The dead could only speak through the mouths of those left behind, and through the signs they left scattered behind them. Strike had felt the living woman behind the words she had written to friends; he had heard her voice on a telephone held to his ear; but now, looking down on the last thing she had ever seen in her life, he felt strangely close to her. The truth was coming slowly into focus out of the mass of disconnected detail. What he lacked was proof.

His mobile phone rang as he stood there. John Bristow’s name and number were displayed; he took the call.

‘Hi, John, thanks for getting back to me.’

‘No problem. Any news?’ asked the lawyer.

‘Maybe. I’ve had an expert look at Lula’s laptop, and he found out a file of photographs had been deleted from it after Lula died. Do you know anything about that?’

His words were met by complete silence. The only reason Strike knew that they had not been cut off was that he could hear a small amount of background noise at Bristow’s end.

At last the lawyer said, in an altered voice:

‘They were taken off after Lula died?’

‘That’s what the expert says.’

Strike watched a car roll slowly down the street below, and pause halfway along. A woman got out, swathed in fur.

‘I – I’m sorry,’ Bristow said, sounding thoroughly shaken. ‘I’m just – just shocked. Perhaps the police removed this file?’

‘When did you get the laptop back from them?’

‘Oh… sometime in February, I suppose, early February.’

‘This file was removed on March the seventeenth.’

‘But – but this just doesn’t make sense. Nobody knew the password.’

‘Well, evidently somebody did. You said the police told your mother what it was.’

‘My mother certainly wouldn’t have removed—’

‘I’m not suggesting she did. Is there any chance she could have left the laptop open, and running? Or that she gave somebody else the password?’

He thought that Bristow must be in his office. He could hear faint voices in the background, and, distantly, a woman laughing.

‘I suppose that’s possible,’ said Bristow slowly. ‘But who would have removed photographs? Unless… but God, that’s horrible…’

‘What is?’

‘You don’t think one of the nurses could have taken the pictures? To sell to a newspaper? But that’s a dreadful thought… a nurse…’

‘All the expert knows is that they were deleted; there’s no evidence that they were copied and stolen. But as you say – anything’s possible.’

‘But who else – I mean, naturally I hate to think it could be a nurse, but who else could it be? The laptop’s been at my mother’s ever since the police gave it back.’

‘John, are you aware of every visitor your mother’s had in the last three months?’

‘I think so. I mean, obviously, I can’t be sure…’