Upon arriving in the Romany homeland to deliver the Mercator Globes, Petra Kronos, Tomik, and Neel formulate a plan to save Petra's father, who has been transformed into a Gray Man. But when a long-held secret is revealed, Neel finds himself bound to his country. The friends are quickly swept up in an epic battle for power. Thrones are at stake. Spies are afoot. Murder is common. Worst of all, Prince Rodolfo is close to becoming emperor, and ruling half of Europe. How much is Petra willing to sacrifice to defend the people she loves? Her search for answers will take her to castles and cities, through mountains, and even underwater as she tests her strength and gambles her life.

Author Biography

Marie Rutkoski is the author of The Kronos Chronicles, including The Cabinet of Wonders and The Celestial Globe. The Cabinet of Wonders, her debut novel, was named an Indie Next Kids' List Great Read and a Bank Street Best Children's Book of the Year, among other honors. Rutkoski grew up in Bolingbrook, Illinois (a suburb of Chicago), as the oldest of four children. She attended the University of Iowa, where she took Writers' Workshop classes and studied with Pulitzer Prize-winner James Alan McPherson. After graduating, she lived in Moscow and Prague. Upon receiving her Ph.D. from Harvard University, she held dual appointments as a lecturer there in both English and American Literature and Language, and History and Literature. Rutkoski is currently a professor at Brooklyn College, where she teaches Renaissance Drama, children's literature and creative writing. She lives in New York City.