Vera Lanz and her team have every reason to celebrate: in a spectacular solo effort, they arrested the long-sought Ingo Blume, godfather of the south-west drug cartel. But after the fall is before the fall: The next mission blows up the victory celebrations just as Vera and Trumpeter are getting closer. Musician Theo Gottlieb was stabbed to death with a pitchfork on his farm. Vera is quickly convinced that Marcus Schüttler, Gottlieb's girlfriend's ex, is the culprit. However, in the course of the investigation, other suspects join Shaker. The victim's brother, Christoph Gottlieb, was only able to sell their farm after his death in order to finance the reopening of his architecture office.
Gottlieb's girlfriend also had a "valid" motive for killing her lover: her 15-year-old daughter Alexandra claims to have had a sexual relationship with the murdered bohemian. In addition to investigating rural machinations, Vera Lanz also has to fight on her own front: Dominik Schneider, head of the internal department, is investigating Vera in connection with Blume's arrest.

Vera Lanz had imagined this reunion with an old colleague differently – Mario Fechter, an undercover agent in a previously sensational case, is shot by an unknown perpetrator. His ex-colleague Bodo Ecker did not survive the attack. Vera and her team are able to identify the culprit via street surveillance: Piet van Meeren. His trail leads directly to his former client, the gambling king Joseph Berlinger. Thanks to Fechter and Ecker, Berlinger was imprisoned until his death. The murder of the undercover agent and colleague Fechters Anja Schramm was the charge of the then public prosecutor Gero Hoffmann. Berlinger had denied the crime until his death.
Vera is skeptical about the situation in the files: was the gambling king actually framed for murder? Did his son Andy take late revenge for his father? When the badly injured van Meeren tries to hit Fechter's son Aaron, Vera decides to go into hiding with father and son. Last episode of the season. From Friday, October 24, 2014, four new episodes of "Der Kriminalist" will be broadcast.