Tris, Sandry, Briar and Daja return in the latest Circle book, but their formerly close friendship has weakened as they’ve grown apart on their separate adventures. Once closer than siblings, the four no longer understand one another. Nonetheless, when Sandry is summoned to her ancestral lands in Namorn at Empress Berenene’s whim, only her friends—all supremely powerful mages—can protect her from political machinations. Berenene wants Sandry to stay, though Namorn’s unpleasant and misogynistic legal system revolts the quartet. Sandry finds herself wooed by Berenene’s courtiers, while practical Tris is tempted with education and Briar with the palace’s extensive gardens. Daja, meanwhile, finds love with one of Berenene’s ladies. The four come to terms with one another’s passages to adulthood in this surprisingly rich adventure. Main characters all get satisfactory depth, although much development is left tantalizingly unresolved for future offerings. When Pierce first began writing longer books, her pacing was shaky; she’s settled into the length quite well. Satisfying. (Fantasy. 12-14)