The door to the boardroom (painted a kind of cyanotic blue) was ajar and when Theo gave it a little nudge it swung open helpfully, giving him a view of the whole room. Theo had never made it this far before and had no idea how the room might have evolved over the past decade, but he was surprised when he found it empty of furniture and fittings, the floorboards dusty and scratched, the paintwork chipped. It had always been the beating heart of the office but now it was being used as a storeroom, stacked with boxes of oils and creams, a massage table folded and propped against one wall, a laundry basket overflowing with used white towels. The marble fireplace was still there. There were even ashes lying cold in the grate.

The spot itself, the place where his daughter had been slaughtered, was beneath some kind of trolley. The trolley looked like something that belonged on a hospital ward, but in the place of medicines, it was laden with dozens of bottles of nail varnish in different colors. In St. Petersburg, once, Theo had visited the Church of Our Savior on the Spilled Blood, built over the place where Alexander II was assassinated. It was a fantastic edifice of mosaic and gold, of spires and enameled onion domes, yet he had found the interior a soulless space, echoing with the cold. Now he realized that the atmosphere didn't really matter, what mattered was that it existed, and its existence meant that no one could ever forget what had happened there. The place where Laura fell was marked by a trolley of nail varnish. What kind of a shrine was that? Surely a spring should have bubbled up, or a tree blossomed, on the sacred spot where his daughter's blood was spilled?

Exsanguinated. A strange, dramatic word that seemed to belong in a revenge tragedy, but no revenge had ever been possible for Theo. KNIFE-WIELDING MANIAC MURDERS LOCAL GIRL! the local headlines said. The nationals too. For a few days it had been news and then everyone seemed to forget. Not the police, of course.

They had really cared, Theo had never doubted that for a minute. He still saw Alison, his family liaison officer, occasionally, even now, and the police had followed up every possible lead, there had been no client confidentiality left at Holroyd, Wyre, and Stanton once the police had raked through every file and item of correspondence. The media talked about it being a random crime, the work of a psychopath, but the man – the knife-wielding maniac – had entered the office looking for Theo, for "Mr. Wyre." Theo had done something, precipitated something, he had made someone, someone in a yellow golfing sweater, so crazy that the man wanted to kill him. Had that bloodlust been assuaged, had the man in the yellow golfing sweater found some primitive satisfaction in slaying Theo's child? His own blood.

The trolley was on wheels and Theo had been about to move it when one of the concealed doors in the curve of the oval wall was opened suddenly by a trim woman dressed in the same white uniform as Milanda. She frowned at Theo, but before she could protest at his presence he said, "Sorry, wrong room!" and backed out the door, performing a ridiculous kind of salaam in an attempt to calm her fears.

"I'll get back to you," he said breezily to Milanda, waving the brochure still clutched in his hand. He made for the stairs as rapidly as his bulk would allow, although the best he could manage was a kind of rolling waddle. He imagined Milanda at his back, rugby tackling him on Parker's Piece. Theo's heart was knocking uncomfortably inside his chest and he took refuge in a cafe on Mill Road, where he ordered a modest latte and a scone but nonetheless was subject to the disapproval of the waitress, who made it clear that she thought someone so overweight shouldn't be eating at all.

Time did not heal – it merely rubbed at the wound, slowly and relentlessly. The world had moved on and forgotten and there was only Theo left to keep Laura's flame alive. Jennifer lived in Canada now and although they talked on the phone and e-mailed each other, they rarely talked about Laura. Jennifer had never liked the pain of remembering what had happened, but for Theo it was the pain that kept Laura alive in his memory. He was afraid that if it ever began to heal she would disappear.

Afterward, after it happened ten years ago, Theo didn't want to speak to anyone, didn't want to speak, didn't want to acknowledge the existence of a world that went on without Laura in it, but when he got home from the hospital, he forced himself to phone Jennifer. When she answered the phone and heard his voice she said, "What?" in that impatient way she had, as if he only phoned her to annoy her. And then she grew even more impatient because he couldn't speak at all and it was only after the most extraordinary act of will that he was able to say, "Jenny, a bad thing has happened, a very bad thing," and all she said was "Laura," in a flat voice.

Theo would have committed suicide, perhaps not that day, not until after the funeral, after he had put all his affairs in order, but he couldn't kill himself because then Jennifer would know (although she must always have known, surely?) that he loved Laura more than her. Because if it had been Jennifer who had died and not Laura, Theo knew he wouldn't have even thought about killing himself.

Even now, Theo hoped that one day the stranger who had come looking for him and who had found his child instead would return. Theo imagined opening his front door to the man in the yellow golfing sweater and opening his arms wide to embrace the knife, embracing the death that would reunite him with Laura. He had buried her, not cremated her. He needed a grave to go to (all the time) somewhere where she felt tangible, within arm's reach, just six feet away. There had been times when the grief had been so bad that he had thought about digging her up, exhuming her poor rotting body, just so he could cradle her one last time, reassure her that he was still here, still thinking about her, even if no one else was.

Theo paid for his coffee, leaving a tip that was bigger than the bill. The worse the service, the more Theo tended to tip. He supposed it was a character weakness. He thought of himself as a person made almost entirely out of weaknesses rather than strengths. He had to fight his way upstream against a tide of tourists, all enraptured by the colleges, the tangible fabric of history – scholarship and architecture and beauty. When Theo had first come to Cambridge as a student he thought it was the most beautiful place on Earth. He had been brought up in a prosaic suburb in Manchester, so Cambridge had seemed like the architecture of transcendence. When he first glimpsed inside the courts of the colleges it had been like seeing visions of paradise. He hadn't known anything so beautiful existed, yet now he hadn't even looked at a college for ten years. He walked past the gorgeous frontages of Queens' and Corpus Christi and Clare and King's and saw nothing but stone and mortar and, eventually, dust.

"Closure," that was what they called it. It sounded so Californian. He had avoided the word, avoided the act, but he knew he couldn't go to his grave not knowing who the man in the yellow golfing sweater was. He checked his watch. He didn't want to be late.

Theo read a copy of Reader's Digest while he waited. Waiting rooms seemed to be the only place you ever saw Reader's Digest these days. The woman on reception said Mr. Brodie was "tied up at the moment" but would be able to see him in ten minutes if he'd like to wait. "I'm his assistant, Deborah," she added, "but you can call me Mrs. Arnold." Theo couldn't tell whether or not she was trying to be funny. He remembered how at Holroyd, Wyre, and Stanton that used to be a standingjoke among the staff- he'd heard them on the phone saying to clients, "I'm sorry, Mr. Holroyd is all tied up in his office just now," in that singsong secretary voice they all used and then when they came off the line they al-ways burst into laughter. Mr. Brodie's secretary didn't look as if she were deriving any amusement from the idea of her boss in some bondage scenario beyond the closed door of his office. Instead she was taking her aggression out on her computer keyboard in a way that suggested that, like Cheryl, his own secretary, she had been trained on upright typewriters, built like tanks. He still saw Cheryl sometimes – she was retired now but Theo had visited her in her overheated bungalow and had (rather awkwardly) drunk tea and eaten her All-Bran tea loaf.