Fabel had moved on from trying to make sense of Hanna’s death to trying to make sense of the death of strangers. Fabel had come to know so many names, so many faces of the dead. As head of the Polizei Hamburg’s Murder Commission, Jan Fabel had spent his career getting to know people who were no longer capable of knowing him. He had become a master at reconstructing a life and a personality that was lost to everyone else; to walking in the footsteps of the murdered and understanding the minds of those who had killed them.

What had kept Fabel sane had been the fact that, throughout his career, he had always sought to keep death at arm’s length. He had never been entirely detached: it had always been his empathy for the victims that had given him that critical edge. But since Hanna’s murder, he had tried never to let death come too close to him. The last three cases had changed all that: one officer dead, one seriously wounded and mentally scarred. And twice more he had seen his officers placed in serious peril.

It was time to go. A chance encounter with an old schoolfriend had resulted in an offer of a job. More than a job. An escape into a normal life, whatever that was. To become someone else. It had been a monumental decision for Fabel. And now everyone was trying to talk him out of it. Everyone except Susanne. Susanne saw it as more than a change in Fabel’s career; she saw the opportunity to change the basis of their relationship.

Fabel’s superiors had, with great reluctance, agreed that he would leave the Polizei Hamburg’s Murder Commission at the end of the so-called ‘Hamburg Hairdresser’ case. It had been this case, piled onto the three other serial-killer investigations he had undertaken, that had led Fabel to the final decision to quit. There was, he had decided, just so much horror and fear that one could experience, only so much bearing witness as foul, corrupted and sick minds opened themselves up in front of you, before you started to become more and more like the thing you hunted.

Criminal Director Horst van Heiden was Fabel’s boss, in charge of Hamburg’s Criminal Police, the investigative branch of the Polizei Hamburg. Fabel had been surprised at van Heiden’s persistence in trying to persuade him not to resign. Fabel and van Heiden were, in many ways, opposites. Van Heiden was the typical career police officer, with a background in the force’s uniformed branch. Fabel still saw himself as the accidental detective: an outsider. And he liked to think that he held little regard for the formalities of his occupation.

When Fabel entered the Criminal Director’s office, there was a tall, lean man with prematurely greying hair whom Fabel didn’t recognise waiting with van Heiden.

‘Fabel … allow me to introduce Herr Wagner of the BKA …’ said van Heiden. Fabel shook hands with the federal agent. The BKA was the Bundeskriminalamt – Federal Crime Bureau – the law-enforcement agency with a brief that covered the whole of the Federal Republic. Fabel had worked with them on several occasions, but he had never before encountered Wagner. Maybe this wasn’t going to be all about van Heiden trying to persuade Fabel to remain in the Murder Commission after all. However, Fabel’s hope was dashed with van Heiden’s first utterance.