Hattie didn’t mention Paul again and there was no other reference to her changing courses so she could work with him. Perhaps her stint as a volunteer was over, because again there was a gap in the letters to her mother. The next ones came from the hospital. He wondered what had changed so dramatically in her life to turn her from an excited young woman to a depressive who needed in-patient treatment.

When she returned to university she never regained the excitement of her time on the dig managed by Paul Berglund. The news was conveyed in a flat, unenthusiastic way and it was all about her academic work. The handwriting was tight and cramped. She didn’t talk about how she was feeling but Perez could sense her unhappiness. She might not be ill but she was very sad. He found the text hard to read. He imagined her in her small cell-like room in the university hall of residence, quite alone, writing to her mother every week because it was what she always did.

The street was very quiet outside, so Perez heard the door of the hotel and the footsteps walking away. He looked out of the window and saw Sophie hurrying off. Her back was towards him so he couldn’t see her face.

Berglund was in the bar. No one else was there, not even Jean, but she must have been there earlier to serve him because he was holding a large glass of red wine. Perez supposed that Sophie had joined him for a drink but the empty glasses had been cleared away.

‘Inspector, can I get you something?’ He was still wearing his suit, but he’d taken off his tie and undone the top button of his shirt.

Perez would have liked another coffee, but he didn’t want to call the barmaid in. This was a conversation he didn’t want anyone listening to. He shook his head and sat down.

‘The church was full,’ Berglund said. ‘Mima must have had a lot of friends.’

‘I wanted to talk about Hattie.’

‘Of course.’

‘Another funeral you’ll have to attend.’

Berglund seemed shocked. ‘I suppose I will. Someone will have to represent the university. That makes it seem horribly real. I presume her mother will deal with the details once the body is released. I’d planned to phone Mrs James tomorrow, to offer our condolences and see if we can help in any way.’

‘You gave me the impression that you hadn’t met Hattie before you started supervising this project.’

‘Did I?’ Berglund frowned. He didn’t have much of a neck and now he tucked his chin towards his chest so it disappeared altogether. It gave him the look of a cartoon bulldog.

Perez looked at him but said nothing, waiting for an explanation.