Becoming a Traveler gradually transformed the way he perceived the world. Gabriel could glance at someone and sense the subtle changes in their emotions. It felt like his brain was being rewired and he couldn’t quite control the process. One afternoon, when he was walking across Clapham Common, his vision widened out to a 180-degree panorama. He could see the entire world in front of him at the same moment: the beauty of a yellow dandelion, the smooth curve of a black iron railing. And there were faces, too-so many faces. People came out of shops and shuffled down the street with eyes that showed weariness and pain and occasional flashes of joy. This new vision of the world was overwhelming, but after an hour or so, the panorama gradually faded away.

As the days passed, he found himself drawn into the preparations for a gigantic party at the Vine House. Gabriel had always been wary of social gatherings, but it was a different life being “Halo”-the American Free Runner without a past or a future. It was easier to ignore his own power and go off with Jugger to buy some more beer.

THE DAY OF the party was cold, but sunny. The first guests started showing up at one in the afternoon and more kept arriving. The small rooms of Vine House were filled with people sharing food and alcohol. Children darted through the hallway. A baby slept in a sling around a father’s neck. Out in the garden, experienced runners were showing one another a variety of graceful ways to vault over a garbage bin.

As Gabriel circulated through the house, he was surprised to find out how many people knew about the race at Smithfield Market. The Free Runners at the party were a loosely organized group of friends who tried to live off the Grid. This was one social movement that the chattering faces on television would never notice-because it refused to be seen. These days, rebellion in the industrial countries was not inspired by obsolete political philosophies. True rebellion was determined by your relationship to the Vast Machine.

Sebastian went to school occasionally, and Ice still lived with her parents, but most of the Free Runners had jobs in the underground economy. Some people worked at all-night dance clubs and others served beer at pubs during football matches. They repaired motorcycles, moved furniture, and sold souvenirs to tourists. Jugger had a friend who picked up dead dogs for the Lambeth Council.

The Free Runners bought their clothes at street fairs and their food at farmer’s markets. They walked through the city or used odd-looking bicycles with cobbled-together parts. Everyone had a mobile phone, but they used prepaid phone numbers that were difficult to trace. They spent hours on the Internet, but never joined a service provider. Roland made improvised antennas out of empty coffee cans that allowed access to different WiFi networks. This was called “fishing,” and the Free Runners circulated lists of coffee shops, office buildings, and hotel lobbies where the bandwidth was easily accessible.

By nine o’clock at night, everyone who planned to get drunk had achieved their goal. Malloy, the part-time bartender who had been in the race, was making a speech about the government’s plan to fingerprint children under the age of sixteen who were applying for a passport. The fingerprints and other biometric information were going to be stored in a secret database.

“The Home Office says fingerprinting some eleven-year-old girl is going to defeat terrorism,” Malloy announced. “Can’t people see that it’s all about control?”

“You better control your drinking,” Jugger said.

“We’re already prisoners!” Malloy shouted. “And now they’re gonna throw away the key. So where’s the Traveler? That’s what I want to know. People keep tellin’ me ‘Hope for the Traveler,’ but I haven’t seen sign of him.”

Gabriel felt as if everyone at the party had suddenly learned his true identity. He glanced around the crowded front room, expecting Roland or Sebastian to point him out. That’s the Traveler. Right over there. Worthless bastard. You’re looking at him.

Most of the Free Runners had no idea what Malloy was talking about, but a few people seemed eager to hush up the drunken man. Two members of Malloy’s crew began coaxing him out the back door. No one paid much attention and the party returned to normal. More beer. Pass the crisps. Gabriel stopped Jugger in the ground-floor hallway. “What was he talking about?”

“It’s kind of a secret, mate.”

“Come on, Jugger. You can trust me.”

Jugger hesitated for a moment, and then nodded slowly. “Yeah. I guess that’s true.” He led Gabriel into the empty kitchen and began stuffing trash into a shopping bag. “Remember when we first met at the pub and I told you about the Vast Machine? Some Free Runners say that a group called the Tabula is behind all this monitoring and control. They’re trying to turn Britain into a prison without walls.”

“But Malloy was talking about somebody called a Traveler.”

Jugger tossed the trash bag into a corner and opened a can of lager. “Well, that’s when the story gets a little crazy. There are rumors that people called Travelers might save us from becoming prisoners. That’s why people write ‘Hope for a Traveler’ on walls around London. I’ve done it myself a few times.”

Gabriel tried to keep his voice relaxed and casual. “And how is the Traveler going to change things, Jugger?”

“Hell if I know. Sometimes I think all this talk about Travelers is just a fairy tale. What’s real is that I walk around London and I see they’ve put up more surveillance cameras and I start to get desperate. In a thousand little ways freedom is melting away, and nobody gives a damn.”

THE PARTY HAD ENDED around one o’clock in the morning and Gabriel had helped mop the floors and pick up the trash. Now it was Monday, and he was waiting for Roland to return from Tyburn Convent. About an hour after his new haircut, Gabriel heard boots clomping up the staircase. There was a light tap on the door, and Roland entered the garret. The Free Runner from Yorkshire always looked solemn and a little bit sad. Sebastian once said that Roland was a shepherd who had lost all his sheep.

“Did what you wanted, Halo. Went to that convent.” Roland shook his head slowly. “Never went to a convent before. Me family was Presbyterian.”

“So what happened, Roland?”

“Those two nuns you told me about-Sister Ann and Sister Bridget-are both gone. There’s a new one there. Sister Teresa. She said she was the ‘public nun’ this week. Kind of a daft thing to say…”

“A public nun means they’re allowed to talk to strangers.”

“Right. Well, she did speak to me. Nice girl. I had half a mind to ask her if she wanted to go to a pub and have a pint. Guess nuns don’t do that.”

“Probably not.”

Standing near the doorway, Roland watched Gabriel pull on his leather jacket. “You okay, Halo? Want me to go back to Tyburn with you?”

“This is something I need to do alone. Don’t worry. I’ll be back. What’s for dinner?”

“Leeks,” Roland said slowly. “Sausage. Mash. Leeks.”

ALL THE BICYCLES at Vine House had nicknames and were stored in the garden shed. Gabriel borrowed a bicycle called the Blue Monster and headed north to the river. The Blue Monster had motorcycle handlebars, the rearview mirror from a delivery truck, and a rusty frame splattered with bright blue paint. Its back wheel made a constant squeaking sound as he pedaled over Westminster Bridge and made his way through the traffic to Tyburn Convent. A young nun with brown eyes and dark skin opened the door.

“I’m here to see the shrine,” Gabriel told her.

“That’s not possible,” the nun said. “We’re just about to close.”

“Unfortunately, I’m flying home tomorrow morning to America. Do you think I could have a quick look around? I’ve wanted to come here for years.”