In the best traditions of Pseudonymous Bosch and Angie Sage, the next children's book by Sean Thomas Odyssey, combining the genres of detective and fantasy, tells the story of the adventures of a brave heroine in search of the thief of a ruby necklace, which gives its wearer incredible power. Burglary in the Museum, uninvited visitors to the new library and a handsome guy who has become the object of Una Crait's attention will create problems, bring destruction and help the young detective understand the political intrigues started by her magical neighbors and investigate a mysterious crime.