Against her will, Robin remembered the night that Matthew had proposed under the statue of Eros at Piccadilly Circus. There had been tramps sitting on the steps, jeering as Matthew sank to his knees. She had been caught completely off guard by that unexpected scene on the grimy steps, Matthew risking his best suit on the damp, dirty stone, alcoholic fumes wafting towards them over the smell of exhaust fumes: the little blue velvet box and then the winking sapphire, smaller and paler than Kate Middleton’s. Matthew later told her he’d chosen it because it matched her eyes. One of the tramps had got to his feet and applauded drunkenly when she said yes. She remembered the flashing neon lights of Piccadilly reflected on Matthew’s beaming face.

Nine years of shared life, of growing up together, of arguing and reconciling, of loving. Nine years, holding fast to each other through trauma that ought to have broken them apart.

She remembered the day after the proposal, the day she had been sent by the temping agency to Strike. It seemed much, much longer ago than it was. She felt like a different person… at least, she had felt like a different person, until Strike told her to stay at home and copy down phone numbers, evading the question of when she would return to work as his partner.

“They split up.”

“What?” said Robin.

“They did,” said Matthew, and his voice broke. He nodded at the screen. Prince William had just turned to look at his bride. “They broke up for a bit.”

“I know they did,” said Robin.

She tried to speak coldly, but Matthew’s expression was bereft.

Maybe on some level I think you deserve better than me.

“Is it—are we really over?” he asked.

Kate Middleton had drawn level with Prince William at the altar. They looked delighted to be reunited.

Staring at the screen, Robin knew that today her answer to Matthew’s question would be taken as definitive. Her engagement ring was still lying where she had left it, on top of old accountancy textbooks on the bookcase. Neither of them had touched it since she had taken it off.

“Dearly beloved…” began the Dean of Westminster on screen.

She thought of the day that Matthew had asked her out for the very first time and remembered walking home from school, her insides on fire with excitement and pride. She remembered Sarah Shadlock giggling, leaning against him in a pub in Bath, and Matthew frowning slightly and pulling away. She thought of Strike and Elin… what have they got to do with anything?

She remembered Matthew, white-faced and shaking, in the hospital where they had kept her for twenty-four hours after the rape. He had missed an exam to be with her, simply taken off without leaving word. His mother had been annoyed about that. He had had to resit in the summer.

I was twenty-one and I didn’t know then what I know now: that there’s nobody like you and that I could never love anyone else as much as I love you…