Stefan hasn't heard from his wife for days and he's starting to get worried, with his mother-in-law Karin they decide to leave it to look for her in Stettin, where they learn that Julia is investigating a private assignment.
Julia's death upsets the family, Stefan doesn't accept it and Karin tries to be distracted working. Meanwhile, the owner of a restaurant is the victim of a fail robbery but the victim and the perpetrator finally end up losing their lives.
Karin is asked by Brendal to help a friend of his who was convicted of shooting her lover. Karin doesn't believe the woman's story of self-defense, so both the German and Polish police try to work out what happened.
The architect Sascha Hoerne was crushed and then drowned. His death shakes the Sievers family. The father-in-law had big plans with him and his future wife is pregnant by him. The brother-in-law is under suspicion.
