‘How dare you?’ she snapped. ‘Let me go at once.’

He gave no sign of obeying her demand.

‘Only just met,’ he scoffed. ‘You know better than that.’

She did, and it was like a blow to the heart. They had known each other only a few minutes, yet their shared knowledge gave them a painful intimacy, isolating them together, facing the whole world on the far side of a glass barrier.

‘When you saw me across the water,’ he grated, ‘you knew who I was, didn’t you?’

‘Yes.’

‘How?’

‘I researched your wife on the internet, and you were part of what I found. Somehow I just had to find out about the woman James left me for.’

‘Yes, you had to find out. I felt the same, but for me there was no way to do it. I knew nothing about the man she went away with, except his name, and that led nowhere. You’ve been able to answer some of your questions, but can you begin to imagine what it’s like for me, never to be able to find a single answer?

‘In there-’he stabbed his own forehead ‘-there’s a black hole that I’ve lived with for a year. It’s been like standing at the entrance to the pit of hell, but I can’t see what’s there.’

‘Do you think I don’t know what that’s like?’

‘No, you don’t know what it’s like,’ he raged. ‘Because the torment springs from ignorance, and you’ve managed to deal with your ignorance. But I’ve lived with mine for a year and it’s driving me crazy.’ He shuddered then seemed to control himself by force. ‘You’re the one person who can free me from that horror, and if you imagine that I’m going to let you go without-without-’

It was harsh, almost bullying, but beneath the surface she could feel the desperate anguish that possessed him, and her anger died. So he was ill-mannered-so what? When a man saw his last hope fading, he would do anything to prevent it.

Slowly his hold on her arm was released. ‘Please,’ he said. ‘Please! You and I must talk. You know that, don’t you? You know that we must?’