We're facing each other like a pair of duellers. My ribcage is rising and falling quickly.

Of course I want to know.

He knows I want to know.

'Go on then,' I say at last, and give a grudging shrug. 'You can tell me if you like.'

In silence, Jack leads me over to a quiet spot, away from all the crowds. As we walk, my bravado ebbs away. In fact, I'm a bit apprehensive. Scared, even.

Do I really want to know his secret, after all?

What if it's fraud, like Lissy said? What if he's doing something dodgy and he wants me to join in?

What if he's had some really embarrassing operation and I start laughing by mistake?

What if it is another woman and he's come to tell me he's getting married or something?

I feel a tiny pang of pain, which I quell. Well, if it is … I'll just act cool, like I knew all along. In fact I'll pretend I've got another lover, too. Yes. I'll give him a wry smile, and say, 'You know, Jack, I never assumed we were exclusive—'

'OK.' Jack turns to face me, and I instantaneously decide that if he's committed a murder I will turn him in, promise or no promise.

'Here it is.' He takes a deep breath. 'I was in Scotland to visit someone.'

My heart plummets.

'A woman,' I say before I can stop myself.

'No, not a woman!' His expression changes, and he stares at me. 'Is that what you thought? That I was two-timing you?'

'I … didn't know what to think.'

'Emma, I do not have another woman. I was visiting …' He hesitates. 'You could call it … family.'

My brain gives a huge swivel.

Family?

Oh my God, Jemima was right, I've got involved with a mobster.

OK. Don't panic. I can escape. I can go in the witness protection scheme. My new name can be Megan.

No, Chloe. Chloe de Souza.

'To be more precise … a child.'

A child? My brain lurches again. He has a child?

'Her name is Alice.' He gives a tiny smile. 'She's four years old.'

He has a wife and a whole family I don't know about, and that's his secret. I knew it, I knew it.

'You …' I lick my dry lips. 'You have a child?'

'No, I don't have a child.' Jack stares at the ground for a few seconds, then looks up. 'Pete had a child. He had a daughter. Alice is Pete Laidler's child.'

'But … but …' I stare at him in confusion. 'But … I never knew Pete Laidler had a child.'

'Nobody knows.' He gives me a long look. 'That's the whole idea.'

This is so completely and utterly not what I was expecting.

A child. Pete Laidler's secret child.

'But … but how can nobody know about her?' I say stupidly. We've moved even further away from the crowds and are sitting on a bench under a tree. 'I mean surely they'd see her.'

'Pete was a great guy.' Jack sighs. 'But commitment was never his strong suit. By the time Marie — that's Alice's mom — found out she was pregnant, they weren't even together any more. Marie's one of those proud, defensive types. She was determined to do everything on her own. Pete supported her financially — but he wasn't interested in the child. He didn't even tell anybody he'd become a father.'

'Even you?' I stare at him. 'You didn't know he had a child?'

'Not until after he died.' His face closes up slightly. 'I loved Pete. But that, I find very hard to forgive. So a few months after he died, Marie turns up with this baby.' Jack exhales sharply. 'Well. You can imagine how we all felt. Shocked is an understatement. But Marie was positive she didn't want anyone to know. She wanted to bring Alice up just like a normal kid, not as Pete Laidler's love child. Not as the heiress to some huge fortune.'

My mind is boggling. A four-year-old getting Pete Laidler's share of the Panther Corporation. Bloody hell.

'So she gets everything?' I say hesitantly.

'Not everything, no. But a lot. Pete's family have been more than generous. And that's why Marie's keeping her away from the public eye.' He spreads his hands. 'I know we can't shield her for ever. It'll come out sooner or later. But when they find out about her, the press will go nuts. She'll shoot to the top of the rich lists … the other kids will give her a hard time … she won't be normal any more. Some kids could cope. But Alice … she's not one of them. She has asthma, she's kind of frail.'

As he's speaking, my mind is filled with memories of the papers after Pete Laidler died. Every single one had a picture of him on the front page.

'I'm overprotective of this child.' Jack gives a rueful smile. 'I know it. Even Marie tells me I am. But … she's precious to me.' He stares ahead for a moment. 'She's all we've got left of Pete.'

I gaze at him, suddenly feeling moved.

'So, is that what the phone calls were about?' I say tentatively. 'Is that why you had to leave the other night?'

Jack sighs. 'They were both in a road accident a few days ago. It wasn't serious. But … we're extra-sensitive, after Pete. We just wanted to make sure they got the right treatment.'