A homeless man is found dead on Graz's Schlossberg hill. Tour guide Tony Blauer becomes entangled in the mysterious crime and soon finds himself drawn into the world of the "Sandlers." Together with his British friend Duncan, he attempts to solve the case. A long-forgotten secret comes to light and leaves its mark on Graz and its history.

Judith's new love doesn't last long and quickly turns into a life-threatening persecution

A man is murdered on a remote riverbank, and a young woman confesses to the murder to the police that same night. Forensic psychologist Karla Eckhardt identifies the confessed perpetrator as Anna Lobrecht, whom she had classified as a compulsive liar in a report two years ago. It's possible that Lobrecht isn't telling the whole truth this time either.

Dan-Linh, Count Otto's future wife, is kidnapped. He immediately agrees to pay, but when he hands over the money, he finds Dan-Linh dead in the car. The whole family immediately becomes suspects for the two investigators. Envy, hatred and resentment were the feelings that the family had towards Dan-Linh, but which of the dear family was prepared to commit murder?