Deep in the forgotten city of the Deathless Kings, an ancient relic of untold power waits—for one bold enough to steal it. 
When seventeen-year-old Sparrow joined the Thieves Guild she made a vow of binding loyalty to their cause. So when a mission comes along from The Circle, a group of mysterious, dangerous beings who control the Thieves Guild from the shadows, Sparrow is determined to cement her place in the guild. 
What ensues is a death-defying adventure that has Sparrow and her band of thieves venturing into the heart of the forgotten city of the Deathless King. The fate of Sparrow, her companions, and Raithe, the enigmatic yet alluring assassin Sparrow is forced to join forces with during their quest, all hang in the balance as they find themselves battling ancient forces within the tombs and facing the unwavering hold of fate.   
Perfect for fans of Alexandra Bracken and Sabaa Tahir, this new fantasy trilogy from New York Times bestselling author Julie Kagawa will sweep readers into a bold and exciting new world, where a twisted game of destiny has far-reaching consequences.