Episode 4

Julia’s life is a dark puzzle. She starts to investigate her own past and finds a connection to Ira and an old sawmill on the Westwall. But the jigsaw pieces don't fit together. Meanwhile, an incensed Inspector Roosen confronts Henning, and it transpires that the far-right puppet master Henning is actually Badtke, a high-ranking official from the State Office for the Protection of the Constitution. He had met Ira when she was a confidential informant in the Nazi scene and had started an affair with her. She had gone on to join a network of conspirators that wanted to destabilize the country and take power through a series of bomb attacks.

At the Federal Office for the Protection of the Constitution, Keppler and his boss Dr. Gräf declare their unauthorized plan dead in the water and attempt to wipe away any and all traces of it. In the interim, the police investigating the murder of Wolfgang have come up with a plan to capture Ira. They will use an unwitting Julia as bait to draw her out. But during the burial at the graveyard, events overtake them.