Relics of Ruin (Books of the Usurper #2)

"The conspiracy at the heart of the empire has been revealed. The Archivists played a key role in solving a brutal murder and uncovering one of the empire's longest kept secrets. Now, what's left in its wake are a series of unearthed artifacts, one shaken city, and the shocking truth not dared spoken aloud. Just as the empire has begun to regain normalcy, another mystery unveils itself when a stolen ancient relic is found. Only no one knew that it was missing from its sacred vault in the first place. And now that the real one has been recovered, who replaced it with a fake? With Quill and Amadea at the heart of another mystery, they will need to quickly follow the clues that all lead back to this new relic. Because all the while, an old enemy is gathering strength beyond the Salt Wall and the Archivists might come to find there's nowhere left for them to go but over"--