Moonbeam drew breath, as if to jump back in with some other inane observation. I hurriedly continued before he could. ‘I saw your mum was wearing a necklace yesterday. It looked pretty.’

He wrinkled his nose. ‘What? Yeah, she has a lot of jewellery.’ He rushed into his next sentence. ‘So if Barry and the other producers want you to play the part of—’

‘Where did she get it from?’ I asked, unwilling to let him change the subject. ‘I’d love to get one to match.’

‘It’s one of a kind,’ he said, tugging uncomfortably at his sleeve. ‘Besides, it’s pretty ugly. Anyway, you should—’

Moonbeam was determined to talk about something else. I was equally determined to stay on topic. ‘What’s inside it?’

‘Huh?’

‘It looks like a liquid,’ I said patiently. ‘Mercury or something.’

He tugged at his sleeve again. ‘Yeah,’ he said unconvincingly, ‘that’s what it is. Mercury.’ He checked his watch. ‘Bugger. I’d better go. I promised the boom operators I’d help them out before the opening.’ He turned and skedaddled.

I frowned, watching his departure. Moonbeam definitely didn’t want to talk about his mother’s necklace. I was sure he was lying and knew more than he was letting on. The question was why.

I didn’t have the chance to go after him and find out more. Barry leapt into the void Moonbeam had left and dragged me away. ‘The other contestants are arriving,’ he informed me. ‘You need to join them. They’ve had a couple of weeks to get to know each other, remember, so you have a lot of catching up to do.’

I lifted an eyebrow. ‘Why do you do that? Why do you let them … us … meet each other before the show?’

He spoke without thinking. ‘People are on their best behaviour when they meet someone else for the first time. Generally it takes a few days for strangers to settle down in each other’s company. Add the unfamiliar cameras into the mix, and we’d have the talent tiptoeing around each other for a full week. That doesn’t make for good television. It’s far better to make sure that everyone already knows who they like and dislike beforehand. It cuts out a lot of the boring stuff.’ He glanced at me. ‘Of course, you’ll be at an advantage. You’re the unknown quantity.’

We joined the other contestants, re-dressed in their finery. Harriet shot me an evil look, even though I was certain that she was the one who’d screwed things up by pointing the finger in my direction for her wardrobe change.

‘Oh,’ I murmured to Barry, ‘I wouldn’t worry about that. I think I’ve already made an enemy.’

When Bellows appeared, wearing his ridiculous Halloween costume again, and sniffed imperiously upon spotting me, I knew it wasn’t just Harriet I’d have to worry about. The other contestants looked at me curiously. I briefly considered telling them not to worry. I wasn’t here to win in order to carve out a career in morning television; I wanted to find the zombie master. Somehow I didn’t think that would go far in the reassurement stakes.