Inside, Sandy and Perez had started to eat. Perez was making notes, methodical, just as when he’d transcribed Eleanor’s scribbling. He reached out for a piece of bread with his left hand while he was still focused on writing with his right. Willow poured herself a glass of water from the tap and wondered how long they could continue to run the operation from Springfield House. This felt like an investigation from a different age, the three of them left to run the inquiry without outside interference. A Special Operations team during the war, perhaps a resistance group in a strange land. Soon she’d be under pressure to move back to the police station in Lerwick, where they’d have the technical support to investigate in a more orthodox way. And where her boss would insist on regular conference-call updates from Inverness. He was already worrying about the budget. ‘Don’t think you can claim overtime because you’re staying out there. That’s your choice.’ When the three English people moved south they’d have no real excuse for being in Unst, so the following morning she’d hand Springfield House back to David and his memories.

She wondered what he’d do then. He had no real friends in the islands. Charles had been the sociable one, dropping into the bar occasionally in the evenings to chat to the locals. David had been happy to make things run smoothly behind the scenes. She suspected that he would sell up and move back to an anonymous flat in some small university town. He’d spend his days walking the hills and remembering with regret the only time he ever took a risk.

Perez looked up from his notes. ‘How is he?’

‘Angry,’ she said. ‘Trying to exhaust himself with digging. As if he could bring the man back by turning over the whole plot.’ There was a clock on the wall and in the silence she heard it ticking, marking down the seconds until they would have to leave. The pressure felt tight around her head and she forced herself to breathe slowly. ‘What have you got for me? Sandy, any news on the mysterious Monica mentioned in Eleanor’s notes? We wondered if she might be Sarah Malcolmson’s daughter.’

Sandy had his mouth full of smoked mackerel and bread and she had to wait for him to speak, and then he was full of apologies. Perez looked up from his writing again. ‘Just get on with it, man!’

‘Once Mary Lomax turned up to wait with the body, I went down to Voxter.’ He looked anxious. ‘You weren’t here, but I thought that would be the best thing to do. I know you’ve talked to George already, Jimmy, but I thought he might know more about Sarah’s daughter than he said. He would have met her at the funeral, so he’d have known her name at least.’