Book Fateless — Julie Kagawa

Seventeen-year-old Sparrow has no family other than the Thieves Guild. They found her, an orphan on the streets of Kovass, and gave her a home, training, and a purpose. Ever since, Sparrow’s sole focus has been proving herself to the guild.

But the guild and the mysterious Circle that controls them are more than simple criminals. They work to bring back the reign of the Deathless Kings, the godlike sorcerers who once ruled over the world. In Sparrow they believe they have found the key to turning back the sands of time.

Betrayed by those closest to her, Sparrow must turn to Raithe – the enigmatic yet alluring assassin sent to eliminate her – to escape the Guild’s shadowy plots. What ensues is a death-defying adventure that takes Sparrow far from home, across the Dust Sea, and into the trackless desert where she will discover that it’s not only her own fate that rests in her hands – but also the fate of the world entire.