Perez switched off his mobile. Was this what he’d expected? An eccentric upbringing for Angela. Loveless, driven. It was hardly surprising that she hadn’t turned into a woman who made friends easily. She’d had no practice as a child. He tried to imagine what it must have been like for a girl growing up in a small community, looking different, sounding different. No mother. No television. If there were other kids around, she’d be the subject of their jokes and their gossip, an easy target, a scapegoat. Hardly surprising that she’d developed other ways of getting attention and affection. But he wasn’t sure the conversation with Bryn Pritchard brought him any closer to explaining her violent death.

Through the window he saw a couple of mothers waiting in the schoolyard for the nursery children to come out. Angela’s mother would surely have been younger than Archie Moore. Where was she now? Had she followed her daughter’s career at a distance, seen the news reports of Angela’s death? Perez hit the number for the police station in Lerwick and got through to Sandy Wilson.

‘Are you all set for coming into the Isle tomorrow? Make sure you’re at Grutness early. I’ve asked the boys to take the Shepherd out ahead of time to bring you back. There’s a rare bird on the island and I don’t want the place swamped with birdwatchers.’ He’d hoped to outwit the reporters too, though if the wind continued to drop they’d have no problems chartering planes. ‘There’s something I want you to do this afternoon. I need you to trace the deceased woman’s mother. They’ve had no contact as far as we know since Angela was eleven. The father was a professor at Bristol University so you could start there.’

Sandy yawned. Perez knew this was the sort of task he hated. The folks on the other end of the phone could never understand his accent and anyone with a higher education intimidated him. He’d grown up a bit in the last couple of years but he still had a low boredom threshold.

Perez felt the need to explain why he couldn’t track down Angela’s mother himself. ‘I’m going back to see Maurice. I’ll ask if he knows where the woman might be, but you’ve got access to records I won’t have.’

‘Is it so important to track down the mother? I mean, she could hardly have committed the murder, could she? Not if she wasn’t there. You said yourself it had to be someone staying at the field centre.’

‘Surely she has a right to know her daughter’s dead!’