Doris Renz, divorce lawyer and soloist in a well-known amateur choir, is found murdered. It quickly becomes clear that the victim was rather unpopular in the choir, and Jerry even suspects bullying. The choir member Nina Golling in particular had a bone to pick with the deceased, who had been the choir's soloist for years. Did she eliminate her rival?

But other choir members also had a motive to kill the woman. Were they driven to commit the crime by the agitation? It is thanks in no small part to Johanna that the detectives' attention is drawn to a new lead, which ultimately leads to the solution of the case.

Anton Gerg, head of the renowned carpentry and woodcarving school in Berchtesgaden, is found murdered in the school's wood storage area. The first lead points to Marc Bleyer, a former student of Gerg's who was recently expelled from his design class.

When it turns out that Bleyer is having an affair with Gerg's wife Sabrina, the detectives suspect a murder plot. But then it emerges that the highly acclaimed designer put his students under enormous pressure and passed off their ideas as his own. Could this be the key to solving the case?