McGuire continues the misadventures of changeling PI October Daye in this intense eighth urban fantasy novel (after Chimes at Midnight), which serves to wrap up and tie together many storylines from the previous installments. Toby Daye gets the shock of her lifetime when her old enemy, Simon Torquill—the man who turned her into a fish for 14 years—shows up on her doorstep, claiming he's been on her side all along. The shock compounds when she learns that they're related. Finally, it seems as though Toby will learn the true motivations behind the fateful events of so long ago, but the true mastermind is the last person she'd ever expect. Now Toby and her friends must face off against a terrifyingly powerful foe before the entire hidden kingdom of the Fae falls under the sway of evil. As usual, McGuire puts her heroine through the wringer, repeatedly pushing her to the brink of death in her quest to do the right thing. The tension is high, and the stakes have never been higher, as McGuire draws on elements all the way from the beginning of the series to deliver a pulse-pounding, often surprising tale. Agent: Diana Fox, Fox Literary. (Sept.)