As prosecutor he appointed Luis Estevez Saguaro, Hakim's second on the search team. Martin himself presided as judge.

The War Mother listened to the trial silently, its painted black and white designs prominent in the brightly illuminated schoolroom. All eighty-two children sat in quiet attendance as Martin went over the rules.

Luis presented the older evidence, and then outlined the new. Their data on the debris fields had increased enormously. The assay matches seemed indisputable.

Hakim questioned the conclusiveness of the data at this distance. Luis Estevez called on Li Mountain to explain again the functioning of the Dawn Treader'sremotes and sensors, the accuracy of observations, the science behind the different methods. The children had heard much of it before. They were reminded nevertheless.

Luis Estevez withheld his trump card until the final phase of the six-hour trial. Hakim fought vigorously to discredit this last bit of evidence, explaining the statistics of error on such observations at this distance, but the news made the children gasp nonetheless, more in horror than surprise.

Less than two hours away, at their present speed of three quarters c, the cloud of pre-birth material surrounding Wormwood offered one more startling confirmation.

The residue of Wormwood's birth, a roughly shaped ring around the system, with patches and extrusions streaming billions of kilometers above the ecliptic, had been extensively mined, as suspected, and few volatiles remained. No cometary chunks were left to fall slowly around Wormwood; the civilization had many thousands of years before depleted these resources as part of a program of interstellar exploration.

Some leftovers from that program still floated amid the scoured dust of the irregular ring, spread here and there across the billions of kilometers like sand in an ocean tide.

The search team, probing the nearest extent of the ring, had found artificial needle-shaped bodies, the largest no more than a hundred meters long; inert now, perhaps experimental models, perhaps ships that had malfunctioned and been abandoned after being stripped of fuel and internal workings.

Luis projected for the jury, and all the children, graphics of what these needle ships looked like in their cold dusty junkyards. He then produced pictures they were all familiar with: the shapes of the killer machines when they entered Earth's solar system, when they burrowed into the asteroids between Mars and Jupiter, and into the Earth itself:

Long needles. Identical in shape and size.

Hakim valiantly argued that these shapes were purely utilitarian, that any number of civilizations might produce vessels such as these, designed to fly between the stars. But the shapes of Ships of the Law, including Dawn Treader, countered that argument. Space allowed many designs for interstellar craft.

The conclusion seemed inevitable: dead killer machines orbited the extreme perimeter of the Wormwood system.

Hakim's next suggestion was that this system had itself been entered by Killers, that the inhabitants had been wiped from their worlds, and that the worlds were not perpetrators, but victims. Luis countered that in such a case, it was their duty to expunge the final traces of the Killers from the victim's corpse.

And if there were survivors?

That did not seem likely, judging from Earth's experience.

But the Earth, Hakim argued, had been an extreme case; the Killers had been faced with strong, eventually fatal opposition. Perhaps they would behave differently with more time to perform their tasks. Perhaps there were survivors.

Luis pointed to the natural composition of Wormwood and its planets, the apparent origin of the machines themselves.

And if the machines had merely been manufactured here?

The debate went around and around, but these arguments were not convincing, however Hakim worked to make them so.

"If Wormwood is indeed the origin of the killer machines, why leave these wrecks out here for evidence?" Hakim asked, making his final attempt at a sound defense. "Why not sweep the cloud clean, and prepare for the vengeance of those you have failed to murder? Could there not be some other explanation for this evidence, allowing a reasonable doubt?"

No one could answer. No one doubted the evidence, however.

The jury was sequestered in unused quarters near the schoolroom.

The verdict was two hours in coming.

It was unanimous.

Wormwood must be cleared of all traces of Killers and their makers. Even if they had become ghosts, lost in their machines…

Hakim seemed perversely despondent that he had not presented his case more strongly. He moved to the rear of the room and curled behind the children, eyes wide and solemn.

Martin stood before the children, the weight of the judgment on his shoulders now. The hush in the schoolroom was almost deathly: no coughing, hardly a sound of breathing. The children did not move, waiting for him to issue the orders.

"We start dispersal as soon as we split," he said. "Shipboard weapons team will launch makers into the Wormwood system. There are no visible defenses, but we'll be cautious anyway. Instead of trying for three or four large-mass gravity-fuse bombs, we'll let the makers create a few thousand smaller ones out of the rocks and debris. If we fail, makers in the outer cloud will assemble their weapons and send them in later."

"That'll cost much more fuel," Hans said.

Stephanie and Harpal nodded.

"There aren't enough volatiles to make enough bombs and escape quickly. We should act as soon as possible. We'll destroy the rocky worlds first, then concentrate on the bald gas giants…"

"Destroy them, too?" Ariel asked from the rear.

"If we have enough weapons," Martin said. "We can gather the remaining volatiles for fuel from the debris clouds afterward."

"All of them?" William asked.

"Every world," Martin said.

The children thought this over somberly. They would reenact the battle fought around the Sun, centuries past. This time, they would be the murderers.

"It's not murder," Martin said, anticipating their thoughts. "It's execution. It's the Law."

That didn't make the reality any less disturbing.

"You didn't need to put me in your crew," Theresa said as they ate together in her quarters. This was the last time they would have together, alone, until the Job had been completed. These were the last four hours of the Dawn Treaderas a single ship, as they had always known her. If they survived, they might reconstruct the ship again, but chances were, they would have to make her much smaller, perhaps a tenth of her present size, and live in comparatively crowded conditions…

"I had no reason notto have you with me," Martin said.

Theresa watched him, eyes bright.

"The Pan needs to think of himself now and then," Martin said softly. "I'll work better, knowing you're with me."

"When we finish the Job, where will we go?" she asked, finishing her pie. The ship was an excellent provider; this meal, however, tasted particularly fine. There would be little time to eat after partition, and the meals would be fast and small.

"I don't know," Martin said. "They've never told us where they'll send us."

"Where would you liketo go?"

Martin chewed his last bite thoughtfully, swallowed, looked down at the empty plate. He smiled, thumped his knuckles on the small table, said, "I'd like to travel very far away. Just be free and see what there is out here. We could travel for thousands, millions of years… Away from everything."