The truck driver Khuong Nguyen lies dead in his cab. Accident or murder? Police students Anastasia, Charlotte, Bruno and Umut celebrate their success with a lavish party: they have secured the coveted internship in the homicide squad.
The patrol police find the elderly Brigitte dead in her bathtub. It would be obvious to assume a fatal accident. Police student Phillip is not blinded and discovers evidence of third-party negligence.
Just released from prison, the convicted rapist Steffen Piatek is murdered - struck down with a single blow. Many hated him, many wanted to see him dead. Anastasia questions Piatek's victims under Kelting's supervision.
A party of the women's soccer team "Concordia Halle" ends fatally for Leo. The boyfriend of the soccer talent Mira is found next to the stands - he was pushed to his death. Charlotte and Anastasia investigate the club's environment.
Star painter Lupo Marx is stabbed to death in his studio. At the crime scene, investigators find a woman in a closet - covered in blood and holding a knife. The woman is Trisha Leupold, Marx's gallery owner and life partner.
Hendrik von Abschatz, the suspect in the case of Anastasia's missing father, cannot be found. And now Nehir Osman, the only possible witness, has also disappeared. The investigators find themselves in a life-threatening situation.
A gruesome sight shocks Malouf, Koko and the rookies: their colleague and instructor Kelting lies dead in front of a house. The investigators analyze traces and clues: it is clearly murder. A neighboring urban gardening project is suspect.
Therapist Farida Höfer is found suffocated in her bed in a clinic for teenagers with eating disorders. The staff and patients are in shock. When the two patients Chiara and Lilli fight, the investigators become aware of them.
A monster on campus is causing Anastasia and Bruno sleepless nights. At the same time, a murder needs to be solved. Moses Stanicek is found dead in his garden shed, his body badly mutilated. He was notorious and feared among his neighbors.
A young woman is found dead in the cemetery of a church community. It is Celeste Rudolf, an theology student who was very involved in the community. The investigation reveals a toxic web of disappointed love, passion and deep faith.
The young undertaker Peggy Lindner is attacked in a lonely forest parking lot and suffocated with a plastic bag. Her body is not discovered until the next day. Peggy's husband Daniel did not report her missing.
The handsome fitness trainer Max Langschild has a fatal accident in his gym. Apparently he died from the dangerous mixing of several cleaning products. It quickly becomes clear that this was not an accident.