "discrimination," or worse, "entrapment." This way no one could claim "discrimination," or worse, "entrapment."

"If that officious bully bully hadn't insisted I change to uniform before lifting." He shook his head. "As if wearing a uniform was going to make any difference in how well hadn't insisted I change to uniform before lifting." He shook his head. "As if wearing a uniform was going to make any difference in how well you you handled the lift. Which was, as always, excellent." handled the lift. Which was, as always, excellent."

"Thank you." She debated chiding him on his untidy nature and decided against it. It hadn't made any difference before, it probably wouldn't now. She just had the servos pick up the tunic and trousers-wincing at the ultra-neon purple that was currently in vogue-and deposited them in the laundry receptacle.

And I'll probably have to put them away when they're clean, too. No wonder they wanted him to change. Hmm. Wonder if I dare "lose" them? Or have a dreadful accident that dyes them a nice sober plum?

That was a thought to tuck away for later. "Getting back to the dinosaur-com equipment breaks, and even a Cla.s.s Three dig can end up with old equipment. If the only fellow on the dig qualified to fix it happens to be laid up with broken bones-in case you hadn't noticed, archeologists fall down shafts and off cliffs a lot-or double-pneumonia..."

"Good point." He finished his "housekeeping ch.o.r.es" with a flourish and settled back in his chair. "Say, Tia, they're all professorial types-do they ever just get so excited they forget to transmit?"

"Brace yourself for FTL-" The transition to FTL was nowhere near as distressing to softpersons as the dive into a Singularity, but it required some warning. Alex gripped the arms of the seat, and closed his eyes, as she made the jump into hypers.p.a.ce.

She never experienced more than a brief shiver-like ducking into a freezing-cold shower-but Alex always looked a little green during transition. Fortunately, he had no trouble in hyper itself.

And if I can ever afford a Singularity Drive, his records say he takes those transitions pretty well....

Well, right now, that was little more than a dream. She picked up the conversation where it had left off. "That has happened on Cla.s.s One digs and even Cla.s.s Two, but usually somebody realizes the report hasn't been made after a while when you're dealing with a big dig. Besides, logging reports const.i.tutes publication, and grad students need all the publication they can get. Still, if they just uncovered the equivalent of Tutankhamen's tomb, they might might all be so excited-and busy doc.u.menting finds and putting them into safe storage-that they've forgotten the rest of the universe exists." all be so excited-and busy doc.u.menting finds and putting them into safe storage-that they've forgotten the rest of the universe exists."

He swallowed hard, controlling his nausea. It generally seemed to take his stomach a couple of minutes to settle down. Maybe the reason it doesn't hit me is because there's no sensory nerves to my stomach anymore Maybe the reason it doesn't hit me is because there's no sensory nerves to my stomach anymore....

But that only brought back unpleasant memories; she ruthlessly shunted the thought aside.

"So-" he said finally, as his color began to return. "Tell me why you aren't in a panic because they haven't answered."

"Artifact thieves would probably have been spotted, there aren't any natives to revolt, and disease usually usually takes long enough to set in that takes long enough to set in that somebody somebody would have called for help," she said. "And that's why CS wasn't particularly worried, and why they kept countermanding the Inst.i.tute's orders. But either this expedition has been out of touch for so long that even would have called for help," she said. "And that's why CS wasn't particularly worried, and why they kept countermanding the Inst.i.tute's orders. But either this expedition has been out of touch for so long that even they they think there's something wrong, or they've got some information they didn't give us. So we're going in." think there's something wrong, or they've got some information they didn't give us. So we're going in."

"And we find out when we get there," Alex finished; and there wasn't a trace of a smile anywhere on his face.

Tia brought them out of hyper with a deft touch that rattled Alex's insides as little as possible. Once in orbit, she sent down a signal that should activate the team's transmitter if there was anything there to activate. As she had told Alex several days ago, com systems broke. She was fully expecting to get no echo back.

Instead- You are linked to Excavation Team Que-Zee-Five-Five-Seven. The beacon's automatic response came instantly, in electronic mode. Then came the open carrier wave. The beacon's automatic response came instantly, in electronic mode. Then came the open carrier wave.

"Alex, I think we have a problem," she said, carefully.

"Echo?" He tensed.

"Full echo-" She sent the recognition signal that would turn on landing a.s.sistance beacons and alert the AI that there was someone Upstairs-the AI was supposed to open the voice-channel in the absence of humans capable of handling the com. The AI came online immediately, transmitting a ready to receive instructions ready to receive instructions signal. signal.

"Worse, they've got full com. I just got the AI go-signal."

She blipped a compressed several megabytes of instructions to give her control of all external and internal recording devices, override any programs installed since the base was established, and give her control of all sensory devices still working.

"Get the AI to give me some pictures," he said, all business. "If it can."

"Coming up-ah, external cam three-this is right outside the mess hall and-oh sh.e.l.lcrack-"

"I'll second that," Alex replied, just as grimly.

The camera showed them-somewhat fuzzily-a scene that was anything but a pretty sight.

There were bodies lying in plain view of the camera; from the lack of movement they could not be live bodies. They seemed to be lying where they fell, and there was no sign of violence on them. Tia switched to the next camera the AI offered; a view inside the mess hall. Here, if anything, things were worse. Equipment and furniture lay toppled. More bodies were strewn about the room.

A chill that had nothing to do with the temperature in her sh.e.l.l held her in thrall. Fear, horror, helplessness- Her own private nightmares- Tia exerted control over her internal chemistry with an effort; told herself that this could not not be the disease that had struck her. These people were taken down right where they stood or sat- be the disease that had struck her. These people were taken down right where they stood or sat- She started to switch to another view, when Alex leaned forward suddenly.

"Tia, wait a minute."

Obediently, she held the screen, sharpening the focus as well as the equipment, the four-second lag-to-orbit, and atmospheric interference would allow. She couldn't look at it herself.

"There's no food," he said, finally. "Look-there's plates and things all over the place, but there's not a sc.r.a.p of food anywhere."

"Scavengers?" she suggested. "Or whatever-"

Whatever killed them? But there are no signs of an invasion, an attack from outside- He shook his head. "I don't know. Let's try another camera."

This one was outside the supply building-and this was where they found their first survivors.

If that's what you can call them. Tia absorbed the incoming signal, too horrified to turn her attention away. There was a trio of folk within camera range: one adolescent, one young man, and one older woman. They paid no attention to each other, nor to the bodies at their feet, nor to their surroundings. The adolescent sat in the dirt of the compound, stared at a piece of brightly colored sc.r.a.p paper in front of him, and rocked, back and forth. There was no sound pickup on these cameras, so there was no indication that he was doing anything other than rocking in silence, but Tia had the strange impression that he was humming tunelessly. Tia absorbed the incoming signal, too horrified to turn her attention away. There was a trio of folk within camera range: one adolescent, one young man, and one older woman. They paid no attention to each other, nor to the bodies at their feet, nor to their surroundings. The adolescent sat in the dirt of the compound, stared at a piece of brightly colored sc.r.a.p paper in front of him, and rocked, back and forth. There was no sound pickup on these cameras, so there was no indication that he was doing anything other than rocking in silence, but Tia had the strange impression that he was humming tunelessly.

The young man stood two feet from a fence and shifted his weight back and forth from foot to foot, swaying, as if he wanted to get past the fence and had no idea how. And the older woman paced in an endless circle.

All three of them were filthy, dressed in clothes that were dirt-caked and covered with stains. Their faces were dirt-streaked, eyes vacant; their hair straggled into their eyes in ratty tangles. Tia was just grateful that the cameras were not equipped to transmit odor.

"Tia, get me another camera, please," Alex whispered, after a long moment.

Camera after camera showed the same view; either of bodies lying in the dust, or of bodies and a few survivors, aimlessly wandering. Only one showed anyone doing anything different; one young woman had found an emergency ration pouch and torn it open. She was single-mindedly stuffing the ration-cubes into her mouth with both hands, like- "Like an animal," Alex supplied in a whisper. "She's eating like an animal."

Tia forced herself to be dispa.s.sionate. "Not like an animal," she corrected. "At least, not a healthy one." She a.n.a.lyzed the view as if she were dealing with an alien species. "No-she acts like an animal that's been brain-damaged-or maybe a drug addict that's been on something so long there isn't much left of his higher functions."

This wasn't "her" disease. It was something else-deadly-but not what had struck her down. What she felt was not exactly relief, but she was able to detach herself from the situation, to distance herself a little.

You knew, sooner or later, you'd see a plague. This one is a horror, but you knew this would happen.

"Zombies," Alex whispered, as another of the survivors plodded past without so much as a glance at the woman eating, who had given up eating with her hands and had shoved her face right down into the torn-open ration pouch.

"You've seen too many bad holos," she replied absently, sending the AI a high-speed string of instructions. She had to find out when this happened-and how long these people had been like this.

It was too bad that the cameras weren't set to record, because that would have told her a lot. How quickly the disease-for a plague of some kind would have had an incubation time-had set in, and what the initial symptoms were. Instead, all she had to go on were the dig's records, and when they had stopped making them.

"Alex, the last recorded entry into the AI's database was at about oh-two-hundred, local time, a week and a half ago," she said. "It was one of the graduate students logging in pottery shards. Then-nothing. No record of illness, nothing in the med records, no one even using a voice-activator to ask the AI for help. The mess hall computer programmed the synthesizer to produce food for a few meals, then something broke the synthesizer."

"One of them," Alex hazarded.

"Probably." She looked for anything else in the database and found nothing. "That's about all there is. The AI has been keeping things going, but there's been no interaction with it. So forget what I said about diseases taking several days to set in-it looks like this one infected and affected everyone on the base between-oh-some time during the night, and dawn."

If she'd had a head, she would have shaken it. "I can't imagine how something like that could happen to everyone everyone at the same time without someone at least blurting a few words to a voice pickup!" at the same time without someone at least blurting a few words to a voice pickup!"

"Unless...Tia, what if they had to be asleep? I mean, there's things that happen during sleep, neuro transmitters that initiate dream-sleep-" Alex looked up from the screen, with lines of strain around his eyes. "If they had to be asleep to catch this thing-"

"Or if the first symptom was was sleep..." She couldn't help herself; she wanted to shiver with fear. "Alex, I have to set down there. You can't do anything for those people from up here." sleep..." She couldn't help herself; she wanted to shiver with fear. "Alex, I have to set down there. You can't do anything for those people from up here."

"No argument." He strapped himself in. "Okay, lady-get us down as fast as you can. There's one thing I have have to do, quick, before we lose any more." to do, quick, before we lose any more."

She broke orbit with a sudden acceleration that threw him into the back of his seat; he didn't bat an eye. His voice got a little more strained, but that was all.

"I'll have to put on a pressure-suit and get into the supplies; put out food and pans of water. They're starving and dehydrated. Spirits of s.p.a.ce only know what they've been eating and drinking all this time-could be a lot of them died of dysentery, or from eating or drinking something that wasn't food." He was thinking out loud; waiting for Tia to put in her own thoughts, or warn him if he was planning to do something really stupid. "No matter what else we do, I have have to do that." to do that."

"Open up emergency ration bags and leave pans of the cubes all over the compound," she suggested, as her outer skin heated up to a glowing red as she hit the upper atmosphere. "Do the same with the water. Like you were feeding animals."

"I am feeding animals," he said, and his voice and face were bleak. "I have to keep telling myself that. Or I'll do something really, really stupid. You get a line established to Kleinman Base, ASAP."

"Already in the works." A hyperwave comlink that far wasn't the easiest thing to establish and hold- But that was why she was a brainship, not an AI drone.

"Hang on," she said, as she hit the first of the turbulence. "It's going to be a b.u.mpy burn down!"

The camera and external mike on Alex's helmet gave her a much clearer view of the survivors than Tia really wanted. Of the complement of two hundred at this base, no more than fifty survived, most of them between the ages of fifteen and thirty.

They avoided Alex entirely, hiding whenever they saw him-but they came out to huddle around the pans of food and water he put out, stuffing food into their faces with both hands. Alex had gotten three of the bodies he'd found in their beds into the med-center, and the diagnosis was the same in all three cases; complete systemic collapse, which might have been stroke. The rest-the ones that had not simply dropped in their tracks-had died of dysentery and dehydration. Of the casualties, it looked as if half of the dead had keeled over with this collapse, all of them the oldest members of the team.

After the third, Alex called a halt to it; instead he loaded the bodies into the base freezer. Someone else would have to come get them and deal with them. Tia had recorded his efforts, but could not bring herself to actually watch the incoming video.

He completed his grisly work and returned to caring for the living. "Tia, as near as I can guess, this thing hits people in one of two ways. Either you get a stroke or something and die, or you turn into-that." She saw whatever he was looking at by virtue of the fact that the helmet-camera was mounted right over his forehead. And "that" was something that had once been a human boy, scrambling away out of sight.

"That seems like a good enough a.s.sumption for now," she agreed. "Can you tell what happened with the food situation? Are they so-far gone that they can't remember how to get into basic supplies?"

"That's about it," he agreed, wearily. "Believe it or not, they can't even remember how to pop ration packs-they seem to have a vague memory of where the food was stored, but they never even tried to open the door to the supply warehouse." He trudged across the compound to one of the pans he had set out. It was already empty, without even crumbs. He poured ration-cubes into it from a bag he carried under his arm. She caught furtive movement at the edge of the camera-view; presumably the survivors were waiting for him to go away so that they could empty the pan again. "When they found the emergency pouches they tore them open, like that woman we watched. But a lot of times, they don't even seem to realize that the pouch has food in it."

"There's two kinds of victims; the first lot, who got hit and died in their sleep or on the way to breakfast," he continued, making his way to the next pan. "Then the rest of them died of dehydration and dysentery because they were eating half-rotten food."

"Those would go hand-in-hand, here," she replied. "With nothing to stop the liquid loss through dysentery, dehydration comes on pretty quickly."

"That's what I figured." He paused to fill another pan. "There'd be more of them dead, of exposure and hypothermia, except that the temperature doesn't drop below twenty Celsius at night, or get above thirty in the daytime. Shirtsleeve weather. Tia-see when this balmy weather pattern started, would you?"

"Right." He must have had an idea-and it didn't take her more than a moment to interrogate the AI. "About a week before the last contact. Does that sound as suspicious to you as it does to me?"

"Yeah. Maybe something hatched." Alex scanned the area for her, and she noted that there were a fair number of insects in the air.

But native insects wouldn't bite humans-or would they? "Or sprouted-this could be a violent allergic reaction, or some other kind of interaction with a mold spore or pollen." Farfetched, but not entirely impossible.

"But why wouldn't the Cla.s.s One team have uncovered it?" he countered, filling another pan with ration-cubes. "Kibble," the brawns called it. The basic foodstuff of the Central System worlds; the monotonous ration-bars handed out by the PTA to client-planets cut up into bite-sized pieces. Tia had never eaten it; her parents had always insisted on real meals, but she had been told that while it looked, smelled, and tasted reasonable, its very sameness would drive you over the edge if you had to eat it for very long. But every base had emergency pouches of the stuff cached all over, and huge bags stockpiled in the warehouse, in case something happened to the food-synthesizers.

Those pouches must have been what kept the survivors going-until they ran out of pouches that were easy to find.

The dig records were, fortunately, quite clear. "Got the answer to your question-Cla.s.s One dig was here for winter, only-they found what they needed to upgrade to Cla.s.s Three within a couple of days of digging. They really hit a big find in the first test trench, and the Inst.i.tute pushed the upgrade through to take advantage of the good weather coming."

"And initial Survey teams don't live live here, they live on their ships." Alex had a little more life in his voice. here, they live on their ships." Alex had a little more life in his voice.

"They were only here in the fall," she said. "There's never been a human here during spring and summer."

"Tia, you put that together with an onset of this thing after dark, and what do you get?"

"An insect vector?" she hazarded. "Nocturnal? I must admit that the pattern for venomous and biting insects is to appear after sunset."

"Sounds right to me. As soon as I get done filling the pans again, I'm going to go grab some bedding from one of the victims' beds, seal it in a crate, and freeze it. Maybe it's something like a flea. Can you see if there's anything in the AI med records about a rash of insect bites?"

"Can do," she responded, glad to finally have something, anything, anything, concrete to do. concrete to do.

The sun was near the horizon when Alex finished boxing his selection of bedding and sealing it in a freezer container. He came back out again after loading the container into one of Tia's empty holds. She saw to the sealing of the hold, while he went back out to try and catch one of the Zombies-a name he had tagged the survivors with over her protests.

She finally established the comlink while he was still out in the compound, fruitlessly chasing one after another of the survivors and getting nowhere. He was weighted down with his pressure-suit; they were weighted down by nothing at all and had the impetus of fear. He seemed to terrify them, and they did not connect the arrival of food in the pans with him, for some reason.

"They act like I'm some kind of monster," he panted, leaning over to brace himself on his knees while he caught his breath. "Since they don't have that reaction to each other, it has to be this suit that they're afraid of. Maybe I should-"