I loved it, I loved it, I loved it. I‘m so bummed the series is over but also exhilarated because the ending was as perfect as the very first chapter in the first book of the series. This book, like the entire series, zipped along with nonstop adventure, danger, & mystery. Filled with riddles, puzzles, & ciphers, alchemy & Templars, kings & paupers, the story of Christopher Rowe & his friends is exemplary MG historical fiction. Highly recommended.