Already on the day after Susanna's death, police officers are in the shelter for asylum seekers in the Berliner Straße in the Erbenheim district of Wiesbaden, looking for the missing girl. They do not know that the 14-year-old spent her last hours here in a room; that her alleged murderer is one of the residents here and is currently on her way to Paris; that his parents and siblings may be on the site right now. It is the 24th of May last year. The police officers do not know anything yet.

For her, the case of Susanna at this moment is a case "as we experience it every day," says a detective on Monday in court. A few meters to the left of her is Ali B., charged with murdering Susanna. He admitted to killing the girl.

Some missing persons did themselves, reports the policewoman. By the time the matter reaches the police station on the table, many people have already turned up; some can be reached on their mobile phone. And more than 90 percent of those wanted were already registered and not the first time ausgeüxt. She speaks of so-called stray dogs who live in youth welfare facilities and are reported by the caregivers as missing.

Missing girl with school problems

For the civil servant and her colleagues Susanna from Mainz is a "missing girl with school problems" whose previous "departures" were not reported. A girl who recently surrounded herself with adolescents "who were conspicuous as missing persons" who skip school and pass the time in Wiesbaden's city center.

For Susanna's mother, the routine of the officers must have been unbearable. Actively, she provided the investigating authorities in Mainz and Wiesbaden with every clue she could get from Susanna's environment. The detective confirmed that they had followed each of these instructions. Therefore, they land on that May 24 in the refugee shelter in Erbenheim, some of Susanna's clique to live there.

But the police do not move on site. Four days later, she tries to locate Susanna's cell phone. It is off. A day later, a telephone communication monitoring is set up, there is no movement, the mobile phone stays off.

On May 29, girlfriends of Susanna report to their mother: They received anonymous phone calls and an unknown man told them that Susanna was dead. Her body was lying on the Erbenheim train tracks.

Unclear circle of friends

The next day a helicopter flies the area around the railway tracks. No abnormalities. The investigators initiate a public search. The police are not progressing. "The whole circle of friends and vipers around Susanna was confusing," says the official in the court.

On 3 June, a Sunday, Mansoor Q. appears on the area. He says he knows that Susanna is dead, where she was buried and who killed her: Ali B., a roommate from the shelter for asylum seekers in Berliner Strasse, where he is also quartered.

Officials return to the refugee facility, but Ali B. and his entire family have since left the shelter. The crime scene is located in a forest area on the railway lines. A detective speaks in court of thick scrub, thicket and thorn hedgerows. The search is complicated.

It is night in Wiesbaden and Mansoor Q. describes in a hearing, what Ali B. has told him: How Susanna met with other young people in Wiesbaden, as they did with Ali B., his younger brother and another man in the Berlin Road to Erbenheim was driven. Like Ali B. and Susanna in the field in the night where he killed the girl.

First went to the police after Ali B. left

Mansoor Q. says he is 13 years old. In fact, he is one year older. He had made "not a particularly shocked impression", rather a bold, serious, says the detective. Sober, relatively emotionless, he described everything he had learned from Ali B. At the second interview, Mansoor Q. then cried and stirred up.

He had only just dared to go to the police because the B. family had left. Whether he trusts Ali B. such an act, the policewoman of Mansoor Q. wants to know. Yes, the B. family is a criminal family to be scared of.

The search continues for three days until police officers discover Susanna's body in a hole on June 6, covered with 30 branches, sometimes up to five meters long. With spoons, shovels and brooms they carry off layer by layer. The deeper it gets into the ground, the firmer the clay layer. Susanna's bus ticket is in a trouser pocket. Her hands clenched her fist.