Das letzte Abendmahl

While searching for poachers, Hubert and Girwidz stumble across the body of farmer Thomas Lengstätter. However, they find no evidence of foul play and assume that he died of natural causes. But pathologist Fuchs comes to a different conclusion. She proves that Lengstätter was the victim of a particularly perfidious murder using a poison that is difficult to detect. Lengstätter's children and heirs quickly come under suspicion, but they cover for each other.