His heart responded to the exercise by spinning up. He was tingling by the time he reached the bottom, seven floors later.

He parked himself in the restaurant by a window seat and watched the waves lap dangerously close to the top of the flood defences. By the time Newcomen arrived, looking damp and grim, he was on his second cup of coffee and pleasantly wired.

“Sit,” he said, and pushed the opposite chair away from the table with a foot. He continued to stare out of the window while a waitress brought Newcomen his own coffee.

Both men ignored the self-service buffet for the moment.

“You’ve ruined my life,” said Newcomen.

“Yeah: as I’ve already explained, your life was ruined long before we first met, but not by me. Surprisingly enough, I want you to live. I want you to help me find Lucy. Your bosses want exactly the opposite. They don’t want me to find Lucy, and they don’t care if you live or die. Whatever’s happened up there on the North Slope is much more important than your frankly insignificant existence.” Petrovitch nodded outside. “You’ve been sold down a river which looks a lot like that one. Big, cold, and supremely indifferent.”

“If I promise to do everything you ask, will you deactivate the bomb?”

“No, you’ll have to dig it out yourself. Though I will free you of your obligations when we’re done.”

Newcomen raised his eyebrows along with his hopes. “No matter what the outcome is?” He didn’t say, if Lucy turns up dead, and Petrovitch was grateful.

“No matter what. I’m not spiteful. I have as many revenge fantasies as the next guy, but mostly I’m a peaceable man who just want to be left alone.”

“Are you going to ask me to do anything illegal?”

“Probably. At some point, there’ll come a time when it becomes obvious – even to you – that our search is being blocked. You’ll do what I think necessary, however distasteful it might be.” Petrovitch shrugged. “Better a black mark against your name than a black line through it.”

Newcomen clattered a teaspoon against the side of his cup. “Am I allowed—”

“No.”

“You don’t even know what I’m going to say!.”

“Yeah, I do. You can’t tell anyone, not even your fiancée.”

“I haven’t even mentioned her yet.”

Images flashed into Petrovitch’s vision of a slender but vital blonde-haired, green-eyed young women with a ready smile and a quick temper.

“You’ve got no secrets left, Newcomen. Not from me. Christine Logan, only child of Edward Logan, CEO of Logan Realties. Twenty-four, and pretty in a spliced, cheerleadery sort of way. Wedding date is set for this September twenty-second, at St Mark’s Episcopal Cathedral.” He regarded the man across the table. “To be honest, I’m surprised you even met, let alone were allowed to date her.”

Newcomen puffed up. “What do you mean by that?”

“She’s virtually Reconstruction royalty, and you’re a low-ranking FBI agent.” A thought occurred to Petrovitch, but he kept it to himself. “Good luck with that: you’re going to need it.”

“She loves me.”

“I’m not questioning that. It’s whether she’ll still love you after this.”

“Of course she will. That’s a terrible thing to say. Though,” Newcomen grimaced, “if I get fired, how am I supposed to support her?”

“Maybe Teddy’ll give you a job. Maybe he won’t. Look,” said Petrovitch, “I’m not unsympathetic. I didn’t have to worry about the in-laws, unless you count Maddy’s mother joining the Outies and trying to kill her. I did have to worry about Sonja, but that was later.” He drifted off in a reverie of his own, then snapped back. “If it’ll mean a little more co-operation on your part and a little less coercion on mine, I’ll hold off the black-ops stuff until absolutely necessary. Fair?”

“Fair?”

“Well, not fair. But it’s the only concession you’re going to get out of me, so take it or leave it. Now,” Petrovitch twisted in his seat, “breakfast is calling me. What I’m going to do is fill up on fried food, and maybe a big stack of pancakes, then I’m taking us to the airport.”

“You’re not even a resident here. I hope you’ve paid the supplement.” Newcomen flapped his napkin open and rested it on his place setting.

“I did try. They wouldn’t let me.”

“They wouldn’t let you?”

“No. Look around the place. Tell me what you see.” Petrovitch stood up and surveyed the scene.

“I…” Newcomen knew he was being tested, but couldn’t work out the question. “There aren’t that many guests. A hotel like this in America would be busy.”

“Anything else?”

“There’s not such a wide choice of food?”

“Yeah. Your eyes are sliding right past the waiters and waitresses, the cooks and the receptionists. Ten years since I last saved this city, and I still can’t pay for a meal.” Petrovitch headed for the food counter, weaving through the other diners.

He was already loading his plate with bacon when Newcomen came up beside him. “So what you’re saying is, no one questioned you when you walked in here last night with me slung over one shoulder. And no one ever would.”

“They even found me a wheelchair to put you in. There’s no record of me ever being here. If you asked them direct, to a man and woman they’d deny they saw me, spoke to me, gave me any help at all. I’m like a ghost in the machine. You know, I love hotel breakfast mushrooms. They get to cook in their own juices in a way you can’t manage on your own with just a frying pan.” He helped himself to a large spoonful, and then a few more. “That’s the way it is, Newcomen. The Metrozone is still home.”

“How very tribal of you.” Newcomen’s plate carried a couple of pieces of brown toast, nothing more.

“Your room was bugged, by the way. I took care of it.”

“Bugged.”

“NSA surveillance. Pretty basic.”

“The NSA?” Newcomen was reduced to merely repeating the key points.

“I expected them to try. They expected me to take them out. It’s an opening gambit, just a warm-up before the main event.”

“Main event?”

“Yeah, they’re going to want to keep close tabs on us once we get to the States. Who we talk to, what we say, where we go, what we see. They’ll use all the tricks in the book, and then a few more on top.” Petrovitch shrugged again, nearly dislodging the triangles of fried bread he had balanced on his thumb. “It’ll be fine. I’ll feed them enough that they’ll think it’s working, while we get on with the important stuff.”

“We’re being surveilled by the NSA? I’m a Federal agent: they can’t do that.”

“They can if either they’ve cleared it with the Director, they’ve an executive order, or they just don’t care. I do notice that you don’t dismiss the idea out of hand and call me a liar, though. We might actually be able to work together.” Petrovitch looked down at his plate and decided he couldn’t physically fit anything else on it without inviting disaster. He headed back to his place, where with no ceremony at all, he proceeded to demolish his food, a layer at a time.

Newcomen scraped some butter across the dry surface of his toast and nibbled at it, while looking with increasing disgust at his tablemate.

“What?” said Petrovitch, struggling to keep one of his beloved mushrooms in his mouth.

“Your manners. They’re disgusting.”

“Yeah, well, I’ve got a lot of hardware to power. As fun as it is for the fuel cells to start consuming my body fat, I’d rather they digested this stuff first.” He forced the errant fungus back in with a piece of crispy potato square. “Beats being plugged into the mains every night.”

Newcomen put his toast down and stared longingly at it for moment, before pushing it away.

“Your loss.” Petrovitch snagged the uneaten slice and chewed off one corner. “I appreciate you can’t see anything beyond this, that it feels like your world’s ended and everything you’ve spent the last few years working for is in ruins. That’s not necessarily the case. Assuming you don’t do something congenitally stupid, there will be an afterwards. I can’t tell you what it might look like, because a lot of that’s up to you. One thing I don’t want happening is you fainting on me every five minutes because you’re too depressed to eat. So get that yebani toast down you and show some backbone.”