Mathias Herz is found beaten to death. Small glass shards in his head wound are puzzling. The victim's wife, Lara Herz, is shocked by her husband's death. According to her statement, he had no enemies.

Fiona Mehring is found dead in a beach bar – she has been poisoned. The first clue leads Mick and Andreas to the Essen branch of a corporate group that helps companies throughout Germany get rid of unwanted employees.

Bestselling author Anja Friedrich is found dead – cause of death: poisoning! The first suspects are revealed by her unusual private life, as Anja Friedrich lived with not one, but two men.

Markus Rietz finds his wife Monika beaten to death in their home. For him, this is the second blow of fate within a short period of time: just a few days earlier, his wife had been in a car accident in which their daughter Paula was seriously injured.

The inconspicuous librarian Karin Hentschel has been murdered. Mick and Andreas investigate and uncover her surprising secret: she was a sex addict!

Dietmar Kuhlmann, Andreas' fencing coach from his youth, has been murdered. Not only the widow of the murdered man, who also knew Andreas as a young boy, mourns the dead man, but also Daniel Wesselburg.

Mick's childhood idol Rudi Moos, German soccer legend and popular advertising icon, disappears without a trace from one minute to the next. Instead, his dead gardener Dragan Pali shows up. The Serbian was shot in the back with a revolver bullet.

At the adult education center in Essen, course instructor Carola Seehagen is found stabbed to death. Carola was the head of the beginner's course for illiterate people, which was also attended by single mother Susi Zinsmeister.

Things get really tough for Mick and Andreas: a colleague from the criminal investigation department is brutally murdered – and Mick and the entire department are suspected of having something to do with it.

A nude cleaner appears at a wild bachelorette party. But during the show, he suddenly collapses and dies. A poison attack! Mick and Andreas take up the investigation.

A dead butcher named Schill is found in the forest. Meisner faces a problem: the dead man is completely drained of blood, and the wound on his neck does not match any weapon.

Schoolgirl Anja Cordt is found murdered in the foyer of Heinrich Heine High School. Shortly before, she had argued with her best friend Romy, but Romy insists she is innocent.

Former prisoner Sven Lohmeyer is murdered shortly after his release from prison. Ten years ago, he and his girlfriend Jana Pacht committed a robbery and shot 16-year-old Juliane Rothstein while fleeing.