Empire's End (Sten #8)

The Empire is in chaos. The once-great Imperial Navy has been shattered in battle and lies burning in space, riven by a civil war that threatens to engulf humanity’s future. For the revered Eternal Emperor is not the man his subjects thought him to be—and may not even be human at all. And it is Sten—Imperial bodyguard, spy, assassin, renegade—who now leads humanity’s fight for survival. Taking command of the last rebel fleet, he sets out on a desperate quest to seek and destroy the dark source of his former master’s power. Denounced as a traitor, hunted by forces loyal to the Emperor, Sten must risk everything to annihilate the Empire he vowed to protect.