At a loss after finishing their end-of-year exams, aubrey and george travel to the gallian capital, lutetia, where it so happens that the lovely caroline is studying natural history. Aubrey wants to pursue a cure for his...At a loss after finishing their end-of-year exams, aubrey and george travel to the gallian capital, lutetia, where it so happens that the lovely caroline is studying natural history. Aubrey wants to pursue a cure for his condition - though his family have other ideas, and he's soon burdened with a royal mystery to solve, old letters to procure, a missing ornithologist to locate and a spot of diplomatic espionage.