Joe didn’t say anything. He was thinking that Val Butt had been lying to him. Pawel had still been around in Harbour Street in 1975, when Malcolm Kerr’s office had burned down, and she would have known that. Joe thought she’d have known everything that was going on in her patch. She’d have been that kind of landlady. And what had actually happened the night of Billy Kerr’s birthday party to trigger a murder? A fight that had got out of hand? Two young men scrapping over Margaret, like dogs over a bone.

‘Well?’ Vera was indignant. She’d been expecting congratulations. ‘Now we have everything: motive, opportunity and a skeleton in the cupboard. Or under the concrete. I’ve sent them to bring in Malcolm Kerr. He’ll talk. No reason not to, when he’ll be forced to plead guilty to one murder. We’ll have it all wrapped up by teatime, and the drinks are on me.’

‘What do you want me to do now?’ Joe looked through the window, wondering if he should go back and talk to the woman inside. He didn’t like inconsistencies, and why would Val Butt lie about Margaret’s husband? What could she have to hide at her time of life? But the carers were already helping her to her feet and leading her towards the bathroom. Her nightdress and dressing gown were caught in the waistband of her knickers and a huge bare thigh was exposed. He decided that old people often got confused and there was nothing to be gained by talking to her again.

‘Come back here,’ Vera was saying. ‘You can sit in on the interview.’

Joe switched off his phone and stood for a moment in the street outside the old folks’ bungalows. He had a second crisis of conscience. Perhaps he should knock at the door and talk to Val Butt again, ask her if she knew anything about the body buried in Malcolm Kerr’s yard.

But the moment soon passed and then he found himself smiling. When Vera was happy, her good humour was infectious. Why not be a part of the celebrations? He started the engine and set off for Kimmerston. Arriving into the station expecting a party atmosphere, laughter and the inevitable release of tension after an investigation, he found instead that Vera was furious. He could hear her swearing from the bottom of the stairs. She was so caught up in her rant about the incompetent scum that made up the police service these days that she didn’t notice him entering the room. He slid in beside Charlie.

‘What’s going on?’ He whispered, but Vera wouldn’t have heard a five-piece jazz band in the corner of the room.