In the first part of the season "Posthum" ("Posthumously"), we get a brief recap of what has happened so far. Then we follow Lona, Jasper, and Elling to the forensic institute, where the pathologist shares the results of his examination with the team, and the investigators speculate about the course of events.

With Edith having abandoned the train, there is a short wait just in front of the East German border, giving Anna and Sascha time to reconsider.

Elling, Lona, and Jasper continue discussing the investigation results. Lona has discovered something that justifies a trip to Marnow, where Beck regularly stayed at a specific campsite once a year. Lona and Elling set off, leaving Jasper to conduct further investigations on site.

In this final part, there is one touching reunion and a moment of deep sadness. We also learn a little bit about what became of each of the protagonists.

In an effort to find out more about Beck, Lona and Elling question Mr. Bender, the groundskeeper at the campsite in Marnow.

Lona strikes up a conversation with the campsite owner, Elling receives an unexpected offer from a stranger, and Lona gives Jasper an official order to meet her in Marnow.

Elling meets with the mysterious stranger at a restaurant, where he learns more about Beck's abuse of children. She hands him an envelope containing 20,000 euros, so he now finds himself in a moral dilemma...