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Overseer (The Horn, #3)
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Those who hold the secrets of the Fortresses can remake the world...
A new player has arrived at Horn Keep, and it's up to Amal to decide whether he's the key to keeping her people safe, or the threat they've feared the most. Aulis is, like Dalyan, a version of the same long-dead engineer, a Founder of the Salonen Fortress. That alone should make him worth keeping alive.
But he's served the Cince Empire for almost two decades, the very people who want to steal Salonen Fortress. Now Amal is ...