Imprint of Defiance (Birth of the Rim Book 4)

A newly minted Ensign. A new mission. Suddenly she is fighting for the life of her Empire. Yet those who hate her would destroy her and let the Empire fall rather than help her save it. The survival of her civilization has become tied to her own - and her own survival requires her to take down an Emperor!

This is a standalone book in the Birth of the Rim series, which can be read in any order.