Denton Vanda Denton 
Vinctalin Legacy: Retaliation, Book 5 Alliances [EPUB ebook] 

With their home world taken, their people being hunted down and a massive new challenge soon to take place, the Advanced Humans are close to defeat. But an injection of the fighting spirit of the primitives of Earth reignites their zeal. While these courageous new combatants join forces with the Vinctalin’s only viable enemy, the peace-loving psychiatrist Dr. Alexander Byefield is left with what should be the positive task of rebuilding society on Earth. They are told that the Vinctalin don’t return to their harvested worlds, so how could they have guessed at the horrific fate awaiting Alex and their vulnerable partners?