Robin meets him in the corridor. ‘This could be what we need, couldn’t it?’ he says to Grey, who nods.

‘I’ll put a call in to the SOCO team, see if they can find them.’ Grey pauses. ‘And White’s not lying about the mobile reception. BT confirmed today that the main mast near the car park was down from midnight until three a.m. Unfortunate,’ he adds, before hurrying off.

‘You could say that,’ Robin mutters.

He goes back to watching the screen. Craig is continuing the interview and has put a photograph in front of White.

‘Can you tell me what this is?’ she asks.

White picks it up, looking closely at the image. ‘It’s Simon’s penknife,’ he replies.

‘And you know that for sure?’

‘Yes.’ His finger points to the photo. ‘There’s an engraving on it – see? SS. It was a gift from one of his old professors, or something.’

‘Why would Simon Sharp have a penknife with him?’

‘He always did. He carried it everywhere he went. Said it was good to be prepared. Even if it was just for the corkscrew.’ White laughs, then it’s overtaken by a sob. ‘Guess it didn’t save him this time.’

‘No,’ Craig replies simply.

‘Was that… was that what he was killed with?’

‘We believe it was the murder weapon, yes,’ Craig replies.

Shit, Robin thinks.

Craig moves on.

‘What was Dr Sharp like?’ Craig asks.

‘Have you watched the series?’ Justin replies. Craig nods. ‘Just like that. Simon is – was – exactly the man you see on TV. So smart. Always two steps ahead. And the bravest sod you’ll ever meet.’

‘He seemed… determined,’ Craig suggests.

White nods. ‘Oh, he was. But that was the way the show was set up – whatever Simon says, goes. If he wanted us to drive into the middle of an EF5 tornado, we would. If he wanted to film in the aftermath of flash flooding, we were there. But nobody ever minded. We would have followed Simon to the ends of the earth, and frequently did.’

‘And how would you describe the relationship between Sharp and Dr Mason?’ Craig asks.

‘Colleagues. Friends.’

‘Colleagues or friends?’ Craig interjects.

‘Friends, I guess. Simon was excited to be working on this project. I know he’d been frustrated.’

‘Why?’

‘In the beginning, when Storm Chasers started out, it was all about the science. Simon got a chance to talk about what was going on, about the weather changes and the meteorological tech that means we can do what we do. But as time went on, the powers that be wanted more action and less talk.’ He frowns. ‘Better ratings. I know Simon missed it. He moaned once: “I’m not a scientist any more, I’m an entertainer.”’

‘And this was his chance to get back to the science?’

‘Yeah. Dr Mason is the best at what he does, but he’s not exactly…’

‘Charismatic?’