Yet something implacable inside him refused to give in. Two nights in a row would break the pattern; from there, it would be a short slide into true intimacy. In the depths of himself Strike could not imagine a future in which he lived with a woman, married or fathered children. He had planned some of those things with Charlotte, in the days when he had been readjusting to life minus half his leg. An IED on a dusty road in Afghanistan had blasted Strike out of his chosen life into an entirely new body and a new reality. Sometimes he saw his proposal to Charlotte as the most extreme manifestation of his temporary disorientation in the aftermath of his amputation. He had needed to relearn how to walk, and, almost as hard, to live a life outside the military. From a distance of two years, he saw himself trying to hold tight to some part of his past as everything else slipped away. The allegiance he had given the army, he had transferred to a future with Charlotte.

“Good move,” his old friend Dave Polworth had said without missing a beat, when Strike told him of the engagement. “Shame to waste all that combat training. Slightly increased risk of getting killed, though, mate.”

Had he ever really thought the wedding would happen? Had he truly imagined Charlotte settling for the life he could give her? After everything they had been through, had he believed that they could achieve redemption together, each of them damaged in their own untidy, personal and peculiar ways? It seemed to the Strike sitting in the sunshine with Lorelei that for a few months he had both believed it wholeheartedly and known that it was impossible, never planning more than a few weeks ahead, holding Charlotte at night as though she were the last human on earth, as though only Armageddon could separate them.

“Want another coffee?” murmured Lorelei.

“I’d better make a move,” said Strike.

“When will I see you?” she asked, as Strike paid the waiter.

“Told you, I’ve got this big new job on,” he said. “Timings are going to be a bit unpredictable for a while. I’ll call you tomorrow. We’ll go out as soon as I can get a clear evening.”

“All right,” she said, smiling, and added softly, “Kiss me.”

He did so. She pressed her full lips against his, irresistibly recalling certain highlights of the early morning. They broke apart. Strike grinned, bade her goodbye and left her sitting in the sun with her newspaper.

The Minister for Culture did not invite Strike inside when he opened the door of his house in Ebury Street. Chiswell seemed keen, in fact, for the detective to leave as quickly as possible. After taking the box of listening devices, he muttered, “Good, right, I’ll make sure she gets them,” and was on the point of closing the door when he suddenly called after Strike, “What’s her name?”

“Venetia Hall,” said Strike.

Chiswell shut the door, and Strike turned his tired footsteps back along the street of quiet golden townhouses, towards the Tube and Denmark Street.

His office seemed stark and gloomy after Lorelei’s flat. Strike threw open the windows to let in the noise of Denmark Street down below, where music lovers continued to visit the instrument stores and old record shops that Strike feared were doomed by the forthcoming redevelopment. The sound of engines and horns, of conversation and footsteps, of guitar riffs played by would-be purchasers and the distant bongos of another busker were pleasant to Strike as he settled to work, knowing that he had hours ahead in the computer chair if he were to wrest the bare bones of his targets’ lives from the internet.

If you knew where to search and had time and expertise, the outline of many existences could be unearthed in cyberspace: ghostly exoskeletons, sometimes partial, sometimes unnervingly complete, of the lives led by their flesh and blood counterparts. Strike had learned many tricks and secrets, become adept ferreting in even the darkest corners of the internet, but often the most innocent social media sites held untold wealth, a minor amount of cross-referencing all that was necessary to compile detailed private histories that their careless owners had never meant to share with the world.

Strike first consulted Google Maps to examine the place where Jimmy and Billy had grown up. Steda Cottage was evidently too small and insignificant to be named, but Chiswell House was clearly marked, a short way outside the village of Woolstone. Strike spent five minutes fruitlessly scanning the patches of woodland around Chiswell House, noticing a couple of tiny squares that might be estate cottages—they buried it down in the dell by my dad’s house—before resuming his investigation of the older, saner brother.

CORE had a website where Strike found, sandwiched between lengthy polemics about celebration capitalism and neo-liberalism, a useful schedule of protests at which Jimmy was planning to demonstrate or speak, which the detective printed out and added to his file. He then followed a link to the Real Socialist Party website, which was an even busier and more cluttered affair than that of CORE. Here he found another lengthy article by Jimmy, arguing for the dissolution of the “apartheid state” of Israel and the defeat of the “Zionist lobby” which had a stranglehold on the Western capitalist establishment. Strike noted that Jasper Chiswell was among the “Western Political Elite” listed at the bottom of this article as a “publicly declared Zionist.”

Jimmy’s girlfriend, Flick, appeared in a couple of photographs on the Real Socialist website, sporting black hair as she marched against Trident and blonde shaded to pink as she cheered Jimmy, who was speaking on an open-air stage at a Real Socialist Party rally. Following a link to Flick’s Twitter handle, he perused her timeline, which was a strange mixture of the cloying and the vituperative. “I hope you get fucking arse cancer, you Tory cunt” sat directly above a video clip of a kitten sneezing so hard that it fell out of its basket.

As far as Strike could tell, neither Jimmy nor Flick owned or ever had owned property, something that he had in common with both of them. He could find no indication online of how they were supporting themselves, unless writing for far-left websites paid better than he had imagined. Jimmy was renting the miserable flat in Charlemont Road from a man called Kasturi Kumar, and while Flick made casual mention on social media of living in Hackney, he could not find an address for her anywhere online.

Digging deeper into online records, Strike discovered a James Knight of the correct age who seemed to have cohabited for five years with a woman called Dawn Clancy, and upon delving into Dawn’s highly informative, emoji-strewn Facebook page, Strike discovered that they had been married. Dawn was a hairdresser who had run a successful business in London before returning to her native Manchester. Thirteen years older than Jimmy, she seemed to have neither children nor any present-day contact with her ex-husband. However, a comment she had made to a jilted girlfriend’s “all men are trash” post, caught Strike’s eye: “Yeah, he’s a shit, but at least he hasn’t sued you! I win (again)!”

Intrigued, Strike turned his attention to court records and, after a little digging, found several useful nuggets of information. Jimmy had been charged with affray twice, once on an anti-capitalism march, once at an anti-Trident protest, but this, Strike had expected. What was far more interesting was to find Jimmy on a list of vexatious litigants on the website of HM Courts and Tribunals Service. Due to a longstanding habit of beginning frivolous legal actions, Knight was now “forbidden from starting civil cases in courts without permission.”