This is the serialisation of the forthcoming novel as printed in four parts in Analog Science Fiction and Fact 2007

Being literally thrown into an unfamiliar environment forces a person to adapt—and familiar ways of doing that may not be enough.

Garth Diamandis looked up, and saw a woman in the sky.

The balcony swayed under him; distant trees wavered in the hot afternoon air though there was no breeze. A twist of little clouds pirouetted far overhead, just beneath the glitter and darkness of the city that had exiled Gareth to this place so many years ago. Well below the city, only a thousand feet up at this point, a single human form had appeared out of the light.

She rotated up out of Garth's view and he had to wait several minutes for her to come back around. Then, there she was: gliding with supernatural grace over the tall, ragged wall that rimmed the world at its nearer end. Behind her, infinite air beckoned, forever out of reach of Garth and the others like him. Ahead of the silent woman, a likely tumble into quickly moving trees, broken limbs and death. If she wasn't dead already.

Someone tried to escape, he thought—an act that always ended in gunshots or bloody thrashing beneath a swarm of piranhawks. This one must have been shot cleanly by the day watch for she was spiraling across the sky alone, not attended by a retinue of blood droplets. And now the spin-gale was teasing the fringes of her outlandish garment, slowing her; bringing her down.

Garth frowned, for a moment forgetting the aches and pains that bedeviled him all day and all night. The hovering woman's clothes had been too bright and fluttered too easily to be made of the traditional leather and metal of Spyre.

As the world turned the woman receded into the distance, frustrating Garth's attempt to see more. The ground under his perch was rotating up and away along with the whole cylindrical world; the black-haired woman was not moving with it but rather sailing in majestically from one of the world's open ends. But Spyre made its own winds as it turned, and those winds would pull her to its surface before she had a chance to drift out the other side.

She would have sped up by that time, but not enough to match Spyre's rotation. Garth well knew what happened when someone began clipping the treetops and towers at several hundred miles per hour. He'd be finding pieces of her for weeks.

The ground undulated again. Frantic horns began echoing in the distance—an urgent conversation between the inner surface of Spyre and the city above.

Watching the woman had been an idle pastime, since it looked as though she was going to come down along the rail line. People with more firepower and muscle than Garth owned that; they would see her in a few moments and bring her down. Her valuable possessions and clothes would not be his.

But the horns were insistent. Something was wrong with the very fabric of Spyre, an oscillation building. He could see it in the far distance now: the land heaved minutely up and down. The slow ripple was making its way in his direction; he'd better get off this parapet.

The archway opening onto the balcony had empty air behind it and a twenty-foot drop to tumbled stones. Garth hopped over the rail without hesitation, counting as he fell. “One pilot, two pilot, three—” He landed among upthrusts of stabbing weed and the cloud-like brambles that had taken over this ancient mansion. Three seconds? Well, gravity hadn't changed, at least not noticeably.

His muscles creaked as he stood up, but climbing and jumping were part of his daily constitutional, a grim routine aimed at convincing himself he was still a man.

He stalked over the crackling grit that painted a tiled dance floor. Railway ties were laid callously across the fine pallasite stones; the line cleaved the former Nation of Arbath like a whip-mark. Garth stepped onto the track daringly and stared down it. The great family of Arbath had not reached an accommodation with the preservationists and had been displaced or killed, he couldn't remember which. Rubble, ruins, and new walls sided the tracks; at one spot an abandoned sniper tower loomed above the strip. It swayed now uneasily.

The tracks converged in perspective but also rose with the land itself, a long graceful curve that became vertical if he followed it far enough. He didn't look that far, but focused on a scramble of activity taking place about a mile distant.

The Preservation Society had planted one of their oil-soaked sidings there like an obscene graffito. Some of the preservationists were pouring alcohol into the tanks of a big turbine engine that squatted on the tracks like an idol to industrialism. Others had started a tug and were shunting in cars loaded with iron plating and rubble. They were responding to the codes brayed out by the distant horns.

They were so busy doing all this that none had noticed what was happening overhead.

"You're crazy, Garth.” He hopped from foot to foot, twisting his hands together. When he was younger he wouldn't have hesitated. There was a time when he'd lived for escapades like this. Cursing his own cowardice, Garth lurched into a half run down the tracks—in the direction of the preservationist camp.

He had to prove himself more and more often these days. Garth still sported the black cap and long sideburns that rakes had worn in his day, but he was acutely aware that the day had come and gone. His long leather coat was brindled with cracks and dappled with stains. Though he still wore the twin holsters that had once held the most expensive and stylish dueling pistols available in Spyre, nowadays he just carried odd objects in them. His breath ratcheted in his chest and if his head didn't hurt, his legs did, or his hands. Pain followed him everywhere; it had made crow's-feet where once he'd outlined his eyes in black to show the ladies his long lashes.

The preservationist's engine started up. It was coming his way so Garth prudently left the track and hunkered down beneath some bushes to let it pass. He was in disputed land, so no one would accost him here, but he might be casually shot from a window of the train and no one would care. While he waited he watched the dot of the slowly falling woman, trying to verify his initial guess at her trajectory.

Garth made it the rest of the way to the preservationist camp without attracting attention. Pandemonium still reigned inside the camp, with shaven-headed men in stiff leather coats crawling like ants over a second, rust-softened engine, under the curses of a supervisor. The first train was miles up the curve of the world now, and if Garth bothered to look down the length of Spyre, he was sure he would see many other trains on the move as well. But that wasn't his interest.

Pieces of the world fell off all the time. It wasn't his problem.

He crept between two teetering stacks of railway ties until he was next to a pile of catch-nets the preservationists had dumped here. Using a stick he'd picked up along the way, he snagged one of the nets and dragged it into the shadows. Under full gravity it would have weighed several hundred pounds; as it was, he staggered under the weight as he carried it to a nearby line of trees.

She was going by again, lower now and fast in her long spiral. The woman's clothes were tearing in the headwind, and her dark hair bannered behind her. When Garth saw that her exposed skin was bright red he stopped in surprise, then redoubled his efforts to reach the nearest vertical cable.