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.

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 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...

When Elling arrives at the campsite in Marnow, he is surprised that Lona and Sören Jasper are already on first-name terms. Elling says that, in his opinion, there is nothing suspicious about Beck's presence at the campsite, which Lona finds puzzling.

Elling seems to notice that something is going on between Lona and Sören Jasper. When Elling visits the forensic pathologist, he learns something there that changes everything.

Meier confronts Elling with the fact that their conversations have been recorded and that he can only prevent his career from being ruined if he hands over the investigation file to her.

Lona confronts Elling about his sudden wealth, and Elling admits that he has accepted a bribe and is now being blackmailed. At first Lona is furious, but she eventually calms down and offers to help.

The money is handed over in the parking garage. Elling and Lona have radio contact, which is fortunate, because everything goes differently than expected...