As the crowd strolled back up the street, Ice pointed out the other men who had volunteered for the race. Cutter was a well-known crew leader from Manchester. He wore expensive-looking shoes and a red tracksuit made out of a satiny fabric that shimmered beneath the lights. Ganji was one of the London runners-a Persian emigrant in his early twenties with a slender, athletic build. Malloy was the fourth runner, short and muscular with a broken nose. According to Ice, he worked as a part-time bartender in dance clubs around London.

They reached the north end of the market and stood across the street near a butcher’s shop that specialized in organ meats. Gabriel’s hunger had vanished and he felt highly aware of his new surroundings. He heard laughter and people talking, smelled a faint garlic odor that came from the Thai restaurant down the street. The cobblestones were wet and looked like pieces of shiny black obsidian.

“No fear,” Ice whispered like an incantation. “No fear…No fear…”

The market building rose up in front of the Free Runners like a massive wall. Gabriel realized that he would have to climb up the wrought-iron gate to the clear Plexiglas awning that was about thirty feet above the cobblestones. The awning was held in place by steel poles that came out of the wall at a forty-five-degree angle. He would have to shimmy up one of the poles to reach the roof.

Suddenly, it was quiet and everyone was watching the four runners. Jugger stepped in front of Gabriel and handed him a pair of fingerless climbing gloves. “Put these on,” he said. “The steel gets damn cold at night.”

“I want the money when I’m done.”

“No worries, mate. I promise.” Jugger slapped Gabriel on the shoulder. “You’re a scrappy one. You are indeed.”

Cutter’s red tracksuit appeared to glow under the security lights. He wandered over to Gabriel and nodded. “You’re from the States?”

“That’s right.”

“You know what a ‘splat’ is?”

Jugger looked flustered. “Come on now. We’re just about to start.”

“Just helping out,” Cutter said. “Bit of education for our American cousin. A ‘splat’ is when you don’t know what you’re doing and you fall off a roof.”

Gabriel stood still and peered into Cutter’s eyes. “There’s always a chance you’ll fall. The question is-do you think about it? Or are you able to keep it out of your mind?”

Cutter’s cheek twitched near the corner of his mouth, but he controlled his fear and spit on the ground.

“All bets in,” a voice said. “All bets in.” And then the crowd parted and Mash stood before them.

“This is happening because Manchester threw down a challenge to the London crews. May the best runner win and all that crap. But what we do is more than one race. Most of you know that. Walls and fences won’t stop us. The Vast Machine can’t track us. We make our own map of this city.”

Mash raised his right hand and counted. “One, two…”

Cutter darted across the street and the rest of them followed. The wrought-iron gates were designed to resemble flowers and vines. Using these gaps as footholds, Gabriel began to climb.

When they reached the top of the gate, the slender Ganji slipped between the awning and the wall. Cutter followed, then Gabriel and Malloy. Their shoes made a thumping sound on the clear plastic, and the awning trembled. Gabriel grabbed one of the poles that jutted out from the top of the wall. The steel pole was as narrow as a rope and difficult to hold.

Hand over hand, his body hanging from the pole, he pulled himself up. When he reached the end of the pole, Gabriel found a three-foot space between the holding bracket and the top of the white stone facade that ran around the edge of the roof. How am I supposed to get up? he thought. Can’t be done.

Gabriel glanced left and watched the three other men trying to manage the dangerous transition to the roof. Malloy had the strongest arms and shoulders. He swung himself around so that he was on the top of the pole, his eyes looking downward. Still holding on tightly, he tried to shift his weight to the lower part of his body. When his feet were in the right position, he let go of the pole, grabbed for the top of the facade, and fell. Malloy hit the Plexiglas awning and began to roll off, but he grabbed the edge and stopped. Still alive.

Gabriel forgot about the others and concentrated on his own movements. Imitating Malloy’s strategy, he swung himself around so that his feet were on the top edge of the slanted pole, his hands just a few inches higher. He hunched up like a man squeezed into a box, put the full weight of his body on his feet, and then threw himself upward. Gabriel grabbed the white stone facade; it was like a little wall around the border of the roof. Using all his arm strength, he pulled himself up and over the top.

The slate roof of Smithfield Market lay before him like a dark gray road. The night sky was clear; the stars were precise points of bluish-white light. Gabriel’s mind was beginning to glide into the consciousness of a Traveler. He observed the reality around him as if it were an image on a screen.

Cutter and Ganji darted past him, and Gabriel returned to the moment. The loose slates on the roof made a clicking sound as he chased after his two opponents. A few seconds later he reached the first gap in the roof: a thirty-foot section where an intersecting road divided the building. Concrete arches holding sheets of ivory-colored fiberglass passed over the gap, but the fiberglass looked too fragile to support his weight. Moving like a tightrope walker, he stepped on an arch and crossed over to the other side of the roof. Cutter and Ganji were pulling away from him. His eyes moved past them to the stars, and it seemed like all of them were running toward the dark expanse of space.

At the second gap, the fiberglass sheets had been ripped away and only the concrete arches spanned the roof. Remembering what Ice had told him, Gabriel concentrated on his feet and tried not to look beyond them to the road, where a handful of curious Free Runners gazed upward at their progress.

Gabriel was relaxed and moving easily, but he was losing the race. He had to stop and traverse a third set of arches. Halfway across, he watched Cutter and Ganji jump onto a steeply angled metal awning that passed across Long Lane to the boarded-up brick building that had once been the market’s slaughterhouse.

Cutter had sprinted down the length of the roof. Now he was cautious, straddling the top of the awning and walking slowly. Ganji was about five yards away and decided to take the lead. He stepped onto the left side of the awning, ran three steps, and lost his footing. He was falling, rolling, screaming as his legs went over the edge and his hands grabbed onto the rain gutter.

Ganji dangled in the air. His crew was on the street below him, yelling at him to hold on-just hold on!-they would come up and save him. But Ganji didn’t need their assistance. He pulled himself up slightly and got one leg onto the slippery metal awning, followed by his entire body. By the time Gabriel reached the area, the Free Runner was lying facedown. Pushing with his toes and extending his hands, he moved toward safety.

“You all right?” Gabriel shouted.

“Don’t worry about me. Keep going! London pride!”

Cutter had been far ahead of Gabriel, but the advantage disappeared on the flat roof of the slaughterhouse. The Free Runner darted back and forth looking for a fire escape or a security ladder that would get him down to the road. Moving to the southwest corner of the building, Cutter crawled over a low wall, grabbed a drainpipe, and swung himself out into space. Gabriel ran to the corner and looked down. Cutter was sliding down the pole, inch by inch, controlling his movement with the sides of his climbing shoes. When he saw Gabriel, Cutter stopped for second and nodded to his opponent.