‘She’s with the coroner,’ Freya says quietly, looking at her phone. Craig turns to her sharply. ‘Dr Harper,’ she continues, showing them the screen with Steph’s message. ‘She says she wanted to update him first.’

Craig throws her hands up in the air with exasperation. ‘So I’m supposed to hang around here, waiting for something that could potentially destroy my entire case?’

‘If your evidence is as strong as you think it is, then there shouldn’t be a problem, should there?’ Robin retorts.

‘My evidence is fine. You’ve got the file, haven’t you?’

Robin is aware that Craig has been extraordinarily accommodating of him throughout this investigation, polite despite the pressure she must have been under and her senior rank. But he also knows that this is his friend’s freedom at stake. Her desire for results cannot be what’s important here, especially when the evidence is not as cut and dried as it should be.

‘Yes,’ Robin replies. ‘And both you and I know there are holes.’

‘Like what?’

‘Like the fact that the knife only has Sharp’s prints on it? How did Finn kill him without touching the murder weapon?’

‘Perhaps he was wearing gloves.’

‘Gloves you’ve not been able to find? And while we’re on the subject of missing evidence, how about that camera footage?’

‘We’re still working on that.’

‘Not very hard, by the sounds of it.’

‘Okay, fine. Then who killed him, Butler?’ Craig is furious, her face red and blotchy. ‘Who?’

Robin is silent. He has no way to answer that question and she knows it.

‘It’s easy to question someone else’s investigation,’ Craig continues. ‘But harder to find a solution when it’s your neck on the line.’ She winces slightly at her turn of phrase. ‘That man in there,’ Craig says, regaining her composure with an angry finger towards the door, ‘was the only person in the van with Sharp. He had motive. He had opportunity. And the alcohol and drug abuse only show a man falling apart under the pressure from his significantly more successful, popular colleague. And you’re saying he didn’t kill him? Come on! Even you must admit you’re being swayed by your personal relationship.’

A gentle knock on the door interrupts her and they all turn.

‘What?’ Craig shouts.

The door opens and Sophie’s standing there. Robin feels his jaw clench.

‘DI Craig,’ Sophie begins. ‘I’ve been trying to get hold of you.’

‘I know. I got your messages. We can speak later.’

‘No.’ Sophie walks decisively into the room and shuts the door behind her. ‘We need to talk now. It’s about the footage from the night of the storm.’

All four police officers turn towards Sophie. She nervously digs in her bag and pulls out a sheet of paper. She holds it towards Craig.

‘What’s this?’ Craig asks.