He woke before it was light. The storm still there in the background, taken for granted now. There was a knock on the door, his father’s voice as quiet as he could manage. ‘Jimmy, you need to get up.’

He thought there must be some community disaster. He remembered being called from his bed as a young man, when old Annie had fallen ill and they’d needed an ambulance flight in the middle of the night. They’d lit fires along the airstrip to mark the way for the plane to come in, all of the island men working together, the women left behind to mind the bairns.

Fran stirred but she didn’t wake. In the kitchen his father was making tea. He was wearing a cardigan over his pyjamas. That seemed odd to Perez. Why wasn’t the man dressed? His father was the nearest thing the island had to a leader and he should be out there to supervise if there was a problem. Then he thought maybe his mother was ill and they were waiting for the nurse who was resident on the island. No way would a doctor get in this morning.

‘They want you up at the field centre,’ James said, breaking into his thoughts. ‘You can take the car. I’ll not be going far today.’

‘What’s wrong?’ Jimmy drank the tea, helped himself to a couple of home-made ginger biscuits. He was still half asleep. ‘Why do they want me?’

‘You’re the police, aren’t you?’ James looked up. ‘There’s been a murder.’

Perez had to bang on the lighthouse door to be let in, because it was locked. It was still dark and the beam from the tower circled way over his head. The locked door struck him as unusual, but perhaps someone had watched crime dramas on television and realized it was important to keep people away from the scene. Jane came at once to open up. She was fully dressed in jeans and a sweater, though it wasn’t yet seven thirty. Inside, all the lights were on. The lighthouse was too far from the other houses to be on mains electricity and he heard the buzz of the generator in the distance. Jane looked very pale but quite composed.

‘In here.’ She opened a door that led directly from the lobby. ‘In the bird room.’

He stood in the doorway and looked inside. It was a small square space with one window facing east. He supposed all the equipment was to do with the business of ornithology. There were plastic tubes covered with small metal rings of different sizes hanging from one of the shelves, pliers, a set of small balance scales, a pile of small cotton bags with drawstring tops. There was the base field centre smell of wood from the floors, but it was overlaid by something faint and organic, which he supposed came from the birds: the oil on their feathers, the muck left in the bags while they were waiting to be ringed.

Under the window there was a wooden desk and a swivel chair. Sitting on the chair was a woman. Angela was slumped across the desk as if she’d fallen asleep in the middle of her work. But in her back was a knife. It had an ivory handle that protruded through the scarlet silk top she’d been wearing the evening before. There wasn’t a great deal of blood and no sign of a struggle. The knife had gone in just to the left of the spine and under the shoulder blade. Straight into the heart. Either the killer had known what to do or it had been a lucky strike. Lucky for him at least. Twisted through the black hair, like a garland, was a circle of white feathers. It gave Angela a frivolous air, reminded Perez of one of those flimsy hats that fashionable women wore to Ascot. She certainly hadn’t been wearing feathers in her hair when he’d last seen her and he realized now that they’d all fall away if she stood up. The arrangement had been made after her death.

‘Who found her?’ Perez struggled to make this real. It was too close to home and the image was like the jacket of one of the old-fashioned detective stories his mother had enjoyed. Even the feathers belonged to a different era.

‘Ben Catchpole, the assistant warden. It was his turn to do the trap round. He came in to collect some bird bags on his way out.’

‘Where’s Maurice?’

‘In the kitchen. I woke him to tell him. Ben’s there too.’

Perez looked more closely at the still figure. ‘Didn’t Maurice realize something was wrong when she didn’t come to bed?’

‘He’s in no state to discuss details.’ The words were sharp, a reproof. ‘I haven’t asked him.’

‘Do you always lock the main door of the centre?’ Perez spoke as if he were only vaguely interested in the routine of the place, as if it could have no possible significance to the crime.

‘No,’ Jane said. ‘Of course not. But the wind was so strong last night that it kept blowing open. I locked it before I went to bed to stop it banging.’

‘Was Angela in the bird room then?’

Jane paused. Perez thought she understood quite clearly the implication of the question and was considering lying. At last she said: ‘No, the bird room door was open and I could see inside. It was empty then.’

So this wasn’t the work of one of the islanders. Whoever had killed Angela had been in the lighthouse when Jane locked the door.

Perez stood for a moment. Thoughts chased through his head. First that he needed coffee. He’d not been drunk the night before, but he had a faint headache and his brain was sluggish and disengaged. He’d slept too heavily. Then that this was a complete nightmare. How long would it be before a crime scene investigator could get in to the island? Two days at least, according to the latest forecast by Dave Wheeler, Fair Isle’s met officer. Would the body have to stay here until then? He’d need to phone the team in Inverness and get advice. But first coffee and a few words with Maurice. This would probably be very simple. A domestic row. He could understand how that could happen in the fraught and claustrophobic atmosphere that developed during a gale, though it didn’t explain the feathers twisted through the long black hair.

‘Is it possible to lock the bird room door?’

Jane looked dubious, disappeared and returned a few moments later with a bunch of heavy, old-fashioned keys. ‘These have been hanging in the larder since I first came here.’

The third key he tried fitted. He locked the door and followed her through the common room, where the night before they’d all sat drinking and laughing, to the kitchen.

It was, he saw at once, Jane’s domain. The men sitting at the table looked up when she came in and seemed comforted by her presence. She fetched ground coffee from the fridge and filled the kettle. Maurice was wearing pyjamas and a dressing gown. He was unshaven, red-eyed.

‘I can’t believe it,’ he said. ‘I want to see her again. There must be a mistake.’

‘I’m afraid there’s no mistake.’ Perez sat beside him. This didn’t seem like a man about to confess to murdering his wife. And if it were a family affair, surely the daughter would be a more likely suspect? Maurice half-rose to his feet as if he were about to demand to be taken to Angela, then seemed to find the effort too much for him and sat down heavily again.

Ben Catchpole was skinny, with wild red hair. Perez had met him for the first time at the party the night before. He came from the West Country and had a soft rural accent. Perez tried to replay the conversation of the previous evening in his head. What had they discussed? The decline of seabirds. That had been the subject of Ben’s doctorate, though it seemed to Perez that he hardly looked old enough to be an undergraduate, never mind to have gained a PhD. He’d been passionate, had railed against politicians and environmentalists for their cowardice in dealing with the problem. Fran had joined in the conversation and Perez had seen at once that she liked the young man. Later in the evening Perez had overheard Ben telling her he’d been an active member of Greenpeace as a student, remembered a description of a stint at sea monitoring the tuna fishery.