76.

Erik picks Joona up from Valhallavgen after driving the young woman to a gynaecologist he knows at the Sophia Hospital.

'Now we know that the Zone exists,' Joona says as he gets in the car. 'But it seems to be a Russian set-up ... where you buy membership by contributing to their illegal activities.'

'And that way you're bound to keep quiet,' Erik says, drumming his fingers on the wheel. 'That's why no one knows anything.'

'We're never going to be able to track it down, and it would take several years to infiltrate.'

Joona looks at his phone and sees that Nils hlen has called him three times in the last hour.

'Now we've only one lead to follow if we're going to find the Zone,' Joona says. 'And that's the woman Rocky called Tina.'

'But she's not alive any more is she?'

'She not in the database, no one's been murdered that way in Sweden,' he replies. 'Having an arm chopped off isn't the sort of thing that's likely to get missed.'

'Maybe it was just a nightmare?'

'Do you believe that?' Joona asks.

'No.'

'Right, let's go and see Nils hlen.'

The Forensic Medicine Inst.i.tute has a number of lecture rooms, but only one room for the display of bodies. The hall is reminiscent of an anatomy theatre. The room is circular, with banks of seating rising higher and higher around the small stage containing the post-mortem table.

From the lobby they can hear Nils hlen's sharp voice through the closed doors. He's just finishing a lecture.

They go in as quietly as they can and sit down. hlen is dressed in his white coat, and is standing beside the blackened body of a man who froze to death.

'And out of everything I've said today, there's one particular thing that you mustn't forget,' Nils hlen says in conclusion. 'A human being isn't dead until it's both dead and warm.'

He puts a gloved hand on the chest of the corpse and gives a bow as the medical students applaud.

Joona and Erik wait until the students have left the room before going down to the central dais. The corpse is giving off a strong smell of yeast and decay.

'I've checked our records as well,' hlen says. 'But there's no mention of that sort of injury ... I've been through the databases covering violent crime, accidents and suicide ... She doesn't exist.'

'But you also checked for me,' Joona says.

'So the obvious answer is that the body hasn't been found,' hlen mutters, taking off his gla.s.ses and polishing them.

'Of course, but-'

'Some are never found,' hlen interrupts. 'Some are found many years later ... and some are found but never identified ... We try dental records and DNA, and keep the bodies for a couple of years ... The people at the National Board of Forensic Medicine are good, but even they have to bury a few unidentified bodies each year.'

'The injuries would still be recorded, though, wouldn't they?' Joona persists.

Nils hlen has a strange glint in his eye as he lowers his voice.

'I've thought of another possibility,' he says. 'There used to be a group of forensic medical officers who collaborated with certain detectives ... They were known as the "Tax Savers", and they believed they could identify in advance the cases that were never going to lead anywhere.'

'You've never told me about that,' Joona says.

'It was back in the eighties ... the Tax Savers didn't want Swedish taxpayers to be burdened with the cost of pointless police investigations and hopeless attempts to identify bodies. It wasn't a major scandal, a few people got ticked off, but it made me think ... When you described Tina as a heroin addict, a prost.i.tute, possibly a victim of human trafficking ...'

'You're wondering if the Tax Savers are still active?' Joona asks.

'No paperwork,' Nils hlen says, clicking his fingers. 'No investigation, no Interpol, the body gets buried as an unknown, and the resources are used elsewhere.'

'But in that case Tina would still be in the database of the National Board of Forensic Medicine,' Erik says.

'Try looking for an unidentified body, natural cause of death, illness,' hlen says.

'Who do I talk to?' Joona asks.

'Talk to Johan in Forensic Genetics, mention my name,' he says. 'Or I could give him a call, seeing as we're here ...'

He scrolls through his contacts, then puts his mobile to his ear.

'h.e.l.lo, this is Professor Nils hlen, I ... no, thank you, it was very enjoyable ... Just offbeat enough, I'd say ...'

hlen circles the body twice as he talks. When he ends the call he stands in silence for a moment. His mouth twitches slightly. The empty benches spread out around them like the growth rings of a huge tree.

'There's only one unknown woman from Stockholm who matches Tina's age during the period in question,' hlen says eventually. 'Either it's her, or her body was never found.'

'So could it be her?' Erik asks.

'The death certificate says heart attack ... there's a reference to another file, but that file doesn't exist ...'

'There's no description of the body?'

'Obviously they kept a DNA sample, fingerprints, dental records,' hlen replies.

'Where is she now?' Joona asks 'She's in Skogskyrkogrden, buried among the trees of the Forest Cemetery.' hlen smiles. 'No name, grave number 32 2 53 332.'

77.

Skogskyrkogrden, to the south of Stockholm, is a Unesco World Heritage site, and holds more than one hundred thousand graves. Erik and Joona walk along the well-tended paths, past the Woodland Chapel, and notice the yellow roses in front of Greta Garbo's red headstone.

Block number 53 is located further away, close to the fence facing Gamla Tyresvgen. The cemetery workers have unloaded a digger on caterpillar tracks from a council truck, and have already dug out the earth above the coffin. The gra.s.s is lying alongside the heap of soil, a tangle of fibrous roots and plump worms.

Nils hlen and his a.s.sistant Frippe are approaching from the other direction, and the four of them greet each other in subdued voices. Frippe has had a haircut and his face looks a bit rounder, but he's still wearing the same old studded belt and washed-out T-shirt with a black Hammerfell logo.

The cab of the digger rotates gently and the hydraulics hiss as the scoop sinks and moves forward, carefully sc.r.a.ping the soil from the lid of the coffin.

As usual Nils is giving Frippe a short lecture, this time about how ammonia, hydrogen sulphide and hydrocarbons are released when proteins and carbohydrates break down.

'The final stage of the decomposition process leaves the skeleton entirely exposed.'

Nils signals to the digger driver to back away. Clumps of clay soil fall from the blade of the scoop. He slides down into the grave with his hand on the edge. The lid of the coffin has given way under the weight of the soil.

He sc.r.a.pes around the edge of the coffin with a spade, then brushes it clean with his hands, inserts the blade of the spade under the lid and tries to prise it open, but the chipboard snaps. There's no strength left in it, it's like wet cardboard.

Nils whispers something to himself, tosses the spade aside and slowly starts removing it, piece by piece, with his hands. He pa.s.ses the pieces to Frippe, until the contents of the grave are entirely uncovered.

The dead body isn't remotely unpleasant, it just looks defenceless.

The skeleton in the coffin looks small, almost like a child's, but Nils hlen a.s.sures them that it belonged to a grown woman.

'One metre sixty-five tall,' he murmurs.

She was buried in a T-shirt and briefs, the fabric is clinging to the skeleton, the curve of the ribcage is intact, but the material has sunk into the pelvis.

An image of a cobalt-blue angel is still visible on the T-shirt.

Frippe walks round the grave taking photographs from every angle. hlen has taken out a small brush which he uses to remove soil and fragments of chipboard from the skeleton.

'The left arm has been chopped off close to the shoulder,' hlen declares.

'We've found the nightmare,' Joona says in a low voice.

They watch hlen carefully turn the skull. The jaw has come loose, but otherwise the cranium is in one piece.

'Deep incisions across the front of the cranium,' hlen says. 'Forehead, zygomatic bone, cheekbone, upper jaw ... the incisions continue across the collarbone and sternum ...'

'The preacher's back,' Erik says with an ominous feeling in the pit of his stomach.

Nils hlen goes on brushing soil away from the body. Next to the hipbone he find a wrist.w.a.tch with a scratched face. The leather strap is gone, turned to grey dust.

'Looks like a man's watch,' he says, picking it up and turning it over.

The back is inscribed with Cyrillic letters. hlen takes out his mobile and takes a picture of the lettering.

'I'll send this to Maria at the Slavic Inst.i.tute,' he mutters.

78.

Joona's just had another cortisone injection, and is in Erik's back garden practising combat techniques with a long wooden pole.

Nils hlen is trying to track down the colleague who signed Tina's death certificate while they wait for the translation of the engraving on the watch, to find out if it can help them make progress.

Erik is sitting at the grand piano, watching his friend's repet.i.tive pattern of blocks and attacks as shadows cross the thin linen curtain.

Like a Chinese shadow-theatre, he thinks, then looks down at the piano keys in front of him.

He was planning to practise his etude, but can't bring himself to try. His mind is too unfocused. He still hasn't got hold of Jackie, and Nelly called him from work an hour ago to ask if she could come over.

Slowly he puts his little finger on a key and strikes it, making the first note echo as his phone starts to ring.

'Erik Maria Bark,' he answers.

'h.e.l.lo,' a high voice says. 'My name is Madeleine Federer, and ...'

'Maddy?' Erik gasps. 'How are you?'

'Fine,' she says quietly. 'I've borrowed Rosita's phone ... I just wanted to say it was nice when you were here with us.'

'I loved spending time with you and your mum,' Erik says.

'Mum misses you, but she's silly and pretends that-'

'You need to listen to her, and-'

'Maddy,' someone calls in the background. 'What are you doing with my phone?'

'Sorry I ruined everything,' the girl says quickly, then the call ends.

Erik slips off his piano stool and just sits on the floor with his hands over his face. After a while he lies back and stares up at the ceiling, thinking that it's time to get a grip on things again and stop taking pills.

He's used to helping patients move on.

When everything is at it darkest, it can only get brighter, he usually says.

He gets up with a sigh, goes and rinses his face, then sits down on the steps outside the gla.s.s door.