As the noise of the plane approached, the conversation moved on to their families, what they’d be doing for half-term, plans for Christmas.

Stella Monkton was small and neat, dressed in a long camel coat and brown leather boots. The only other passengers were Anderson High kids, late home for the mid-term break. They took the plane for granted: it could have been the school bus. They sauntered away to meet their parents, super cool. Angela’s mother followed them away from the plane, then stood and looked around her. The waiting families stared. They’d noted Perez’s presence. News of the stranger’s arrival would be all over Fair Isle before teatime. He wondered how many would guess her identity. At first glance there was no physical resemblance to Angela, who had been tall and strong. Perhaps she’d chatted to the kids on the way and word would get out through them.

Perez had already decided to take her back to Springfield before they went to the field centre. She’d be tired after her early start, would have only been given snacks on the flight into Sumburgh. And he’d find it easier to unpick the complicated family relationship in a more domestic setting.

She stood again by the car and looked east towards Sheep Rock. ‘It’s very beautiful here. Very dramatic. I can see what appealed to Angela.’ Then she sat beside him, with her seat belt fastened and her hands clasped primly in her lap.

James was working and Mary had gone to visit a couple of elderly spinster aunts. The kitchen had been tidied specially for a visitor. There was a lasagne bubbling in the bottom of the Rayburn. New bread. The last of the fruit cake. They sat across the table from each other. He’d given her the seat with the view, a politeness he regretted later in the interview. There were times when she seemed distracted.

She knew what was expected and began her story as soon as the meal was over.

‘Of course I should have taken Angela with me when I left my husband. But at the time I thought he would be better for her. I was ill, severely depressed. Only partly his fault. He had a good job. We were still living then in the home where Angela had grown up. I thought, if I could think clearly at all, that the house would provide stability. And she was bright, determined – much more like her father than me in most ways. It never occurred to me that he’d sell up and move her out into the country, that she’d become one of his projects. His experiments. He said she didn’t want to see me and I believed him. They had always been very close.’

Through the window something seemed to catch her attention. Perez turned to see what had interested her, but there was nothing out of the ordinary.