He considered her, brow furrowed. ‘It was Alison Fournier who alerted the emergency services, Clara. She and your downstairs neighbours dragged you out of your flat. She helped save your life.’

She stared at him, stunned. ‘But … are you sure? I mean, how did she get in?’

‘Your door was open when the couple in the flat below went to investigate the smell of smoke.’

Clara shook her head, unable to make sense of this new information. ‘Open? But—’

‘Were you alone when you went to bed?’ he asked.

‘I – yes. Yes, of course I was …’

‘And you shut the door to your flat securely?’

‘Yes! At least, I think so.’ She remembered how upset she’d been about Mac, the wine she’d drunk, her wooziness as she’d fallen into bed. The door had been closed though, she was sure of it.

‘How’s Mac?’ she asked. ‘Is he OK?’

Anderson nodded. ‘He’s going to be fine. He’s been discharged already.’ He leaned forward, fixing her with his tired grey eyes. ‘The fire was caused deliberately. Officers found a bottle of lighter fluid in your lounge near where it looks to have started. If you’re quite sure you closed the door behind you when you got home last night, whoever got in must have used a key.’ He paused. ‘Is there anyone apart from yourself who has a copy?’

She pulled herself more upright in the bed, aware suddenly that her head ached horribly. ‘I … no. I changed my locks after it was broken into last week.’

‘How many copies of the key did you make?’

‘There were three, one I dropped off at the letting agent, the other I kept, and the only other one I left at Mac’s. I went to stay with him after the break-in.’

Anderson nodded. ‘I see.’

She stared at him, the fog in her brain slowly clearing. Her throat still felt horribly sore. ‘Whoever broke into Mac’s flat yesterday turned it upside down, they were looking for something. They could have taken my key. It was in my bag in Mac’s spare room.’

‘We’ll look into it,’ Anderson said.

She remembered Emily’s visit to her flat and, her words coming out in a rush, blurted, ‘I think it was Tom.’

He looked up sharply. ‘I’m sorry?’

‘I think it was Tom Lawson, Luke’s brother, who attacked Mac and set fire to my flat.’

Anderson blinked. ‘And what makes you say that?’