'Everybody she doesn't know,' said Ragnhild. 'Unless they're men, of course.'

'And people she doesn't know all that well?'

'No ...'

'Yes people like Albertine, for example. She's only looked after you five or six times. Kristiane might call Albertine "the lady" sometimes, mightn't she?'

Ragnhild laughed out loud. The tears on her eyelashes sparkled in the bright light in the bathroom.

'Silly Mummy! Kristiane calls Albertine Albertine, of course. But we don't need a babysitter today, do we Mummy? You're going to be here and-'

The lady was dead.

'Yes, of course,' said Johanne. 'I'm going to look after you today.'

She was no longer there.

It wasn't Johanne who took out a fluoride tablet and popped it in Ragnhild's mouth. It wasn't Johanne Vik who walked calmly into the kitchen to pick up the lunch boxes without even glancing at the newspaper. As she approached the stairs leading down to the outside door, she could hardly feel the soft little hand in hers.

The soul. You can't see it leaving.

Christmas dinner.

Kristiane's words when they were talking about death.

'Mummy,' said Ragnhild when she had put her boots on. 'I think you're being really, really funny.'

Johanne couldn't bring herself to reply.

Couldn't even manage a smile.

Adam had always thought of Lukas Lysgaard as an extremely serious young man. Perhaps that wasn't so strange; after all they had met in tragic circ.u.mstances. And yet he still thought he could detect something brooding, almost melancholy in Lukas's demeanour. Something not necessarily related to his mother's death.

He had never seen Lukas smile.

At the moment the man looked like a drowned cat, and the crooked smile seemed foolish.

'Morning,' he said, holding out his hand before changing his mind and withdrawing it. 'Cold and soaking wet. I do apologize.'

'We can go and sit in my car. It's warm in there.'

Lukas obediently followed.

'So,' said Adam, sliding into the driver's seat and placing his hands on the wheel without starting the car. 'What was all that about?'

Lukas was still wearing the same expression, a silly teenager's grin which suggested he hadn't a clue what he was going to say.

'Well,' he said, taking his time. 'I just wanted to ... When I was little ... before we moved to Stavanger, I used to do that sometimes. Climb across the roof. Playing the tough guy, perhaps. My mother was terrified when she caught me once. It was ... cool.'

'Mm,' Adam nodded. 'I'm sure it was.' He drummed his fingers on the steering wheel. 'And that's why you decided to do the same thing again just before you turn thirty, in the pouring rain in January, a couple of weeks after your mother's death, while your father is in the process of having some kind of breakdown?'

A sudden burst of hail rattled against the roof of the car. The noise was deafening. Adam took advantage of the pause in the conversation to start the car and turn the heating on full. He hadn't really paid much attention to how the handbrake worked when the man at Avis was trying to explain, so he sat there with his foot on the brake pedal and the car in neutral.

'Lukas, I have no intention of ...'

Lukas snivelled and half-turned in the cramped seat.

'I have no intention of handling you with kid gloves any more, OK?' He looked the other man straight in the eye. 'You're an adult, a well-educated father of three children. It's a little while now since your mother died. To be perfectly honest, I'm getting rather tired of the fact that you won't answer my questions.'

'But I've answered everything you've-'

'Shut up!' Adam snapped, leaning towards him. 'A great deal has been said about my patience, Lukas. Some people say I'm too nice. Too nice for my own good, they sometimes maintain. But if you think for one moment that I'm going to let you leave here before you've explained to me what that performance up on the roof was all about, then you're wrong. Completely, totally and utterly b.l.o.o.d.y wrong.'

The windows steamed up. Lukas didn't speak.

'What were you doing on the roof ?' Adam persisted.

'I was coming down from the attic.'

Adam banged his fists on the steering wheel so hard that it shook.

'What the h.e.l.l were you doing in the attic, and why couldn't you come down the stairs like a normal person?'

'This has nothing to do with my mother's death,' Lukas mumbled, looking away. 'It's to do with something else. Something ... personal.'

His teeth had begun to chatter, and he wrapped his arms around his body.

'I'll decide whether it's personal or not,' Adam hissed. 'And you have exactly twenty seconds from now to come up with some satisfactory answers. Otherwise I promise you I'll b.l.o.o.d.y well lock you up until you start cooperating.'

Lukas stared at him with a mixture of disbelief and something that was beginning to resemble fear.

'I was looking for something,' he whispered almost inaudibly.

'What?'

'Something quite ... something that ...'

He put his face in his hands.

'A photo,' said Adam. It was more of a statement than a question. 'A photograph.'

Lukas stopped breathing.

'The one that was in your mother's bedroom,' said Adam. 'The one that was there when I came to see you the day after the murder, but then disappeared.'

The shower of hail had turned into torrential rain, huge drops exploding against the windscreen. The world outside the car was blurred and undefined. It was as if they were sitting inside a coc.o.o.n, and Adam could feel the unfamiliar, peculiar fury ebbing away as quickly as it had come.

'How did you know?' asked Lukas, his hands dropping to his knee.

'I didn't know. I guessed. Did you find it?'

'No.'

Adam sighed and tried once more to find a comfortable sitting position in which he could relax.

'Who is the photo of ?'

'I don't know. Honestly. I really don't know.'

'But you have a theory,' said Adam.

Once again silence fell. A car came towards them, its headlights transforming the windscreen into a kaleidoscope of yellow and pale grey, before leaving the interior in semi-darkness once more.

Lukas didn't speak.

'I'm perfectly serious,' Adam said quietly. 'I will do everything in my power to make life difficult for you unless you start communicating right now.'

'I think I might have a sister somewhere. The photograph might be of my sister. My older sister.'

A child, thought Adam. The same idea had occurred to him several days ago.

A child that had disappeared. A child that perhaps hadn't disappeared after all.

'Thank you,' he said almost inaudibly. 'I just wish you'd found the photo.'

'But I didn't. Presumably my father got rid of it. What would you have done with it? If I'd found it, I mean?'

Adam smiled for the first time since Lukas came down from the roof. He ran his fingers through his hair and shook his head slightly.

'If we had a photograph, Lukas, we'd find your sister in no time. If she's still alive, and doesn't live too far from Norway. If she is your sister, that is. We don't know. We don't know whether that photograph has anything whatsoever to do with the murder of your mother. But I can a.s.sure you that I would have devoted some time to finding out!'

'But what would you ... ? How could you use an anonymous photograph to ... ?'

'We have huge databases. Comprehensive computer programs. And if all the technology in the world wasn't enough, then ...'

The foot on the brake pedal was going to sleep, so he put the car in first gear and switched off the engine.

'If I had to knock on every door in Bergen myself, if I had to put up posters with my own hands all over the country, ring round every single TV station and newspaper, I would find her. You can rest a.s.sured of that.'

Lukas nodded.

'That's what I thought,' he said. 'That's exactly what I thought you'd say. Can I go now? My car's parked just up the road.'

Adam's eyes narrowed as he looked at Lukas.

'Yes. But don't forget what I've said to you today. From now on it's zero tolerance as far as I'm concerned when it comes to keeping secrets. OK?'

'OK,' Lukas nodded, opening the door. 'I'll be in touch.'

Once outside the car, he turned and leaned in.

'Thank you for not saying anything to my father,' he said.

'No problem,' said Adam, waving as he started the engine, indicated and pulled away.

Lukas scurried to his own car, keeping one hand on his stomach where he could feel the outline of a photograph he had no intention of sharing with anyone.

Not yet, anyway.

'School isn't over yet,' said Kristiane for at least the fiftieth time when they eventually got home. 'School isn't over yet.'

'No,' Johanne said calmly. 'But I want to talk to you about something really important, sweetheart. That's why I had to pick you up early today.'

'School isn't over yet,' Kristiane repeated, walking up the stairs like a mechanical doll. 'School finishes at four o'clock, and then I'm going to Daddy's. I'm staying at Daddy's today. School finishes at four o'clock.'

Johanne followed her without saying any more. Only when they were in the living room did she spread her hands encouragingly and confess: 'We're going to have a duvet day today, Kristiane! Just the two of us! Would you like some hot chocolate with whipped cream?'

'Dam-di-rum-ram,' said Kristiane as she slowly began rocking from side to side on the sofa.

Johanne went over to her daughter and sat down beside her. She pulled Kristiane's sweater and vest out of the waistband of her trousers and allowed her fingers to dance gently over her daughter's slender young back. Kristiane smiled and lay down across her knee. They sat there for several minutes until Kristiane began to sing a folk song.

'Bind deg ein blomekrans, kom so til leik og dans, fela ho let no s vakkert i lund.'

'That's a lovely song,' whispered Johanne.

'Sit ikkje stur og tung, syn at du og er ung ...'

Kristiane stopped singing.

'A lovely spring song,' Johanne said. 'A spring song in January. What a clever girl you are.'

'If you sing about the spring, it will come.'

Kristiane's laughter was as fragile as gla.s.s. Johanne ran her forefinger along the contours of her spine, all the way down from the nape of her neck.

'That tickles,' Kristiane smiled.

'Do it again.' 'Do you remember Aunt Marie's wedding?'

'Of course. Where's Sulamit, anyway?'

'Sulamit was worn out, sweetheart. You remember that, don't you?'

When she was one year old, Kristiane had been given a little red fire engine. She decided it was actually a cat, and called it Sulamit. It had been her faithful companion for more than eight years. The wheels had fallen off one by one, the colours had faded. The ladder on the roof was long gone. The eyes on the headlights were blind, and little Sulamit looked like neither a fire engine nor a cat when Adam reversed over it by mistake on the drive one day.