As snow buries 8th-century Mosul, scholar Dabir and swordsman Captain Asim find their quiet lives upended by Najya, a Persian noblewoman fleeing a sinister cabal. Enchanted against her will, she is bound to seek powerful relics known as the bones of the old ones—artifacts capable of unleashing a frozen age upon the world.
To save Najya and stop the cabal, Dabir and Asim embark on a perilous journey through the worst winter in memory. Hunted by a shape-shifting assassin and forced into uneasy alliance with Lydia, a treacherous Greek necromancer, they face dangers that test loyalty, courage, and desire.
But the deeper they go, the more perilous Najya’s fate becomes. If the enchantment claims her soul, the world itself may fall to ice.
