"Look out Indiana Jones! Here comes Vesper Holly!"... how completely true in this fantastic book by the author of the Prydain Chronicles. Vesper's back, along with her insufferable guardian Brinnie and his suprisingly strong-willed wife, Aunt Mary. The dear girl has dragged them off again, this time to a diamond jubilee for the Grand Duchess of Drackenberg, where they promptly bump into the notorious Professer Desmond Helvitius. Naturally, Vesper wants to know why Helvitius is visiting Drackenberg, so off she goes, dragging Brinnie around with her like Sherlock Holmes dragged Dr. Watson about the streets of London! Like all of Vesper's stories, adventure is the key. Kidnapping, exploding sausages, and a portrait by Leonardo DaVinci follow, making this a non-stop action adventure! Move over, Indiana Jones! Make way for Vesper Holly!