Caliban1 - Caliban, Isaac Asimov's - Roger MacBride Allen

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ISAAC

ASIMOV’S

CALIBAN

ROGER

MacBRIDE

ALLEN

To five wondrous creatures, named in the order of their appearance on this planet:

Aaron

Victoria

Benton

Jonathan

And

Meredith

Acknowledgments

This book would not have been possible without the support, and especially the patience, of David

Harris, John Betancourt, Byron Preiss, Susan Allison, Ginjer Buchanan, and Peter Heck. There was many

a slip between cup and the lip, but thanks to their collective efforts, never a drop of the good stuff was lost.

The book stands as proof once again that every writer needs at least one editor, and sometimes five or six is

no bad idea. Thanks are also due to Thomas B. Allen and Eleanore Fox, neither of whom had time to read

the manuscript, and both of whom did.

A Robot May Not Injure a Human Being, or, Through Inaction, Allow a Human Being to Come to Harm.

A Robot Must Obey the Orders Given It by Human Beings Except where Such Orders Would Conflict with

the First Law.

III

A Robot Must Protect Its Own Existence As Long As Such Protection Does Not Conflict with the First or

Second Law.

...THE Spacer-Settler struggle was at its beginning, and at its end, an ideological contest. Indeed,

to take a page from primitive studies, it might more accurately be termed a theological battle, for both sides

clung to their positions more out of faith, fear, and tradition than through any carefully reasoned marshaling

of the facts.

Always, whether acknowledged or not, there was one issue at the center of every confrontation

between the two sides: robots. One side regarded them as the ultimate good, while the other saw them as

the ultimate evil.

Spacers were the descendants of men and women who had fled semi-mythical Earth with their

robots when robots were banned there. Exiled from Earth, they traveled in crude starships on the first wave

of colonization from Earth. With the aid of their robots, the Spacers terraformed fifty worlds and created a

culture of great beauty and refinement, where all unpleasant tasks were left to the robots. Ultimately,

virtually all work was left to the robots. Having colonized fifty planets, the Spacers called a halt, and set

themselves no other task than enjoying the fruits of their robots’ labor.

The Settlers were the descendants of those who stayed behind on Earth. Their ancestors lived in

great underground Cities, built to be safe from atomic attack. It is beyond doubt that this way of life

induced a certain xenophobia into Settler culture. That xenophobia long survived the threat of atomic war,

and came to be directed against the smug Spacers--and their robots.

It was fear that had caused Earth to cast out robots in the first place. Part of it was an irrational fear

of metal monsters wandering the landscape. However, the people of Earth had more reasonable fears as

well. They worried that robots would take jobs--and the means of making a living--from humans. Most

seriously, they looked to what they saw as the indolence, the lethargy and decadence of Spacer society. The

Settlers feared that robots would relieve humanity of its spirit, its will, its ambition, even as they relieved

humanity of its burdens.

The Spacers, meanwhile, had grown disdainful of the people they perceived to be grubby

underground dwellers. Spacers came to deny their own common ancestry with the people who had cast

them out. But so, too, did they lose their own ambition. Their technology, their culture, their worldview, all

became static, if not stagnant, The Spacer ideal seemed to be a universe where nothing ever happened,

where yesterday and tomorrow were like today, and the robots took care of all the unpleasant details.

The Settlers set out to colonize the galaxy in earnest, terraforming endless worlds, leapfrogging

past the Spacer worlds and Spacer technology. The Settlers carried with them the traditional viewpoints of

the home world. Every encounter with the Spacers seemed to confirm the Settlers’ reasons for distrusting

robots. Fear and hatred of robots became one of the foundations of Settler policy and philosophy. Robot

hatred, coupled with the rather arrogant Spacer style, did little to endear Settler to Spacer.

But still, sometimes, somehow, the two sides managed to cooperate, however great the degree of

friction and suspicion. People of goodwill on both sides attempted to cast aside fear and hatred to work

together--with varying success.

It was on Inferno, one of the smallest, weakest, most fragile of the Spacer worlds, that Spacer and

Settler made one of the boldest attempts to work together. The people of that world, who called themselves

Infernals, found themselves facing two crises. Their ecological difficulties all knew about, though few

understood their severity. Settler experts in terraforming were called in to deal with that.

But it was the second crisis, the hidden crisis, that proved the greater danger. For, unbeknownst to

themselves, the Infernals and the Settlers on that aptly named world were forced to face a remarkable

change in the very nature of robots themselves... --Early History of Colonization, by Sarhir Vadid,

Baleyworld University Press, S.E 1231

THE blow smashed into her skull.

Fredda Leving’s knees buckled. She dropped her tea mug. It fell to the floor and shattered in a

splash of brown liquid. Fredda crumpled toward the ground. Her shoulder struck the floor, smashing into

the broken shards of the cup. They slashed into her left shoulder and the left side of her face. Blood poured

from the wounds.

She lay there, on her side, motionless, curled up in a ghoulish mockery of the fetal position.

For the briefest of moments, she regained consciousness. It might have been a split second after

the attack, or two hours later, she could not say. But she saw them, there was no doubt of that. She saw the

feet, the two red metallic feet, not thirty centimeters from her face. She felt fear, astonishment, confusion.

But then her pain and her injury closed over her again, and she knew no more.

ROBOT CBN-001, also known as Caliban, awoke for the first time. In a world new to him, his

eyes switched on to glow a deep and penetrating blue as he looked about his surroundings. He had no

memory, no understanding to guide him. He knew nothing.

He looked down at himself and saw he was tall, his body metallic red. His left arm was half-

raised. He was holding it straight out in front of him, his fist clenched. He flexed his elbow, opened his fist,

and stared at his hand for a moment. He lowered his arm. He moved his head from side to side, seeing,

hearing, thinking, with no recollection of experience to guide him. Where am I, who am I, what am I?

I am in a laboratory of some sort, I am Caliban, I am a robot. The answers came from inside him,

but not from his mind. From an on-board datastore, he realized, and that knowledge likewise came from

the datastore. So that is where answers come from, he concluded.

He looked down to the floor and saw a body lying on its side there, its head near his feet. It was

the crumpled form of a young woman, a pool of blood growing around her head and the upper part of her

body. Instantly he recognized the concepts of woman, young, blood, the answers flitting into his awareness

almost before he could form the questions. Truly a remarkable device, this on-board datastore.

Who is she? Why does she lie there? What is wrong with her? He waited in vain for the answers to

spring forth, but no explanation came to him. The store could not--or would not--help him with those

questions. Some answers, it seemed, it would not give. Caliban knelt down, peered at the woman more

closely, dipped a finger in the pool of blood. His thermocouple sensors revealed that it was already rapidly

cooling, coagulating. The principle of blood clotting snapped into his mind. It should be sticky, he thought,

and tested the notion, pressing his forefinger to his thumb and then pulling them apart. Yes, a slight

resistance.

But blood, and an injured human. A strange sensation stole over him, as he knew there was some

reaction, some intense, deep-rooted response that he should have--some response that was not there at all.

The blood was pooling around Caliban’ s feet now. He rose to his full two-meter height again and

found that he did not desire to stand in a pool of blood. He wished to leave this place for more pleasant

surroundings. He stepped clear of the blood and saw an open doorway at the far end of the room. He had no

goal, no purpose, no understanding, no memory. One direction was as good as another. Once he started

moving, there was no reason to stop.

Caliban left the laboratory, wholly and utterly unaware that he was leaving a trail of bloody

footprints behind. He went through the doorway and kept on going, out of the room, out of the building, out

into the city.

SHERIFF’S Robot Donald DNL-111 surveyed the blood-splattered floor, grimly aware that, on all

the Spacer worlds, only in the city of Hades on the planet of Inferno could a scene of such violence be

reduced to a matter of routine.

But Inferno was different, which was of course the problem in the first place.

Here on Inferno it was happening more and more often. One human would attack another at night-

-it was nearly always night--and flee. A robot--it was nearly always a robot--would come across the crime

scene and report it, then suffer a major cognitive dissonance breakdown, unable to cope with the direct,

vivid, horrifying evidence of violence against a human being. Then the med-robots would rush in. The

Sheriff’s dispatch center would summon Donald, the Sheriff’s personal robot, to the scene. If Donald

judged the situation warranted Kresh’ s attention, Donald instructed the household robot to waken Sheriff

Alvar Kresh and suggest that he join Donald at the scene.

Tonight the dismal ritual would be played out in full. This attack, beyond question, required that

the Sheriff investigate personally. The victim, after all, was Fredda Leving. Kresh must needs be

summoned.

And so some other, subordinate robot would waken Kresh, dress him, and send him on his way

here. That was unfortunate, as Kresh seemed to feel Donald was the only one who could do it properly.

And when Alvar Kresh woke in a bad mood, he often flew his own aircar in order to work off his tension.

Donald did not like the idea of his master flying himself in any circumstances. But the thought of Alvar

Kresh in an evil mood, half -asleep, flying at night, was especially unpleasant.

But there was nothing Donald could do about all that, and a great deal to be done here. Donald

was a short, almost rotund robot, painted a metallic shade of the Sheriff’s Department’s sky-blue and

carefully designed to be an inconspicuous presence, the sort of robot that could not possibly disturb or

upset or intimidate anyone. People responded better to an inquisitive police robot if it was not obtrusive.

Donald’s head and body were rounded, the sides and planes of his form flowing into each other in smooth

curves. His arms and legs were short, and no effort had been made to put anything more than the merest

sketch of a human face on the front of his head.

He had two blue-glowing eyes, and a speaker grille for a mouth, but otherwise his head was utterly

featureless, expressionless.

Which was perhaps just as well, for had his face been mobile enough to do so, he would have been

hard-pressed to formulate an expression appropriate to his reaction now. Donald was a police robot,

relatively hardened to the idea of someone harming a human, but even he was having a great deal of trouble

dealing with this attack. He had not seen one this bad in a while. And he had never been in the position of

knowing the victim. And it was, after all, Fredda Leving herself who had built Donald, named Donald.

Donald found that personal acquaintance with the victim only made his First Law tensions worse.

Fredda Leving was crumpled on the floor, her head in a pool of her own blood, two trails of

bloody footprints leading from the scene in different directions, out two of the four doors to the room.

There were no footprints leading in.

“Sir--sir--sir?” The robotic voice was raspy and rather crudely mechanical, spoken aloud rather

than via hyperwave. Donald turned and looked at the speaker. It was the maintenance robot that had

hyperwaved this one in.

“Yes, what it is?”

“Will she--will she--will she be all--all right right?” Donald looked down at the small tan robot. It

was a DAA-BOR unit, not more than a meter and a half high. The word-stutter in his speech told him what

he knew already. Before very much longer, this little robot was likely to be good for little more than the

scrap heap, a victim of First Law dissonance.

Theory had it that a robot on the scene should be able to provide first aid, with the medical

dispatch center ready to transmit any specialized medical knowledge that might be needed. But a serious

head injury, with all the potential for brain damage, made that impossible. Even leaving aside the question

of having surgical equipment in hand, this maintenance robot did not have the brain capacity, the fine

motor skills, or the visual acuity needed to diagnose a head wound. The maintenance robot must have been

caught in a classic First Law trap, knowing that Fredda Leving was badly injured, but knowing that any

inexpert attempt to aid her could well injure her further. Caught between the injunction to do no harm and

the command not to allow harm through inaction, the DAA-BOR’s positronic brain must have been

severely damaged as it oscillated back and forth between the demands for action and inaction.

“I believe that the medical robots have the situation well in hand, Daabor 5132,” Donald replied.

Perhaps some encouraging words from an authority figure like a high-end police robot might do some

good, help stabilize the cognitive dissonance that was clearly disabling this robot. “I am certain that your

prompt call for assistance helped to save her life. If you had not acted as you did, the medical team might

well not have arrived in time.”

“Thank thank thank you, sir. That is good to know.”

“One thing puzzles me, however. Tell me, friend--where are all the other robots? Why are you the

only one here? Where are the staff robots, and Madame Leving’s personal robot?”

“Ordered--ordered away,” the little robot answered, still struggling to get its speech under greater

control. “Others ordered to leave area earlier in evening. They are in are in the other wing of the laboratory,

And Madame Leving does not bring a personal robot with her to work.”

Donald looked at the other robot in astonishment. Both statements were remarkable. That a

leading roboticist did not keep a personal robot was incredible. No Spacer would venture out of the house

without a personal robot in attendance. A citizen of Inferno would be far more likely to venture out stark

naked than without a robot--and Inferno had a strong tradition of modesty, even among Spacer worlds.

But that was as nothing compared to the idea of the staff robots being ordered to leave. How could

that be? And who ordered them to go? The assailant? It seemed an obvious conclusion. For the most

fleeting of seconds, Donald hesitated. It was dangerous for this robot to answer such questions, given its

fragile state of mind and diminished capacity. The additional conflicts between First and Second Laws

could easily do irreparable harm. But no, it was necessary to ask the questions now. Daabor 5132 was

likely to suffer a complete cognitive breakdown at any moment in any event, and this might be the only

chance to ask. It would have been far better for a human, for Sheriff Kresh, to do the asking, but this robot

could fail at any moment. Donald resolved to take the chance. “Who gave this order, friend? And how did

you come to disobey that order?”

“Did not disobey! Was not present when order given. Sent--I was sent--on an errand. I came back

after.”

“Then how do you know the order was given?”

“Because it was given before! Other times!”

Other times? Donald was more and more amazed. “Who gave it? What other times? Who gave the

order? Why did that person give the order?”

Daabor 5132’s head jerked abruptly to one side. “Cannot say. Ordered not to tell. Ordered we

were ordered not to say we were sent away, either--but now going away caused harm to human harm harm

harm--”

And with a low strangling noise, Daabor 5132 froze up. Its green eyes flared bright for a moment

and then went dark.

Donald stared sadly at what had been a reasoning being brief moments before. There could be no

question that he had chosen rightly. Daabor 5132 would have failed within a few minutes in any event.

At least there was the hope that a skilled human roboticist could get further information out of the

other staff robots.

Donald turned away from the ruined maintenance robot and turned his attention back toward the

human victim on the floor, surrounded by the med-robots.

It was the sight that had destroyed the Daabor robot, but Donald knew he was, quite literally,

made of sterner stuff. Fredda Leving herself had adjusted his First, Second, and Third Law potential with

the express purpose of making him capable of performing police work.

Donald 111 stared at the scene before him, feeling the sort of First Law tension familiar to a

sheriff’s robot: Here was a human being in pain, in danger, and yet he could not act. The med-robots were

here for that, and they could aid Fredda Leving far more competently than he ever could. Donald knew that,

and restrained himself, but the First Law was quite clear and emphatic: A robot may not injure a human

being, or, through inaction, allow a human being to come to harm. No loopholes, no exceptions.

But to aid this human would be to interfere with the work of the med-robots, thus at least

potentially bringing harm to Fredda Leving. Therefore, to do nothing was to aid her. But he was enjoined

against doing nothing, and yet to aid her would be to interfere--Donald fought down the tremors inside his

mind as his positronic brain dealt with the same dissonance that had destroyed Daabor 5132. Donald knew

that his police-robot adjustments would see to it he survived the episode, as he had so many in the past, but

that did not make it any less unpleasant.

Humans, on the other hand: These days, the sight of blood and violence scarcely bothered Alvar

Kresh. Human beings could get used to such things. They could adapt. Donald knew that was so

intellectually, he had observed it, but he could not understand how it was possible. To see a human in

distress, in danger, to see a human as the victim of violence, even dead, and to be unmoved--that was

simply beyond his comprehension.

But human or robot, the police saw a lot, especially on Inferno, and experience did make it easier

in some ways. The paths of his positronic brain were well worn with the knowledge of how to deal with

this situation, however disturbing that might be. Stay back. Observe. Gather data. Let the meds do their

work.

And then wait for the human, wait for Alvar Kresh, wait for the Sheriff of the city of Hades.

The med-robots worked on the still form, rushing to stabilize her, ensure her blood supply,

patching up the gashes in her shoulder and face, attaching monitor pads and drug infusers, moving her to a

lift stretcher, shrouding her in blankets, inserting a breather tube into her mouth, cocooning her from sight

behind their protections and ministrations. And that is how it should be, Donald thought. Robots are the

shield between humans and the dangers of the world.

Though the shield had clearly failed this time. It was a miracle that Fredda Leving was even alive.

By all appearances the attack had been remarkably violent. But who had done this, and why?

The observer robots hovered about, recording the images of this scene from every angle. Maybe

their data would be of some use. Let them soak in all the details. Donald shifted his attention to the two sets

of bloody footprints that led from the body. He had already tracked them out as far as they went. Both sets

of prints faded away into invisibility after only a hundred meters or so, and he let it go at that. Police

technical robots were already using molecular sniffers to try to extend the trails, but they wouldn’t get

anywhere. They never did.

But there was no missing the key fact, the vital piece of evidence. And no denying the horrible,

unthinkable conclusion they suggested.

Both sets of footprints were robotic. Both sets. Donald, designed, programmed, trained in police

work, could not avoid making the obvious and terrifying inference.

But it could not be. It couldn’t be.

Donald devoutly wished for Alvar Kresh to arrive. Let a human take over, let someone who could

get used to such things deal with the impossible thought that a robot could have struck Fredda Leving from

behind.

THE night sky roared past Sheriff Alvar Kresh, and the scattered lights of buildings in Hades’s

outskirts gleamed bright below. He looked up into the dark sky and saw the bright stars glowing down at

him. A beautiful night, a perfect night for a speed run over the city, something he only got the chance to do

on official business, and he had to be in a foul mood.

He did not care for being awakened in the middle of the night, did not care for anyone but Donald

helping him to dress.

He tried to cheer himself up, to soothe himself. He looked out into the night. Tonight was the best

weather Hades had had in a long time. No sandstorms, no dust-haze. There was even a fresh tang of

seawater blowing in off the Great Bay.

At least he could burn off his adrenaline and his anger by flying his aircar himself, rather than

leaving the chore to a robot. He took a certain pride in that. Few humans even knew how to fly an aircar.

Most people felt the chore of controlling an aircraft beneath them. They let the robots do it. No doubt most

people thought it was damned odd that Alvar liked to fly his own car. But few people were likely to say

that to the Sheriff’s face.

Alvar Kresh yawned and blinked, and punched the coffee button on the aircar’s beverage

dispenser. He was alert, clear-eyed, but there was still a shroud of tiredness over him, and the first sip of the

coffee was welcome. The aircar sped on through the night as he flew it one-handed, drinking his coffee. He

grinned. Lucky Donald isn’t here, he thought. It was stunts like flying one-handed that made it all but

impossible for him to fly his own car when Donald, or indeed any robot, was on board. One false move and

the robot would instantly leap into the copilot’s seat and take over the craft’s controls.

Ah, well. Maybe the Settlers sneered at robots, but no Spacer world could function for thirty

seconds without them. That having been said, the damned things could be incredibly infuriating all the

same.

Alvar Kresh forced himself to calmness. He had been roused from a sound sleep in the dead of

night, and he knew from bitter experience that interrupted sleep made him more edgy than usual. He had

learned long ago that he needed to do something to take the edge off himself when he was too keyed up, or

else he was likely to take someone’ s head off instead.

Alvar breathed the cool thin air. A nightflight over the desert at speed with the top open and the

wind howling through his thick thatch of white hair helped drain away some of his temper, his tension.

But crimes of violence were still rare enough in Hades for him to take them personally, to get

angry and stay that way. He needed that anger. This savage and cowardly attack on a leading scientist was

intolerable. Maybe he did not agree with Fredda Leving’s politics, but he knew better than most that neither

the Spacer worlds in general nor Inferno in particular could afford the loss of any talented individual.

Alvar Kresh watched as the city swept by below him, and began to slow the aircar. There. The

aircar’s navigation system reported that they were directly over the Leving Robotics Labs. Alvar peered

over the edge of the car, but it was difficult to get a fix on the precise building at night. He eased the car to

a halt, adjusted its position over the landscape slightly, and brought it down to the ground.

A robot ground attendant hurried over to the car and opened the door for him. Alvar Kresh stood

up and stepped out of the car, into the night.

There was a busy rummaging-about going on. A red and white ambulance aircar squatted on the

ground near Kresh’s car, its lift motors idling, its running lights on, obviously ready to lift off the moment

its patient was aboard. A squad of med-robots bustled through the main door of the lab, two of them

carrying a stretcher, the others holding feed lines and monitoring equipment hooked up to the patient.

Leving herself was not quite visible under the tangle of life-support gear. A human doctor lounged by the

hatch of the ambulance, watching the robots do the work. Alvar stood still and let the robots pass as they

carried the victim from the scene of the crime.

He watched, his anger rising inside him, as the meds carried her into their van, and watched as the

indolent human doctor eased his way into the ambulance behind his busy charges. How could anyone

commit such violence against another human being? he asked himself.

But raw, unchanneled anger would not help catch Fredda Leving’s assailant. Remain calm, he

thought. Keep your anger controlled, focused. Alvar Kresh lifted his hand to a med-robot that was carrying

a first-aid kit back to the ambulance. “What is the condition of your patient?” he asked.

The gleaming red and white med-robot regarded Kresh through glowing orange eyes. “She

received a severe head injury, but no irreparable trauma,” it said.

“Were her injuries life-threatening?” Kresh asked.

“Had we been delayed in reaching Madame Leving, her injuries could easily have been fatal,” the

robot said, a bit primly.

“However, she should recover completely, though there is the distinct possibility that she will

suffer traumatic amnesia. We shall place her in a regeneration unit as soon as we reach the hospital.”

“Very good,” Kresh said. “You may go.” He turned and watched the last of the med team climb

into the ambulance and take off into the night. Good that she would recover, but it could be very bad indeed

if she did suffer amnesia. People with holes in their memories made for bad witnesses. But the words of the

med-robots changed the nature of the case. Her injuries could easily have been fatal. That changed a simple

assault with a deadly weapon case into one of attempted murder. At last he turned to go inside the building,

to see what Donald and his forensic team had come up with.

“ALL right, Donald,” Kresh said as he came in, “what have you got?”

“Good evening, Sheriff Kresh,” Donald replied, speaking with a smooth and urbane courtesy. “I

am afraid we do not have a great deal. The crime scene does not tell us much that we can use, though of

course you may well note something we have missed. I have not been able to form a satisfactory

interpretation of the evidence. Did you have the opportunity to examine my update regarding the

maintenance robot’s statements?”

“Yes, I did. Damn strange. You did right to get the data out of him, but I don’t want to take any

chances on the rest of the staff robots. I don’t even want to get near them myself. I want the department’s

staff roboticists to interview them all--carefully.” Normally the police roboticists dealt with robots who had

been tricked into this or that by con artists skilled in lying to robots and convincing them to obey illegal

orders under some carefully designed misapprehension. A man could make a pretty fair living convincing

household robots to reveal their masters’ financial account codes. It would do the roboticists good to deal

with something a little out of the ordinary.” But we can worry about that tomorrow. Is the scene clear?”

“Yes, sir. The observer robots have completed their basic scan of the area. I believe you can

examine the room without danger of destroying clues, so long as you practice some care.”

Alvar looked closely at Donald. After a lifetime of dealing with robots, he still did that, still

looked toward the machines as if he could read an emotion or a thought in their expressions or postures. On

some robots, on the very rare ones that mimicked human appearance perfectly, that was at least possible.

But there were precious few of those on Inferno, and with any other robot type the effort was pointless.

Even so, the habit gave him a moment of time to consider the indirect meaning of the robot’s

words. No “satisfactory interpretation of the evidence.” What the hell did that mean? Donald was trying to

tell him something, something the robot did not choose to say directly, for fear of presuming too far. But

Donald was never cryptic without a purpose. When Donald got that way, it was for a reason. Alvar Kresh

was tempted to order Donald to explain precisely what he was suggesting, but he restrained his impatience.

It might be better to see if he could spot the point that was bothering Donald himself, evaluate it

independently without prejudgment. There was, of course, precious little a robot would miss that a human

could notice. Much of what Donald had said was so much deferential nonsense, salve for the ego. But the

words Donald had used were interesting: “The crime scene does not tell us much that we can use.” As if

there were something there, but something distracting, meaningless, deceptive. So much for avoiding

prejudgment, Alvar thought sardonically. That was the trouble with robot assistants as good as Donald--you

tended to lean on them to much, let them influence your thinking, trust them to do too much of the

background work. Hell, Donald could probably do this job better than me, Alvar thought.

He shook his head angrily. No. Robots are the servants of humans, incapable of independent

action. Alvar stepped through the doorway, fully into the room, and began to look around.

Alvar Kresh felt a strange and familiar tingle course through him as he set to work. There was

always something oddly thrilling about this moment, where the case was opened and the chase was on. A

strange chase it was, one that started with Alvar not so much as knowing who it was that he pursued.

And there was something stranger still, always, about standing in the middle of someone’ s very

private space with that person absent. He had stood in the bedrooms and salons and spacecraft of the dead

and the missing, read their diaries, traced their financial dealings, stumbled across the evidence of their

secret vices and private pleasures, their grand crimes and tiny, pathetic secrets. He had come to know their

lives and deaths from the clues they left behind, been made privy by the power of his office to the most

intimate parts of their lives. Here and now, that began as well.

Some work places were sterile, revealing nothing about their inhabitants. But this was not such a

place. This room was a portrait of the person who worked here, if only Alvar could learn to read it.

He began his examination of the laboratory. Superficially, at least, it was a standard enough setup.

A room maybe twenty meters by ten. Inferno was not a crowded world by any means. People tended to

spread out. By Inferno standards it was an average-sized space for one person.

There were four doors in all, in the corners of the room, set into the long sides of the room: two on

the exterior wall, leading directly to the outside, and two on the opposite, interior wall, leading into the

building’ s hallway. Alvar noted that the room was windowless, and the doors were heavy; they appeared to

be light-tight. Close them, cut the overhead lights, and the room would be pitch-black. Presumably they did

some work with light-sensitive materials in here. Or perhaps they tested robot eyes. Would the reason for,

or the fact of, a light-tight room be important or meaningless? No way to know.

Alvar and Donald stood by one of the interior doors, toward what Alvar found himself thinking of

as the rear of the room. But why is this end the rear? he wondered. No one specific thing, he decided. It

was just that this end of the room seemed more disused. Everything was boxed up, in storage. The other

end clearly was put to more active use.

Work counters ran most of the length of the room, between the pairs of doors. There were

computer terminals on the counters. The walls held outlets for various types of power supplies, and two or

three hookups Kresh could not identify. Special-purpose datataps, perhaps.

Every square centimeter of the countertops seemed to have something on it. A robot torso, a

disembodied robot head, a stack of carefully sealed boxes, each neatly labeled Handle with Care.

Gravitonic Brain. Alvar frowned and looked at the labels again. What the devil were gravitonic brains? For

thousands of years, all robots had been built with positronic brains. It was the positronic brain that made

robots possible. Gravitonic brains? Alvar knew nothing at all about them, but the name itself was

unsettling. He did not approve of needless change.

He filed away the puzzle for future reference and continued his survey of the room. All of the

room’ s side counters were full of all sorts of mysterious-looking tools and machines and robot parts. Yet

there was no feel of chaos or mess about the room; all was neat and orderly. There was not even so much as

an air of clutter. It was merely that this entire room was in active use by someone who seemed to have

several projects going at once.

Two large worktables sat in the center of the room. A half -built robot and a bewildering collection

of parts and tools were spread out on one table, while the other was largely empty, with just a few odds and

ends here and there around the edges.

Wheeled racks of test equipment stood here and there about the room. A huge contraption of

tubing and swivels stood between the two tables. It was easily three meters tall, and took up maybe four

meters by five in floor space. It was on power rollers, so it could be pushed out of the way when not in use.

“What the devil is that thing?” Alvar asked, stepping toward the center of the room.

“A robot service rack,” Donald replied, following behind. “It is designed to clamp onto a robot’s

hard-attachment points and suspend the robot at any height and in any attitude, so as to position the needed

part of the robot for convenient access. It is used for repairs or tests. I thought it a large and awkward thing

to keep in the middle of the room. It would certainly interfere with easy movement between the two

worktables, for example.”

“That’ s what I was thinking. Look, you can see the empty space along the wall on the rear end of

the room. They rolled it over there when they weren’t using it. So why is it out in the middle of the room?

What good is an empty robot rack?”

“The clear implication is that there was a robot in it recently,” Donald said.

“Yes, I agree. And notice the empty space on the center of the empty worktable. About the right

size for another robot there, too. Unless they moved the same robot from the table to the rack, or vice versa.

Maybe that was the motive for the attack? The theft of one or two experimental robots? We’ll have to

check on all that.”

“Sir, if I could direct your attention to the floor in front of the service rack, Fredda Leving’s

position on it has been marked out--”

“Not yet, Donald. I’ll get there. I’ll get there.” Alvar was quite purposefully ignoring the pooled

blood and the body outline in the center of the room. It was too easy to be distracted by the big, obvious

clues at a crime scene. What could the body outline tell him? That a woman had been attacked here, bled

here? He knew all that already. Better to work the rest of the room first.

But one thing was bothering him. This room did not match Fredda Leving’s character. He knew

her slightly, from the process of ordering Donald, and this place did not fit her. It had the feel of a male

domain, somehow. Tiny details he had seen but not noted suddenly registered in Alvar’s consciousness.

The size and cut of a lab coat hanging by the door, the size of the dust-sealed lab shoes sitting on the floor

beneath the lab coat, certain tools stored on wall hooks that would be well out of reach for the average-

sized woman.

And there was, indefinably, something about the neatness of this room that spoke of a shy,

compulsive, tidy man, something that did not match an assertive woman like Fredda Leving. If she lived up

to her very public image, her lab would be a mess, even after the robots got through cleaning, for she would

flatly refuse to let them near most of it. The great and famous Fredda Leving, hero of robotics research, the

crown jewel of science in Inferno, was not a compulsive fussbudget--but the occupant of this room clearly

was.

Alvar Kresh stepped back into the hallway and checked the nameplate next to the door. Gubber

Anshaw, Design and Testing Chief; it read. Well, that solved one minor mystery and replaced it with

another. It wasn’t Leving’s lab, but Anshaw’s, whoever he was.

But what was Fredda Leving doing in Anshaw‘s lab, presumably alone with her assailant, in the

middle of the night?

Kresh went back into the lab and walked around the rest of the room, careful not to touch

anything, determined to resist the urge to go and look at the spot where the body fell. The room was a

perfect forest of potential clues, jam-packed with gadgets and hardware that might have some bearing on

the case, if only Alvar knew enough about experimental robotics. Was there indeed something missing,

some object as big as an experimental robot, or as tiny as an advanced microcircuit, whose theft might

provide a motive for this attack?

But what was the nature of the attack? He knew nothing so far.

At last, quite reluctantly, after working the rest of the crime scene and coming up with very little

for his efforts, Alvar moved toward the center of the room, the center of the case, the scene of the attack.

There it was, on the floor, between the two worktables, a meter or so in front of the large robot

service rack. A pool of blood, a blotchy, irregular shape about a meter across. The body as found was

indicated in a glowing yellow outline that followed the contours of the body perfectly, down to the

sprawled-out fingers of the left hand. The fingers seemed to be reaching toward the door, reaching for help

that did not come.

Some errant part of Kresh’ s mind found itself wondering how they did that, how they put down

that perfect outline. Robots in the Sheriff’s office knew how, but he did not.

But no. It was tempting to distract himself with side issues, but he could not permit himself the

luxury. He knelt down and looked at what he had come to see. He had forced himself not to notice the

smell of drying blood until this moment, but now he had to pay attention, and the heavy, acrid, rotting odor

seemed to surge into his lungs. A wave of nausea swept over him. He ignored the stench and went on with

his grim task.

The pool of blood was much smeared and splashed about by the med-robots, their footprints and

other marks badly obscuring the story the floor had to tell. But that was all right. Donald would have

images of the floor recorded straight off the med-robots’ eyes, what they saw the moment they came in.

Computer tricks could erase all traces of the med-robots from whatever images the police observer/forensic

robots had made, reconstruct the scene exactly as it was before. Some of his deputies only worked off such

reconstructions, but Kresh preferred to work in the muddled-up, dirtied-up confused mess of the real-world

crime scene.

The blood had virtually all clotted or dried by now. Kresh pulled a stylus from his pocket and

tested the surface. Almost completely solidified. It always amazed him how fast it happened. He looked up

and from the pool of blood, noted the pattern of a med-robot’s foot and then noted something else he had

seen before but merely filed away until he had seen the whole room. Two other sets of prints, clearly from

robotic feet, but wholly different from the med-robot’s treads. One set of prints led out the front interior

into the hallway, the other out the front exterior door to the outside of the building.

And the two sets of prints might be different from the med-robot’s, but they were utterly identical

to each other.

Two sets of mystery prints, exactly like each other.

“That’s what’s bothering you, isn’t it, Donald?” Alvar said, standing back up.

“What is, sir?”

“The robot footprints. The ones that make it clear that a robot--two robots--walked through the

pool of blood and left Fredda Leving, quite possibly to die.”,

“Yes, sir, that did bother me. The flaw is obvious, but it is what the evidence suggests.”

“Then the evidence is wrong. The First Law makes it impossible for any robot to behave that

way,” Alvar said.

“And therefore,” a brash new voice suddenly declared from the door Alvar had come through,

“therefore, someone must have staged the attack to make it seem like a robot--two robots--did it. Brilliant,

Sheriff Kresh. That took me all of thirty seconds to figure out. How long have you been here?”

Alvar turned around and clenched his teeth to keep from letting out a string of curses. It was

Tonya Welton. A tall, dark-skinned woman, long-limbed and graceful, she stood just inside the doorway, a

tall, dusky-yellow robot behind her. Alvar Kresh would not even have noticed the robot except that Welton

was a Settler. He always got a certain grim pleasure out of seeing robots inflicted on the people who hated

them so passionately, but at the moment at least, Welton seemed bothered not at all. Her expression was

one of amused condescension.

She was dressed in a disturbingly tight and extravagantly patterned blue one-piece bodysuit. The

Spacer population on Inferno preferred much more modest clothing and far more subdued colors. On

Inferno, robots were brightly colored, not people. But no one had told the leader of the Settlers on Inferno

that--or else she had ignored them when they did tell her. Welton, more than likely, had gotten it backwards

deliberately.

But what the hell was Tonya Welton doing here now?

“Good evening, Lady Tonya,” Donald said in his smoothest and most urbane tones. It was rare,

surpassing rare, for a robot to speak except when spoken to, but Donald was smart enough to know this

situation needed defusing. “What a pleasant surprise to have you join us here.”

“I doubt it,” Tonya Welton said with a smile that Alvar scored as being at least an attempt at

courtesy. “Forgive me, Sheriff Kresh, for my rather rude entrance. I’m afraid the news about Fredda Leving

unsettled me. I tend to be a bit sharp-tongued when I am upset.”

And at all other times, Kresh thought to himself. “Quite all right, Madame Welton,” he replied in a

tone of voice that made it clear it was anything but all right. “I don’t know what business brings you here,

but there has been an attack on one of Inferno’ s top scientists here tonight, and I cannot allow anything to

interfere. This is an official investigation, Madame Welton, which has nothing to do with the Settlers, and

I’m afraid I must ask you to leave.”

“Oh, no, I can’t. You see, that’s why I’m here. Governor Grieg himself called me not an hour ago

and asked that I come here tonight and join in your investigation.”

Alvar Kresh stared at the Settler woman in openmouthed astonishment. What in the devil was

going on here? “Are we done here, Donald?” he asked. “ Anything else I need to see immediately?”

“No, sir, I think not.”

“Very well, then, Donald. Seal this room as a crime scene. No one in or out. Just now, I think

perhaps Madame Welton and I need to have a little talk, and this is not the place for it. Join us when you

have completed the arrangements.”

“Very good, sir,” Donald said.

“Let’s go to my car, Madame Welton. We can talk there.”

“Yes, let’s do that, Sheriff,” Tonya Welton said, rather stiffly. “There are a few things we need to

get straight. Come along, Ariel.”

ALVAR Kresh and Tonya Welton sat down in the Sheriff’s aircar, facing each other, both of them

clearly wary. Welton’s robot, Ariel, stood behind her mistress, fading into the background as far as Kresh

was concerned. Robots didn’t count.

“All right, then,” he said. “What’s all this about? Why did the Governor call you in? What

possible connection does this case have with the Settlers?”

Tonya Welton folded her hands carefully and looked Kresh straight in the eye. “In a day or two

you’ll get the answer to that. But for now, it’s classified.”

“I see,” Kresh said, though he most certainly did not. “I’m afraid that is not much of an

explanation.”

“No, and I am sorry for that, but my hands are tied. There is, however, one thing I can tell you that

will at least in part explain my being here. I do have authority to be here, under the agreement permitting a

Settler presence on this world. I have the right to protect the safety of my employees.”

“I beg your pardon?”

“Oh, yes, didn’t you know?” Tonya Welton asked. “Fredda Leving is working for me.”

There was a half minute’ s dead silence. Fredda Leving was famous, one of the top roboticists on

the planet. Most Infernals regarded her not as a person, but as a planetary asset. For her and her labs to be

reduced to mere employees of the Settlers--Welton might as well have announced that the Settlers had

purchased Government Tower, or gotten title to the Great Bay.

At last Alvar found his voice again. “If I could make a suggestion, Madame Welton, I think it

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ISAACASIMOV’SCALIBANBYROGERMacBRIDEALLENTofivewondrouscreatures,namedintheorderoftheirappearanceonthisplanet:AaronVictoriaBentonJonathanAndMeredithAcknowledgmentsThisbookwouldnothavebeenpossiblewithoutthesupport,andespeciallythepatience,ofDavidHarris,JohnBetancourt,ByronPreiss,SusanAllison,GinjerBuc...

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