The Sea Eternal - Emery Robin - Orbit

''Goddess, tell me the story. Matheus Ceirran, commander of half the known world, is dead. For the past year, his loyal captain Anita has hunted down his assassins-that is, when she can pull herself from the bed of Altagracia Caviro Patramata, queen and oracle of the client planet of Szayet. But when Anita's quest for revenge takes her across the borders of an enigmatic neighboring empire, she uncovers a dangerous secret that could upend the fragile balance of the galaxy. Meanwhile, Ceirran's heir apparent Otâavio Julhan grows more and more powerful in the capital that Anita has left behind. Caught between home, Szayet, and a new and greater threat, Anita finds herself at the center of a war that threatens to collapse her world. The fate of empires dances on the tip of a knife, and history will be written by the victors in this sweeping tale of myth, imperial legacy, and the love affair of a lifetime''--