War of Torment - The Droseran Saga, #4

The time for peace is over-now he demands vengeance They followed him back. Against his will, against his intention. Now enemies threaten from every direction. Amidst it all Marco Dusan struggles to lead his people, to help them survive, even mayhap win the war. He will take any advantage to even the odds. But only after tragedy strikes does he learn just how much he's willing to sacrifice. He's not alone.
Droserans fight as one, united against the offworlders-Symmachians who covet their planet. With the aid of unexpected allies, the Droserans battle on longer than anyone could have anticipated. Yet they cannot win. And the Faa'Cris, those supernatural warriors, fair of face and fierce of mien, do nothing. But not all have turned their backs. After a bitter year of pain and loss, Kersei Dragoumis navigates a new heritage, ever intent on defending her people.
Like her, light-years away from the Quadrants and even farther from the girl she thought she was, Eija Zacdari must come to terms with a new role. Or, rather, with an ancient one. And her success or failure may determine back in the Quadrants who lives and who dies. In the end, Marco will have vengeance for the torment brought by this war. No matter the price. Not even if the price is his soul.