Faber stumbles upon a murder case that connects to a 14-year-old missing person investigation.

A pair of murders rocks an upper-class neighborhood in Köln.

Falke teams up with BKA investigator Julia Grosz on a murder case.

Leitmayr's investigation of a Romanian pimp gets a fast conviction. Batic was not part of the investigation because he was a childhood friend of brothel operator Harry Schneider, for whom the victim supposedly worked. But the total indifference of the defendant irritated him. Back in the office, he asks again for the file of the convicted Romanian, because in all his years of service he had never experienced such a quick confession and not a single attempt to reduce his sentence.

Ballauf and Schenk investigate the stabbing death of a doctor. [Köln]

In the bone collection at the Anatomical Institute of the University of Würzburg, a young doctoral student discovers a skull that doesn't match the rest of the skeleton with which it was filed. The skull is significantly younger than stated in the death certificate. That same morning, twenty-year-old Steffi wants to complain to her mother for not waking her up. But Andrea Schwinn is found strangled in the parlor of the inn that the family has run for generations. Her father, Holger Schwinn, is nowhere to be found. One of his hunting weapons is missing. While Chief Inspector Felix Voss and his colleagues, Chief Inspector Paula Ringelhahn, Inspectors Wanda Goldwasser and Sebastian Fleischer, and the head of forensic science, Michael Schatz, begin their investigation at the inn, an elderly woman pitches a small tent on Jakobsplatz directly in front of the Nuremberg police headquarters because she cannot accept the police's refusal to take action in the case of her missing adult son.

A group of high school girls close ranks over a hit-and-run.

An eight-year-old girl is the only witness to her family's murder. [Köln]

A Turkish businessman's murder puts Eisner and Fellner on the trail of a human trafficking ring.

The Dortmund homicide squad investigates a conflict in the criminal rocker scene.

Ben Schröder is stabbed by a stranger while walking with his family in broad daylight, before the eyes of his wife Ayumi (Luka Omoto), his six-year-old son Taro, and numerous witnesses. During the interrogations, Batic and Leitmayr found a confusing multitude of truths, when the observations of the eyewitnesses contradict each other. The highly complex investigations drag on for several months without any results until the investigation is closed. Then a second victim is stabbed.

At the heart of the story is a student who accuses her brother of murdering another student. The next morning, Maria's body is actually recovered from the fjord. Investigative duo Klaus Borowski and Sarah Brandt find clues as to why Julia's brother could have committed the crime, but Julia's betrayal cannot be explained by the commissioners. Only when they discover that she has secretly converted to Islam does light seem to be slowly coming into the dark. But Borowski and Brandt are not alone in their research: the state protection department at the state criminal office around head Kesting apparently pursues its own unscrupulous interests.

Hanoverian Commissioner Charlotte Lindholm and Kiel Commissioner Klaus Borowski are confronted with a former elite soldier, who wants to take revenge on his ex-girlfriend after his assignment in Afghanistan before her wedding to a comrade.

Karow is held hostage after his key witness gets gunned down in front of him.