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Esta’s parents were murdered. Her life was stolen. And everything she knew about magic was a lie. She thought the Book of Mysteries held the key to freeing the Mageus from the Order’s grasp, but the danger within its pages was greater than she ever imagined.

Now the Book’s furious power lives inside Harte. If he can’t control it, it will rip apart the world to get its revenge, and it will use Esta to do it.

To bind the power, Esta and Harte must track down four elemental stones scattered across the continent. But the world outside the city is like nothing they expected. There are Mageus beyond the Brink not willing to live in the shadows—and the Order isn’t alone in its mission to crush them.

In St. Louis, the extravagant World’s Fair hides the first stone, but an old enemy is out for revenge and a new enemy is emerging. And back in New York, Viola and Jianyu must defeat a traitor in a city on the verge of chaos.

As past and future collide, time is running out to rewrite history—even for a time-traveling thief.