Bottle machines firm CEO Dr. Christian Schneiderhahn's skull is fatally smashed with a missing hammer in the villa he was buying from the heirs trough Korbinan's friend attorney Rainer Fischbach, none of his valuables at hand was stolen, but the home inventory yields a crucial surprise. Neighbour and unhappy employee Winfried Scheuner's wife Nicolette was assisting Christian comparing real estates, and started another (not so) secret affair.