Even the fridge was still here, an old Electrolux with a split rubber seal. But that wasn’t still working, surely? Cooper opened the door, and was surprised to see the interior light come on, and feel a draught of cold air on his face. But then he saw why it was switched on. The builders had been keeping their milk in it, ready for their tea breaks. Their carton of semi-skimmed sat among some less reassuring items – jars without labels, tins that had been opened and left to grow mould, as if someone had been trying to culture penicillin. The contents of the nearest jar had crystallized and lay on the bottom, defying him to figure out what they’d originally been.

The smell was disturbing, and Cooper shut the door again quickly. The fridge responded by breaking into an unsteady hum, rattling slightly on the tiled floor.

As he moved around the house, Cooper felt the skin on the back of his neck begin to crawl. The surroundings were innocuous enough, if depressing. But the atmosphere was really bad. His instincts were telling him that something awful had happened here at Pity Wood Farm. Painful memories had imprinted themselves into the walls, the aftershock of some traumatic event still shuddered in the air.

Cooper shivered, and tried to put the sensation aside. It was the sort of feeling that he couldn’t mention, particularly to Diane Fry. He’d been accused of being over-imaginative too often to risk the put-down. Evidence was all that anyone was interested in, and he had none of that.

He might describe his feeling to Liz when he saw her – she would understand what he meant. Cooper glanced at his watch. Hopefully that might be tonight, if he was lucky. The sense of urgency that pervaded most major crime scenes was missing from Pity Wood – presumably because the body was judged to be too old. The twenty-four-hour rule didn’t apply here. Vital evidence that could disappear in the first day or so after a murder was long gone in this case. Anything that was left would be preserved down there, in the mud with the body – or here, inside the house. Better to take it slow and carefully, so that nothing remaining was missed.

That’s what he’d be thinking if he was SIO, anyway. Not that he was ever likely to reach that position – you needed to be promoted at regular intervals to achieve it. He’d probably slipped too far behind already when he failed to get his promotion to DS. He was thirty, after all, and there would be eager young officers overtaking him before he knew it. Just the way it had happened to Gavin Murfin, and many others.