Sadie. Sadie fucking Banks. Did everyone know? Their colleagues, their friends? At that moment she remembered the card DS Anderson had left for her and she pulled it out now, staring down at it until with sudden decisiveness she picked up her phone and dialled the number before she could change her mind, before the tsunami broke and dragged her under.

‘DS Anderson.’

She swallowed. ‘It’s Clara Haynes. I— you—’

‘Yes. Hello, Clara, how can I help?’

She forced herself to speak. ‘Luke was having an affair,’ she said, in the unrecognizable, matter-of-fact voice of a stranger. ‘Her name’s Sadie Banks, she works at Brindle too. Maybe you should speak to her. She might have a better idea of where he is.’ Her voice cracked on the last word and when she hung up the pain crashed over her, dragging her down in its vicious undertow, filling her lungs with grief.

A long time later she sat, head in hands, her face raw from crying. What should she do now? Pack her bags and move out? Had Luke simply left her for someone else? Was that all this was: merely a gutless way of telling her she was dumped, that he hadn’t loved her after all?

When she arrived at work the next morning – the thought of staying at home alone in their silent, waiting flat had been unbearable – she hurried towards her magazine’s office, keeping her head down, unable to contemplate how she could begin to answer even the most innocent question about where she’d been. Perhaps the police hadn’t called there yet, she thought hopefully; perhaps no one had an inkling of the bomb that had detonated in the middle of her life. Making eye contact with no one, she made her way quickly to her desk.

When she looked up from her computer thirty seconds later, however, it was to a ring of her colleagues gathered around her desk, staring down at her.

‘Shit, Clara, are you OK?’ asked the features editor.

‘We had the police here yesterday,’ breathed one of the subs.

‘Is there any news of Luke, where do you think he is?’ asked someone else.

‘I don’t know,’ she stammered. ‘They don’t – the police, I mean – they don’t know either.’ She wondered, as she spoke, how many of them knew about Sadie, and felt the heat climb in her cheeks.

For the rest of the morning she tried to distract herself with work, ignoring her colleagues’ sympathetic glances, but by eleven she found herself gazing blankly at her computer screen, unable to concentrate on anything except the thought of Sadie sitting a couple of floors below. At last, before she could change her mind, she clicked open her emails and began to type. ‘Can you meet me at lunch?’

She waited, heart thumping, for a response, and a few seconds later it came: a one-word reply that said simply, ‘OK.’