‘Oh.’ Grace Gallagher looked at him now. Pretty eyes sinking into crinkly white skin. A dab of natural colour on each cheek. Her silvery hair hadn’t seen a perm in quite a while, but someone had combed it, perhaps to enable her to face the rigours of the afternoon. The daughter-in-law – or so Rebus supposed the woman on the arm of the chair to be – was rising.

‘Would you like me to…?’

Rebus nodded towards her. ‘I don’t think this’ll take long. Just routine really, when there’s been an accident.’ He looked at Grace, then at the daughter-in-law. ‘Maybe if you could go into the kitchen for five minutes or so?’

She nodded keenly, perhaps a little too keenly. Rebus hadn’t seen her all evening, and so supposed she’d felt duty bound to stay cooped up in here with her mother-in-law. She seemed to relish the prospect of movement.

‘I’ll pop the kettle on,’ she said, brushing past Rebus. He watched the door close, waited as she padded down the short hallway, listened until he heard water running, the sounds of dishes being tidied. Then he turned back to Grace Gallagher, took a deep breath, and walked over towards her, dragging a stiff-backed dining chair with him. This he sat on, only a foot or two from her. He could feel her growing uneasy. She writhed a little in the armchair, then tried to disguise the reaction by reaching for another paper hankie from a box on the floor beside her.

‘This must be a very difficult time for you, Mrs Gallagher,’ Rebus began. He wanted to keep things short and clear cut. He had no evidence, had nothing to play with but a little bit of psychology and the woman’s own state of mind. It might not be enough; he wasn’t sure whether or not he wanted it to be enough. He found himself shifting on the chair. His arm touched the newspaper in his pocket. It felt like a talisman.

‘Dr Aitken told me,’ he continued, ‘that you’d looked after your husband for quite a few years. It can’t have been easy.’