Trevor does a brilliant job of creating a fictional country, the tiny Duchy of Letzenstein, existing in between France and Italy, hitting the mark with all the linguistic and cultural details.
Thirteen year-old Catherine Ayre is whisked away from the quiet, boring life she has always known in England and brought to the small duchy of Letzenstein to meet her grandfather, the Grand Duke Edmund. Before long she is caught up in the troubles of her long-lost family and the powder-keg politics of a country divided between the old ways of the royals and the clamoring revolutionaries who want change.
Catherine, alone and isolated outside of an aunt and governess since the death of her parents as an infant, suddenly finds herself with an uncle and cousins, as well as her domineering grandfather. Her unassuming Uncle Constant has been disinherited by his father who despises his son in favor of his arrogant and ambitious nephew Julius. The Princess Yolande of Valmay is destined to wed whoever becomes the next Grand Duke. Catherine's cousins the de Altenberg's are a rambling, warm family and their son Edward becomes a staunch ally and friend. But it is Catherine's distant cousin Rafael le Marre, son of the last grand duke, who completely changes her life. He is a gifted artist whose ramshackle lifestyle led to a terrible accident that has left him with a severely injured back. His return after years abroad wandering following his running away as a teen leads him into Catherine's life and back into Constant's and the rest of the family at a precarious time for the country.
There is plenty of political maneuvering as Catherine is used as a pawn in the struggles between the various factions. She has to contend with mobs, abduction, a harrowing night adrift in a snowstorm, not to mention trying to fit her grandfather's image of a proper heir.
Amidst all the adventure, Trevor weaves truths about honor and courage and nobility.
This was also one of the first books where I found myself and a greater understanding of who I wanted to be.