34.

Explain something to me," says Grievous, beating out a rhythm on the steering wheel. "Why do people always talk about how fast a car can get from naught to sixty? I mean, what's the big deal about sixty miles an hour? It's like people think aliens are going to land and only be able to do fifty-nine. They'll suck out our brains unless we can do naught to sixty in less than ten seconds."

He pauses, expecting a response.

"I've never thought of it that way," I say.

"Revheads don't have brains," he adds. "The aliens wouldn't be interested."

The holiday traffic has slowed to a crawl, edging between lights and roundabouts.

"Did you always want to be a detective?" I ask.

"Oh, no, sir, I came to it late," he says, pleased with the question. He pulls a creased photograph from his inner pocket.

"That's me there," he says. "Second from the left."

Still warm from his body, the image shows a group of teenagers in combat gear, resting on their haunches, weapons propped between their knees.

"You were an army cadet?"

"Yes, sir."

"Why didn't you join the army?"

"Failed the medical." He points to the scar above his left ear. "I had a tumor. Benign. But it was pressing on part of my inner ear. I was deaf in that ear until I was twenty-one. People thought I was slow. Stupid, you know."

"That's why you turn your head to one side."

"Pardon?"

"I noticed it when I first met you. You c.o.c.k your head a little when you're listening to people."

"Force of habit." He laughs, putting the photograph away. "When I couldn't join the army, I worked as a nurse and then became a court security officer. That's where I saw police officers giving evidence at criminal trials and I thought, Yeah, I could do that. I guess I wanted a challenge... to make a difference. Does that sound like a cliche?"

I shake my head.

Phillip Martinez's car is parked out front of the house, but n.o.body is answering the doorbell. The curtains are drawn. Lights off. I'm about to give up when I hear a tooting sound coming from the garage. I knock on the large double doors. A latch lifts and the right door opens a few inches.

Mr. Martinez takes a moment to recognize me.

He apologizes. "Were you knocking? I'm very sorry. I get so caught up." A bell jangles behind him. He opens the door wider. "My hobby," he explains. "It's rather embarra.s.sing... a grown man playing with trains."

A model railway fills the entire floor s.p.a.ce of the garage, twisting back and forth on different levels. There are mountains, rivers, roads, underpa.s.ses, tunnels, stations, h.o.a.rdings, signposts, rolling stock, engines and carriages. The attention to detail is astonishing, right down to the tiny figures of people and animals; animate yet immobile, inhabiting a recreated world.

He has fashioned entire towns with factories, warehouses, railway yards, shops, post offices, restaurants and cinemas. Pedestrians are caught in mid-stride on crossings. Cars wait for the lights to change. Town hall clocks are poised, ready to strike the hour.

Along one wall I see his workbench. It is lined with off-cuts and panels of balsa wood, along with electric fittings, wires and racks of steel train tracks. Tiny pots of paint are arranged according to colors. A magnifying gla.s.s on a retractable arm bends above the bench, with a bright light behind it.

The detective constable has followed me inside and is studying the workmanship.

Even the cast-offs in the dustbin look perfect, yet some small defect or flaw must have consigned them to the sc.r.a.pheap.

Mr. Martinez adjusts a figure that has fallen over on a platform-a stationmaster wearing a uniform and holding a flag.

"Only three tracks are running today," he explains. "There are normally five. Would you like a tour?"

"Please."

He takes me to the control panel and flicks several switches, setting more engines in motion. Boom gates open and close. Trains pause at level crossings. Whistles sound. Bells peal. The movement and sound seem to bring the models to life and I can almost imagine the little manikins moving.

"How long has this taken you?"

"A couple of years."

"Is it finished?"

"I keep changing my mind and rebuilding things."

"A work in progress?"

"A Sisyphean task."

Grievous has picked up a dining carriage. "Hey, there are little people in here. You can see the food on their plates."

"Please don't touch," says Mr. Martinez. "Some of the pieces are very delicate."

The detective constable sets down the carriage, wiping a smudge of oil from his fingertips.

On the wall of the garage I notice a photograph of Emily. The image has been folded in the frame, concealing the other person in the shot.

"I was hoping to speak to Emily."

"She's at work today. She has a part-time job in Abingdon."

"Can I ask you a question? Why did Emily want to run away?"

Mr. Martinez doesn't react. He flicks more switches. Another train is set in motion. "It was during the divorce. They were difficult days."

"Emily's mother lives in London."

"Yes."

"You don't share custody?"

Mr. Martinez pauses, squeezing his temple between this thumb and forefinger. "My wife attempted suicide a few years ago. It had been on the cards. Amanda had problems with alcohol and drug dependency, painkillers in the main. She stopped acting like a responsible adult, which is why I sued for custody."

"She fought the case?"

"Yes, but common sense prevailed."

"When did she attempt suicide, before or afterwards?"

His smile is long forgotten. "I don't feel comfortable with a question like that."

"I'm sorry. It came out the wrong way."

"I doubt that, Professor. You don't strike me as someone who speaks without thinking."

"You have a slight American accent," I say, changing the subject.

"I worked there for seven years. Amanda never really settled and her drinking got worse. I came home one day and she and Emily had packed up and come back to England."

"You followed them."

"Not immediately. My work was too important."

"That must have been hard, being away from Emily."

"I tried to get back and see her when I could. Amanda wouldn't let Emily fly on her own to the States. In the end I sacrificed everything to come back-my research project, my funding."

The trains are still circling, their lights flashing and whistles sounding.

"I did that for Emily because I could see what was happening. Amanda's drinking had got worse. She went to AA for a while, but kept falling off the wagon. She had always been flighty and highly strung, but she'd become positively destructive. Popping pills. Blacking out. Twice Emily couldn't wake her up and had to call an ambulance. That's why I fought for Emily and I didn't give up until I'd won her back."

"You make her sound like a prize."

He gives me the flattest of looks. "All children are gifts."

"Your daughter wanted to run away."

"We took a while to get to know each other. There were b.u.mps along the way."

"b.u.mps?"

"Amanda suffered a relapse and was committed to a psych ward. Emily blamed me."

"Why?"

"I don't know. You should ask her. Amanda going to hospital was probably why Emily stayed. She visited her mum every day and in the meantime we got to know each other. Things became easier... she understood the rules."

"Rules?"

"The normal stuff-no drinking, no smoking, no drugs, no junk food, no staying out late... Her weight was all over the place and her school grades were terrible. All that changed when I took charge."

"She was going through p.u.b.erty."

"Exactly. Teenagers shouldn't be treated like adults. They don't have the emotional and intellectual skills. That's half the problem in this country-lack of supervision, children being allowed to roam the streets. Look at the London riots. Young kids were breaking windows, trashing cars and stealing flat-screen TVs just because they were bored and they had no role models at home."

"What's the other half of the problem?"

"Pardon?"

"You said children were half the problem in this country."

He stops and apologizes. "You've got me on my hobby horse."

"Trains are probably a nicer hobby," I say, wanting to be outside, breathing different air.

He gazes at me with a formless smile. "I sense that you disapprove of my methods, Professor, but my daughter loves me. I'm just glad she didn't go with those girls. She might have been kidnapped too. Do you have children?"

"Two girls."

"It's difficult... raising kids. The world gets more complicated every day. They're getting information from magazines, TV shows, the Internet, social networking sites and instant messaging. We have to worry about net p.o.r.n, cyber bullying and online grooming. They all want to be famous. They think they're ent.i.tled. It's scary out there."

Out where, I want to ask him, but I'm tired of listening to his complaints and his paranoia. My left arm is trembling. There are too many fragile things around me; if I stumble I could crush entire buildings, ruin streets, derail trains...

"Do you mind if I talk to Emily?" I ask, moving towards the door. He gives me the name of the pharmacy where she works.

"Tell her I'm cooking linguini tonight. It's her favorite."

35.

The sun seems to be resting on the rooftops, angling through the windscreen. Grievous drives cautiously in the glare, bullied by cab drivers and dark-colored BMWs and Audis.

Ruiz answers his mobile on the first ring. He's out of doors, wheezing like an ex-smoker.

"Do you know how many abandoned industrial sites border railway lines in Oxfordshire?"

"Is that a trick question?"

"I've visited nine so far and every one should be bulldozed."

"I thought Capable was going to get aerial photographs and maps."

"You can't see s.h.i.t from an aerial map. A ten-story building can look like a tennis court."