‘So what happened while you were there?’ Martin leaned forward.

‘She was quite clear-headed for a while, and we chatted a bit about the old days. But then she got confused, and, well, it didn’t make any sense for me to stay, so I excused myself and left. Incredibly tragic. Alzheimer’s is a horrible illness.’

‘What about the phone calls in early June?’ Martin looked at his notes. ‘First one from your phone on the second, then an incoming call from Britta or Herman on the third, and finally another one from their phone on the fourth.’

Axel shook his head. ‘I don’t know anything about that. They must have talked to Erik. But it was probably the same sort of request. And it was actually more natural for Britta to want to see Erik if she’d started regressing into the past. They used to be friends, as I said before.’

‘But the first call was made from your house,’ Martin persisted. ‘Do you know why Erik might have phoned them?’

‘As I also said before, my brother and I may have lived under the same roof, but we didn’t interfere in each other’s business. I have no idea why Erik would have wanted to contact Britta. But maybe he wanted to renew their friendship. People get a little strange in that way, the older they get. Things from the distant past suddenly seem to get closer and assume greater importance.’

Axel realized how true this was as soon as he’d said it. In his mind’s eye he saw jeering people from the past come bounding towards him. He took a firm grip on the armrests of his chair. This wasn’t the right time to allow himself to feel overwhelmed.

‘So you think it was Erik who wanted to see them, for the sake of old friendship?’ asked Martin sceptically.

‘As I said,’ replied Axel, relaxing his grip on the armrests, ‘I have absolutely no idea. But that seems the most logical explanation.’

Martin exchanged a glance with Paula. It seemed unlikely that they’d get any further. Yet he still had a nagging feeling that he was being given only tiny crumbs of something much bigger.

After they left, Axel went back to stand at the window. The same faces began dancing in front of him.

‘Hi, how did it go at the library?’ Patrik’s face lit up when he saw Erica come in the front door.

‘Er… I… didn’t actually go to the library,’ said Erica, with a strange expression on her face.

‘Where did you go then?’ asked Patrik. Maja was taking her afternoon nap and he was cleaning up after their lunch.

‘To see Kristina,’ she said, coming into the kitchen to join him.

‘Kristina who? Oh, you mean my mother?’ said Patrik, astonished. ‘Why did you do that? I’d better check to see that you’re not running a fever.’ He went over to Erica and pressed his hand to her forehead. She waved him away.

‘Hey, it’s not all that odd. She’s my mother-in-law, after all. Why shouldn’t I go over to visit her on the spur of the moment?’

‘Oh, right,’ said Patrik, laughing. ‘Okay, out with it. Why did you want to see my mother?’

Erica told him about the sudden brainwave she’d had outside the library about Kristina’s friendship with her mother. And then she told him about Kristina’s peculiar reaction, and how she’d revealed that Elsy had had a love affair with the Norwegian who had fled from the Germans. ‘But she refused to tell me anything else,’ said Erica, sounding frustrated. ‘Or maybe that’s all she knew. I’m not sure. But it seemed that Hans Olavsen abandoned my mother in some way. He left Fjällbacka and, according to Kristina, Elsy told her that he’d gone back to Norway.’

‘So what are you going to do now?’ asked Patrik, putting the lunch leftovers in the refrigerator.

‘I’m going to track him down, of course,’ said Erica, heading for the living room. ‘By the way, I think we should invite Kristina over on Sunday. So she can spend some time with Maja.’

‘Now I’m positive that you must have a fever,’ laughed Patrik. ‘But all right, I’ll ring Mamma later and ask her if she’d like to come over for coffee on Sunday. But she may not be able to. You know how busy she always is.’

‘Uh-huh,’ he heard Erica say from the living room in a strange tone of voice. Patrik shook his head. Women. He would never understand them. But maybe that was the whole point.

‘What’s this?’ called Erica.

Patrik went to see what she was talking about. She was pointing at the folder on the coffee table, and for a second Patrik wanted to kick himself for not hiding it away before she came home. But he knew her well enough to realize that it was too late to keep it from her now.

‘That’s all the investigative material from the Erik Frankel murder case,’ he told her, raising an admonitory finger. ‘And you’re not to tell anybody about what you happen to read in that file. All right?’

‘Okay, okay,’ said Erica with amusement as she waved him away like an annoying fly. Then she sat down on the sofa and started leafing through the documents and photographs.

An hour later she’d gone through all the material in the folder and started over again. Patrik had looked in on her several times, but eventually gave up any attempt to get her attention. Instead, he sat down with the morning newspaper, which he hadn’t yet had time to read.

‘You don’t have much physical evidence to go on,’ said Erica, running her finger over the techs’ report.

‘No, it seems pretty scanty,’ said Patrik, putting down the newspaper. ‘In their library there were no fingerprints other than those belonging to Erik and Axel and the two boys who found the body. Nothing seems to be missing, and the footprints don’t belong to anyone else either. The murder weapon was under the desk. A weapon that was already on the scene, so to speak.’

‘Not a premeditated murder, in other words. Most likely committed on impulse,’ mused Erica.

‘Right, unless, of course, somebody knew about the stone bust on the window sill.’ Patrik was again struck by an idea that had occurred to him a couple of days ago. ‘Tell me again, when exactly did you go see Erik Frankel to show him the medal?’

‘Why do you want to know?’ asked Erica, still sounding as if she were far away.

‘I’m not sure. It might not be important at all. But it would be good to know.’

‘It was the day before we went to visit Nordens Ark wild animal park with Maja,’ said Erica, still looking through the documents. ‘Wasn’t that on the third of June? In that case, it was on the second that I visited Erik.’

‘Did you ever get any information about the medal? Did he say anything while you were there?’

‘I would have told you as soon as I got home if he had,’ said Erica. ‘No, he just said that he wanted to do some more checking before he told me anything about it.’

‘So you still don’t know what kind of Nazi medal it is?’

‘No,’ said Erica, giving Patrik a meditative look. ‘But that’s definitely something I need to find out. I’ll figure out tomorrow where I should start looking.’ She turned her attention back to the folder and studied the photos from the crime scene. She picked up the picture on top and squinted.

‘It’s impossible to…’ she muttered, then got to her feet and headed upstairs.

‘What is it?’ asked Patrik, but she didn’t reply. A moment later Erica returned, brandishing a magnifying glass.

‘What are you doing?’ he asked, peering at his wife over the top of his newspaper.

‘I’m not sure. It’s probably nothing, but… it looks like somebody scribbled something on the notepad on Erik’s desk. But I can’t really see…’ She bent closer to the photo, putting the magnifying glass on top of a little white patch, which was the notepad in the picture.

‘I think it says…’ She squinted again. ‘I think it says “Ignoto Militi”.’

‘Really? And what’s that supposed to mean?’ said Patrik.

‘I don’t know. Something to do with the military, I imagine. It’s probably nothing. Just scribbles,’ she said, sounding disappointed.