WaPo Duisburg

The WaPo investigates a case of domestic violence on a tanker ship. No sooner have Jäger and his team taken care of the frightened Anna Roth than the next emergency call comes in. A dead body has been found on the same tanker—suffocated by volatile gases in the cargo hold. The dead man is, of all people, the domestic tyrant himself, who worked there as the ship's captain. Carsten Heinrich is convinced that it was the wife, but the WaPo is skeptical and secretly investigates on its own. The dead man was involved in criminal activities. Was that why he had to die?

The WaPo Duisburg is getting a new addition: Mark Neumann is moving from the port of Hamburg to the Ruhr region—and he gets straight down to business.

Luxury watches were stolen from the deck of a yacht and the owner, Jürgen Harksen, was seriously injured. For Heinrich, the case is clear, and he jumps on the first suspect, Serdar Mardin, the yacht club intern. But Arda, who knows Serdar, doubts that he committed the crime and continues to investigate with Mark. The shipyard owner seems suspicious, as does the victim's daughter. But then new evidence emerges: Was Heinrich's initial suspicion correct after all?

Valuable engines are stolen from Kruppka's sailing club. A young novice sailor immediately comes under suspicion, but Kruppka has his doubts.

Shortly after the crime, it becomes clear that the perpetrator or perpetrators must have had an accomplice from the club. A young sailor who is a thorn in the side of many is suspected. However, Kruppka believes that someone is trying to frame him. She does everything she can to find the real culprit—even if it means her vacation with her wife is ruined.

The owner of the beer sorbet cart is dead. The suspects: a rival food-truck operator, the beer supplier, and the victim's brother. Carsten Heinrich hands the case over to the Water Police, as he had been on leave to take his mother to a nursing home. When she refuses to return, however, he comes back on duty and begins investigating in an unconventional way, right on the spot.

After a campaign by environmental activists, dead fish are found and an environmental alarm is triggered. An environmental activist disappears before she can pass on her information. Heinrich does not take the case seriously, but the WaPo uncovers major criminal activities. Privately, Nadine struggles with her ex, who suddenly seeks contact with his daughter Mira. Nadine discovers that there is more to her ex's contact than meets the eye.

The statue "The Sleeping Neptune" is stolen from a company foyer at the port of Duisburg. The owner suspects the artist, as he had fired a former dock worker. When the police try to track down the artist, they discover that he has been murdered. While Jäger, Arda, and Mark investigate the case, Lena is distracted: she finds a teddy bear in her apartment that she cannot explain. She wonders if she is being stalked. 

After a bachelorette party, three women disappear on a pedal boat at the marina. The boat rental company suspects theft. But Arda and Mark find the boat with two sedated women and the third unconscious with a head injury on the banks of the Rhine. It turns out to be a crime. The WaPo team, supported by Carsten Heinrich, must act quickly to catch the perpetrator. Jäger is on vacation and the criminal investigation department is understaffed, which complicates the investigation.

A fisherman disappears without a trace at a campsite on the Rhine. While the police search for him, Carsten Heinrich discovers the body of a man who was convicted of murder ten years ago and recently released. It turns out that the missing angler and the body are the same person. While investigating the old case, they find evidence that the man was innocent and was murdered because he was on the trail of the real killer.