It is easy to track Nigel down. David is a member of his Old Boys’ Association, and within minutes he has a mobile phone number.

We are all allowed to listen to the subsequent conversation, so confident is David of a warm and possibly even tearful welcome.

‘Hello, is that Nigel?’

‘—‘

‘This is David Grant.’ He gives a small smile of anticipation.

‘—‘

‘David Grant. From school.’

‘—‘

‘Yes. That’s right. Ha ha. How are you?’

‘—‘

‘Good, good.’

‘—‘

‘Fine, thank you. What are you up to these days?’

‘—‘

‘Right, right. Excellent.’

‘—‘

‘Gosh.’

‘—‘

‘Wow.’

‘—‘

‘Really? Well done. Listen—’

‘—‘

‘That’s a lot of megabytes.’

‘—‘

‘That’s a lot of turnover.’

‘—‘

‘That’s a lot of airmiles. Listen—’

‘—‘

‘Really? Congratulations.’

‘—‘

‘No, fifteen years is nothing nowadays. Look at Michael Douglas and…’

‘—‘

‘Is she?’

‘—‘

‘Does she?’

‘—‘

‘That’s a lot of magazine covers.’

‘—‘

‘Did she? Well, I’m sure Rod must be heartbroken. He probably doesn’t want to talk about it, ha ha… Anyway, I just wanted to catch up. And now I have. Bye, Nigel!’

And he hangs up. I look at him, and for a moment I see a flash of the man I used to know: angry, contemptuous, eaten up with envy and discontent.

‘You didn’t invite him to dinner.’

‘No. I’m not sure it’s much of a thing for him any more, the bullying.’

‘Really?’

‘Yeah. And I didn’t know whether he’d get on with Barmy Brian.’

‘Right.’

‘And he’s a pig. I’d have ended up thumping him again if he came round here.’

‘Like I thumped Christopher?’ says Tom cheerfully.

‘Exactly,’ David says.

‘There are some people you just have to hit, aren’t there?’ says Tom. ‘You just can’t help it.’

David doesn’t say anything, but the absence of an anguished correction is, I can’t help feeling, significant. It seems a shame that some sort of epiphanic moment should come during a conversation between my husband and my son about perpetrating violence, but I’ll take epiphanic moments where I can find them.

‘Who are you going to try next?’ I ask David as we are getting ready for bed.

‘I dunno,’ he says morosely. ‘Because that didn’t work, did it?’

‘I’m not entirely sure what it was intended to achieve. But probably it didn’t, no.’

David sits down heavily on the not-quite dirty clothes that cover our bedroom chair. There are so many clothes that he ends up all lop-sided, slanting towards the window like a house-plant starved of light.

‘I know you think it’s all stupid.’

‘What? Phoning people up who don’t remember you to apologize for something they’ve forgotten you ever did?’

‘Not just Nigel Richards. All of it.’

I don’t say anything. I just sigh, which is as good a way of answering the question as any.

‘Well, so do I,’ he says. ‘I think it’s incredibly stupid. Pointless. Pathetic.’

‘You’re just feeling discouraged. You’ve had a knockback. Apologize to someone else. That poor bastard whose life you used to make a misery on the local paper. That friend of your mum’s you refused to invite to our wedding.’

‘I’m not talking about apologies. I’m talking about everything. Feeding the poor. Telling everyone to give their money away. Writing that book. It’s all mad, I know that. I’ve known it for a while. I just haven’t let on.’

When GoodNews and David got on the phone earlier in the evening, it seemed like just another sweet, misguided and totally pointless scheme, and now it is clear that it was in fact a pivotal moment in familial history. It’s like the Berlin Wall coming down: you couldn’t see it happening, but then it seems clear that all the internal contradictions made the fall inevitable. It was always going to happen, just as David was eventually going to see that it was all mad. It feels strange, thinking that we are on the verge of returning to our old life. Sarcasm, bitterness, bad novels, a spare bedroom and one less mouth to feed… I have mixed feelings about it, if I am honest. For a while, things were interesting, special even.

‘GoodNews told me about your flat battery,’ says David. ‘Well, I’ve got one, too. There’s nothing there. That first flush I felt… It’s all disappeared, and now I just feel nothing. That’s why I can see how stupid it all looks. Like you can. And everybody else who’s depressed and can’t understand what they’re supposed to be doing with their lives.’

I don’t say anything. Tomorrow maybe I’ll try to find a phone number for the organization that provides counselling for people who have been brainwashed by cults; I’m sure that depression of this kind is an entirely normal consequence of having your whole reason for living taken away from you.

‘That’s why I’m not going to give up,’ David continues. ‘I can’t afford to. What am I going to do? Go back to writing nasty columns for the local newspaper about old people on buses? Ha! I don’t think so. No, it’s like a… well, it’s like a marriage. You’ve got to work at it and hope the feeling comes back. And even if it doesn’t, I know I’m doing something. Not just sitting around moaning and being mean.’

‘So you’re going to go round knocking on people’s doors and telling them to give away all their savings even though you don’t believe in it?’

‘It’s not exactly that I don’t believe in it. More like, I dunno, I don’t not believe in it.’

‘And is that enough?’

‘I don’t know. I don’t suppose so.’ He looks at me. ‘You tell me.’

‘What do I know about it?’

‘Aren’t we both doing the same thing?’

‘Are we?’

‘How passionately do you believe in our marriage?’

‘How passionately do you believe in our marriage?’

It’s a fair question, I suppose, the one I have just angled back to David like a tennis player at the net, using the pace and the spin that he put on the ball to my advantage. Any marriage counsellor would support my right to ask it, but I know it’s a cheat. That’s the thing with failing relationships. You can always refuse to answer any question by repeating it. ‘Do you love me?’ ‘Do you want a divorce?’ ‘Are you happy?’ Your partner is invariably as ambivalent as you are, and if he or she is human—that is to say, cowardly but at the same time somehow full of moral self-righteousness—then he or she will not commit themselves through any expression of passion or commitment. After all, the absence of passion or commitment is the reason why the relationship is failing, surely? So in my experience it is both easy and advisable to reduce any serious discussion to a farcical stalemate almost immediately. Years can go by before you have to make a decision.

What is atypically pathetic in this case is that David isn’t even really asking me to talk properly about us. He’s using the marriage rhetorically, as an analogy, and yet still I won’t be drawn. How feeble can you get?

‘OK, OK,’ I say, all of a rush. ‘I don’t feel passionately about the marriage at all. I’m just too frightened to pack it in. Too much depends on it. I don’t want to be the bad guy.’

‘Exactly,’ says David soberly. ‘Well that’s just…’

‘Hold on, hold on. Exactly? That’s all? You don’t mind me saying that? You knew all the time?’

‘Katie, in the last couple of months you’ve had an affair and you moved out of our house. You’re not exactly a blushing bride, are you? The point is, what are we going to do when we’re both so, so… soul-dead? Me, I feel like I’ve come too far down one road to go back. And maybe you feel like that about our marriage. And that means that whatever we do is going to be really, really hard, much harder than it would be for anyone else who knew what they wanted and why. We’ve both got flat batteries, but we’ve still got to drive the car somehow. And I haven’t got a clue how to do that. Have you?’