Ancient universities are full of dark secrets When graduate student Isabel arrives to study at the University of Scotland - in a quiet town with a medieval flair, she is surprised to learn that her supervisor died under strange circumstances. And soon her study friend Rosa disappears. After a while, the girl receives a coded message: Rosa is alive, but kidnapped, and Isabel must complete the research started by her friend, otherwise both will be killed. All crimes are connected with the legend of a huge cursed emerald, which was once planned as a gift to Catherine de Medici. Unraveling one thread after another, Isabelle travels to Florence and Paris, immersing herself in the atmosphere of medieval family secrets with betrayals and betrayals. Will she be able to put together all the pieces of the puzzle to unravel the mystery of the missing emerald four hundred years ago and at the same time save the lives of herself and her friend?< /p>