Her Royal Highness the Princess of Kent, a member of the British Royal Family, is not only a high-ranking person, but also a talented researcher and storyteller. She collects bit by bit and restores the history of her family, rooted in the hoary Middle Ages. "Quicksilver" is the third volume of the Angevin trilogy, which takes place in France in the 15th century. The life story of the famous Bourges merchant Jacques Coeur is truly amazing. He can safely be called the most successful entrepreneur in the history of medieval Europe and the founder of capitalism. Merchant, court treasurer, shipowner, jeweler, head of the Mint, ambassador and closest advisor to the King of France - all this is him, Jacques. The successful trading activities of Jacques Coeur in the mid-15th century led France to an unprecedented economic boom. His patron was Queen Yolande herself, and his closest friend was the young and charming favorite of King Charles VII, Agnes Sorel, the mistress of beauty.