The Blood Key (The Equitas, #3)

BLOOD AND BONE. ASH AND STONE.
HE’LL BURN THE WORLD TO ASH AND BONE.

Saran returns to the Third, a wasteland of glass towers and toxic air, to rescue the one person she has left in the world, Rowe Blackwell. Confronted with an impossible choice, she agrees to join Nakar Lifesbane on a mission to retrieve the Body of Life—an ancient magical artifact—from the belly of the Third’s dying world. 

Double-crossed by Roshaud, the President of the Third, Saran and Nakar find themselves trapped in a maze of ruins, mines, and experimental testing facilities. In order to survive and evade the mutant remnants of the Third’s diabolical past, Saran joins forces with her enemy, the one person with a map of the maze burned into his mind. Together they weave their way to the center of the world, and to a truth that will change everything Saran thought she knew about prophecy.

As they grow nearer Nakar’s goal, Saran must decide between opening the door to oblivion and bringing back the man she loves, or the fate of all things bound by time—death.