It was only a matter of time, he decided. Admiral Fanning would come within arm's reach one day soon.

And then Hayden would kill him.

A FLOCK OF fish had wandered into the airspace inside Quartet One, Cylinder Two. Disoriented by the city lights spinning around them and caught in the cyclone of air that Rush's rooftops swept up, they foundered lower and lower in a quickening spiral, until with fatal suddenness they shot between the eaves of two close-leaning, gargoyle-coigned apartments. They banged off window and ledge, flagpole and fire escape, to end flapping and dying in a narrow street along which they'd scattered like a blast of buckshot.

Hayden ignored the cheering locals who ran out to scoop up the unexpected windfall. He paced on through the darkened alleys of Rush's night market, noticing nothing, but instinctively avoiding the grifters and thieves who also drifted through the crowds of out-country rubes. He felt slightly nauseated, and twitched at every loud laugh or thud of crate on cement.

The market was stuffed into a warren of small streets. Hayden loved walking through the mobs; even after living here for two years, the very fact that the city comprised more than one cylinder amazed him. The rusting wheels of the city provided gravity for over thirty thousand souls. Throw in the many outlying towns and countless estates that hung in the nearby air like sprays of tossed seed, and the population must push a hundred thousand. The anonymity this afforded was a heady experience for an unhappy young man. Hayden could be with people yet aloof and he liked it this way.

He was dead tired after another long day at the Fanning estate; but if he went back to the boarding house now, he would just pace until his downstairs neighbors complained. He would pull at his hair, and mutter to himself as if he were mad. He didn't want to do that.

He paused to buy a sticky bun at a vendor he favored, and continued on down a twisting run sided with fading clapboard. Slip-stream's sun was on its maintenance cycle, and darkness and chill had settled over the city. Here and there in the alleys, homeless people kept barrel fires going and charged a penny or two to anyone who stopped to warm their hands. Hayden sometimes stopped to talk to these men, whose faces he knew only as red sketches lit from below. They could be valuable sources of information, but he never revealed anything about himself to them, least of all his name.

To be so close to his goal and yet be unable to act was intolerable. He walked through the Fanning household like a dutiful servant for hours while his mind raced through scenarios: Fanning walking by distracted in a hallway; Hayden slipping into the Admiralty unnoticed by the omnipresent security police… It was all useless. The chances never came, and he was getting desperate.

He'd driven Venera Fanning again today—unnecessarily, for she could easily have taken a cable car. He wondered at her motives in riding with him. When he'd returned to his room he'd discovered that a faint scent of her perfume still hovered on his jacket. It was alluring, as she was with her porcelain complexion—marred only by the scar on her chin—and her hair the color of winter skies. Attractive she might be, but she was also without doubt the most callous human being he'd ever met. And she traded on her beauty.

How strange that she should be the first woman he'd given a ride to since arriving in Rush.

Halfway down the alley was a cul-de-sac. A knife seller had set up his table across its entrance, and had mounted targets on the blank wall at the dead end. Hayden stopped to balance a sleek dart knife on his finger. He held it out facing away from him, then at right angles to that.

"It's good in all the directions of gravity," said the vendor, who in this light was visible only as a black cutout shape with a swath of distant lamplight revealing his beige shirt collar. The black silhouette of an arm rose in an indistinct gesture. "Try it out."

Hayden balanced the knife for a second more, then flipped it and caught it behind the guard fins. He threw it with a single twitch of his wrist and it buried itself in the center of a target with a satisfying thump. The vendor murmured appreciatively.

"That's not our best, you know," he said as he waddled back to retrieve the knife. His mottled hand momentarily became visible as he pulled the knife from the wall. "Try this." Back at the table, he fished in a case and drew out a long arrow shape. Hayden took it from him and turned it over with a professional eye. Triangular cross-section to the blade, guards that doubled as fins for throwing, and a long tang behind that with another fin on its end. Its heft was definitely better than the last one.

He drought of Admiral Fanning and his purpose in coming to this city. with a muttered curse he spun and let fly the knife. It sank dead center in the smallest target.

"Son, you should be in the circus," said the vendor. Hayden heard the admiration in his voice, but it didn't matter. "Say, do you want to hang around a while and throw for the crowd? Could bring in some business."

Hayden shook his head. He wasn't supposed to have skills like knife throwing. "Just dumb luck," he said. "I guess your knives are just so good that even an idiot can hit the bull's-eye with one." Ducking his head and aware of the lameness of his excuse, he backed away and then paced hurriedly down the alley.

"That wasn't smart," said a shadow at his elbow.

Hayden shrugged and kept going. "What's it to you?"

The other fell into step beside him. Hayden glimpsed a tall, rangy figure in the dim light. "Somebody you owe a favor, Hayden."

He stepped away involuntarily. "Who the—"

The man in the shadows laughed and moved into a pale lozenge of candlelight that squeezed out between the cracks of a low window. The profile revealed was of a lean, bald man with bushy eyebrows. "Don't cha recognize me, Hayden? Last time I saw you, you were dropping out of Gavin Town on a runaway bike!"

"Miles?" Hayden just stood there, painfully aware of how meetings like this were supposed to go: the prodigal and the old soldier, laughing and slapping each other's backs in surprise and delight. They would head for a bar or something, and regale each other with stories of their exploits, only to stagger out again singing at three the next morning. Or so it went. But he'd never much liked Miles, and what did it matter, really, to find out now that one other person had survived the attack on the sun? It didn't change anything.

"What are you doing here?" he asked after the silence between them had stretched too long.

"Looking after you, boy," said the ex-soldier. "You're not happy to see me?"

"It's not that," he said with a shrug. "It's… been a long time."

"Well, long or not, I'm here now. What do you say?"

"It's… good to see you."

Miles laughed humorlessly. "Right. But you'll be thanking me before long, believe me." He started walking. "Come on. We need to find a place to talk."

Here it came, thought Hayden: the bar, the war stories, the laughing. He hesitated, and Miles sighed heavily. "Kid, I saved your ass today. If it weren't for me, you'd be on your way out of Rush by now with a permanent deport order issued against you."

"I don't believe you."

"Suit yourself." Miles started walking. After a moment Hayden ran after him.

"What do you mean?" he asked.

"'It's so good to see you, Miles. How are you doing, Miles? How did you survive Gavin Town?' " The ex-soldier glared at Hayden as they crossed a busy and well-lit thoroughfare. "Jeez, you were always a surly little runt, but let me tell you, I'm wondering whether I should have bothered faking the docs for your background check."