A police officer is shot dead during an identity check at Hanover-Langenhagen Airport. What looks like a criminal's panicked reaction becomes increasingly mysterious. All surveillance cameras were out at the time of the crime. For Charlotte Lindholm, however, the case seems clear after just a few hours.

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The body of a 16-year-old girl turns up in an incineration plant.

Charlotte finds herself in high society circles as she investigates the murder of a young girl.

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A 15-year-old girl and her newborn are missing, leaving behind only a trail of blood and unanswered questions.

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Detective Director Liebig was celebrating his 60th birthday at Göttingen police headquarters when the party was suddenly disrupted: there was a serious accident in the neighboring old town. A van crashed into a crowd. Charlotte Lindholm and Liebig's wife Tereza, a doctor at the local hospital, are the first to arrive at the scene of the accident. Ilie, the driver of the car, is taken to the hospital's intensive care unit.

The investigation begins at the same time: What if it was a shooting spree? But what was Ilie's motive for committing this terrible act? To clarify this, Charlotte Lindholm and Anaïs Schmitz delve into the world of low-wage workers. When Charlotte Lindholm doesn't feel sufficiently supported by the Liebig Criminal Directorate in her investigation, she asks her colleague's husband, forensic pathologist Nick Schmitz, for help.

After the death of his colleague Grosz, Thorsten Falke is taking a break in the remote St. Joseph monastery when the parish pastor dies in a fire. Child pornography material is found in his estate, which confirms Falke and his colleague Eve Pötter's suspicion that the fire may have been set intentionally.