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cable.
Let me have a look, Devray said. Kresh stepped back and let the younger man
peer into the robot s interior. It mean anything to you? he asked.
Devray pulled his head out, a lot of astonishment on his face. Burning
devils. A restrictor.
What? Kresh said.
A restrictor. A broken-off connection point for a restrictor. Someone took
the restrictors off a batch of New Law robots, modified them somehow to react
to a different control system, and plugged them into these SPRs.
Kresh opened his mouth to speak, but no words came out. The SPRs shut down by
restrictors removed from New Law robots? That was diabolical.
Every New Law robot had a restrictor built into it. In principle, at least,
the idea was simple enough. The restrictors saw to it that any New Law robot
attempting to leave Purgatory would be shut down as it tried to go. It was
supposed to be impossible to remove the device without destroying the robot.
No restrictor-wearing robot could function outside the area permitted by the
restrictor--which was to say, the island of Purgatory. The precise workings of
the system were a closely held secret. Even Kresh did not know exactly how it
was supposed to work.
But he did know the operative word was supposed, for the obvious fact was
that the system did not work. Every rustback robot that left the island was a
testament to that. That there was a traffic in them, a regular business, and
that made it plain that it was not a question of occasional lapses or isolated
violations. Rustbacking was more than just a business--it was a whole criminal
industry, a highly sophisticated operation.
And one that was now tied into the assassination of the Governor. A gang of
rustbackers hand found a way to tamper with the Governor s own security
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robots. How the hell could they trace that leak?
You re sure that s a piece off a New Law robot s restrictor? Kresh demanded.
Absolutely, said Fredda Leving. It was what I was looking for when I
started checking the Sapper robots.
But I don t understand. We re still on the island. Why should restrictors
turn off the security robots?
They must have been modified in some way, Fredda said. Clearly they
weren t working on a geographic basis, because the Sappers were working fine
during the party. My guess is that they were modified to deactivate the robots
on some sort of signal. Hyperwave, or maybe even old-fashioned radio. No one
uses radio anymore--but that fact right there would make it perfect for this
sort of job. The signal would be undetectable with any sort of modern
equipment. Clearly the restrictors have been modified not only to shut down
the robots in some different way, but also to be removable in a hurry. Except
this restrictor didn t come out quite as easily as it was supposed to.
But where the devil did they get the restrictors to put on the SPRs?
asked Devray.
There were times it was more than clear to Kresh that Devray did not think in
terms of crime and victim and criminal. He was better suited to forest
management than murder investigation.
The spare parts bin, Leving said. Obviously, they used restrictors they had
peeled off New Law robots. Rustbackers did this. No one else could have.
Well, one thing is for sure, Kresh said. Whoever did this worked in a
rustbacker lab at some point. He or she knew how to get these things out, and
do it in a hurry.
A rustbacker, Fredda said. Maybe that can point us toward a motive for the
murder.
Maybe, Alvar said. At least now we can get started.
Donald 111 was in a very slight state of shock, and it was with a great sense
of relief that he found that his duties required him to be alone.
The SPRs had been tampered with. They had been shut down, useless for security
work. Kresh had comforted him with the knowledge that Grieg had died with
fifty robots to protect him. One more could have done no good. But the fifty
had been useless, meaningless. One functioning robot could easily have made
the difference. Worse, it was the deployment of the SPRs that had doomed
Grieg--and Donald had urged their deployment.
Robots on the planet Inferno had always been built with extremely high
First Law, and had been known to freeze up on occasions such as this, when
they learned they could have prevented harm to a human. But Donald knew better
than that. Yes, he could have saved Governor Grieg--if he had been possessed
of information known to no one but those who killed the Governor. He could
have saved him--if he had been here, at the Residence, instead of many
kilometers away, with Kresh, performing his normal duties. He could have saved
the Governor if a half-dozen impossible things had happened.
No. No. There was nothing he could have done outside the world of if-
only. Here, in reality, it was never possible to avoid all risk, all danger.
It was never possible to defend against attackers with as many resources, with
as much willingness to take risks, as the killers of Governor Grieg.
But still, he needed to calm himself, to talk himself down from the idea that
he could have done anything. So it was just as well he had work to do, and the
need to do it in private.
There was a great deal more to a major investigation than discovering clues.
It was, in many ways, as much a management operation as anything else, as
Donald 111 had reason to know. There were all the logistical questions of
bringing in robots and human personnel and all sorts of equipment. There was
an evidence center to set up, where all the data could be stored safely, and
the physical evidence protected from tampering and made available for
examination. There was a press center to establish, accommodations for the
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investigation team and the press and the hangers-on and the VIPs who would
inevitably arrive.
There were those, and a thousand other details, to deal with--but then, Donald
had been quite literally made for the job. Though he was obliged to devote a
lot of his time to duties as Sheriff Kresh s personal assistant, his primary
responsibility was to Sheriff Kresh s office, to the efficient handling of the
detail work--and that work he could only do when the Sheriff did not require
him to be present--such as at the present moment. Donald
barely dared admit it even to himself, but there were unquestionably times
when it was a distinct relief to get the Sheriff out from underfoot so he
could get on with his main task of managing the Sheriff s office.
Management was in large part a matter of communications, of contacting the
proper robot and relaying orders, of locating the proper equipment and
arranging for it to be transported to where it would be needed. Most, if not
all, of it could be handled via hyperwave, which in turn meant that Donald
could be remarkably productive while standing stock-still, with little or no
outward evidence that he was even switched on, let alone extremely busy.
Donald had learned the hard way to keep a low profile when so engaged.
There were more than a few humans who objected, as a matter of principle, to
the sight of a seemingly idle robot. It offended them to see Donald standing
stock-still. They would give near-useless orders just for the sake of getting
him busy. For that reason, he preferred to make sure he was safely out of
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