if there was a direct link between the cases, in spite of the differences in time and location?
In which case, it wasn’t impossible that more missing people could be connected to these four.
The preliminary investigation consisted of the most common sort of police work, the sort that happens at a desk, in front of the computer. Joona and Samuel gathered and organised information about everyone who had gone missing in Sweden and not been traced over the previous ten years.
The idea was to find out if any of those missing people had anything in common beyond the bounds of coincidence.
They laid the various cases on top of each other, as if they were on transparent paper – and slowly something resembling an astronomical map began to appear out of the vague motif of connected points.
The unexpected pattern that emerged was that in many of the cases more than one member of the same family had disappeared.
Joona could remember the silence that had descended upon the room when they stepped back and looked at the result. Forty-five missing people matched that particular criterion. Many of those could probably be dismissed over the following days, but forty-five was still thirty-five more than could reasonably be explained by coincidence.
One wall of Samuel’s office in the National Criminal Investigation Department was covered with a large map of Sweden, dotted with pins to indicate the missing persons.
Obviously they couldn’t assume that all forty-five had been murdered, but for the time being they couldn’t rule any of them out.
Because no known perpetrator could be linked to the times of the disappearances, they started looking for motives and a modus operandi. There were no similarities with cases that had been solved. The murderer they were dealing with this time left no trace of violence, and he hid his victims’ bodies very well.
The choice of victim usually divides serial killers into two groups: organised killers, who always seek out the ideal victim who matches their fantasies as closely as possible. These killers focus on a particular type of person, exclusively seeking out pre-pubertal blond boys, for example.
The other group comprises the disorganised killers – here it is the availability of the victim that counts. The victim primarily fills a role in the murderer’s fantasies, and it doesn’t particularly matter who they really are, or what they look like.
But the serial killer that Joona and Samuel were starting to envisage didn’t seem to fit either of these categories. On the one hand he was disorganised, because the victims were so varied, but on the other hand none of them was especially easy to get hold of.
They were looking for a serial killer who was practically invisible. He didn’t follow a pattern, and left no evidence, no intentional signature.
Days went by without the missing women from Sollentuna being found.
Joona and Samuel had no concrete proof of a serial killer that they could present to their boss. They merely repeated that there couldn’t be any other explanation for all these missing people. Two days later the preliminary investigation was downgraded and the resources for further work reallocated.
But Joona and Samuel couldn’t let it go, and started to devote their free time during the evenings and weekends to the search.
They concentrated on the pattern that suggested that if two people had gone missing from the same family, there was an increased risk of a further family member going missing within the near future.
While they were keeping an eye on the family of the women who had vanished from Sollentuna, two children were reported missing from Tyresö. Mikael and Felicia Kohler-Frost. The children of the well-known author, Reidar Frost.
Joona looks at the petrol gauge as he passes the Statoil filling station and a snow-covered lay-by.
He remembers talking to Reidar Frost and his wife Roseanna Kohler three days after their two children went missing. He didn’t mention his suspicions to them – that they had been murdered by a serial killer whom the police had stopped looking for, a murderer whose existence they had only managed to identify in theory.
Joona just asked his questions, and let the parents cling onto the idea that the children had drowned.
The family lived on Varvsvägen, in a beautiful house facing a sandy beach and the water. There had been several mild weeks and a lot of the snow had thawed. The streets and footpaths were dark and wet. There was barely any ice along the shoreline, and what remained was grey slush.
Joona remembers walking through the house, passing a large kitchen and sitting down at a huge white table next to a window. But Roseanna had closed all the curtains, and although her voice was calm her head was shaking the whole time.
The search for the children was fruitless. There had been countless helicopter searches, divers had been called in, and the water had been dragged for bodies. The surroundings had been searched by chain gangs of both volunteers and specialist dog units.
But no one had seen or heard anything.
Reidar Frost looked like a captured animal.
He just wanted to keep on searching.
Joona had sat opposite the two parents, asking routine questions about whether they had received any threats, if anyone had behaved oddly or differently, if they had felt they were being followed.
‘Everyone thinks they fell in the water,’ the wife had said, her head starting to shake again.
‘You mentioned that they sometimes climb out of the window after their bedtime prayers,’ Joona went on calmly.
‘Obviously, they’re not supposed to,’ Reidar said.
‘But you know that they sometimes creep out and cycle off to see a friend?’
‘Rikard.’
‘Rikard van Horn, number 7 Björnbärsvägen,’ Joona said.
‘We’ve tried talking to Micke and Felicia about it, but … well, they’re children, and I suppose we didn’t think it was that harmful,’ Reidar replied, gently laying his hand over his wife’s.
‘What do they do at Rikard’s?’
‘They never stay for long, just play a bit of Diablo.’
‘They all do,’ Roseanna whispered, pulling her hand away.
‘But on Saturday they didn’t cycle to Rikard’s, but went to Badholmen instead,’ Joona went on. ‘Do they often go there in the evening?’
‘We don’t think so,’ Roseanna
