This is book 4 in the series The Two Moons of Rehnor. Senya’s grandfathers are dead and the time has come for him to return home and fulfill his destiny. Captain Katie is off on her final cruise for the Allied Spaceforce, taking the Discovery across the galaxy and back one last time. She has several challenges to meet along the way but none more difficult than the trials she will face when she arrives at the Palace of Mishnah, in the newly created Empire of Rehnor.
Get it here: http://www.amazon.com/dp/B00819YBOI