Poison that neither smells nor tastes, that kills and makes death look natural. Empress Elisabeth hears for the first time from her lady-in-waiting that such a thing exists.

"Can you believe Oberland was murdered?" she wants to know. "There seems to be no reason why a teacher and librarian would be murdered," Ida replies. "If it weren't for the package he wanted to give Your Majesty..."

Empress Sisi's first case in Vienna in the year 1866.