‘I know!’ she shouted, her chair scraping across the tiles as she jumped to her feet. ‘They might be dead! They might be evil criminals who shoot us for trespassing! They might be secret alien spies who planted the birth certificate so they can take over Mum’s cleaning company! If we aren’t going to go and find out, then what was the point in looking?’

‘We are going to find out,’ I replied, doing my best to pretend I wasn’t a jumbled mess of turmoil and trepidation too. ‘But like I said, we need to consider how we do it. Can you give Sam and me a chance to do that, please? Let’s make sure we do it the right way so that we have the best possible chance of it working out well.’

‘I told you it’s going to work out well, just like I told you we’d find them!’ Joan retorted, but her shoulders had stopped heaving quite so hard, and she finished the statement by sitting back down and tearing off a giant piece of pizza with her teeth.

She chewed her mouthful, eyes roving from side to side as she considered this. ‘Okay. I’ll do it your way. On one condition. I’m coming too. You know that they’re more likely to behave nicely and say yes to coming to meet Mum if their adorable long-lost granddaughter is there.’ Joan pulled a fake-sweet face, clasping her hands in front of her chest. ‘I will melt their hearts.’

I wasn’t about to argue. She’d melted mine. ‘Okay, you can come.’

‘Promise?’

‘I promise. If you promise to wait in the car while I check out the house and make sure it looks safe before we ring the doorbell.’

‘Well, Sam can do that, can’t he?’

‘Um, I don’t think Sam’s going to trek all the way to Chester with us.’

‘Are you kidding?’ Sam asked. ‘I wouldn’t miss this for the world.’

Joan wasn’t the only one capable of melting my heart.

We sent her off to choose a film to watch – I’d not got around to buying a television, but we’d moved hers over from New Cottage the previous weekend.

‘Fine!’ she said, waving her hand breezily as she left the room. ‘You have your secret, adult-only conversation about my grandparents while I pretend to spend ages choosing a film. Then you can come in and tell me the PG version of your plan.’

‘What do you really think?’ I asked Sam, popping the caps off two beers.

‘About what?’

‘All of it!’

‘I think it’s genuinely them, like I said. I think that there are lots of reasons why teenagers can become estranged from their parents, but not many of them still matter fifteen years later. Has Leanne given any indication that they might be people we need to protect Joan from?’