Lunara: Kirkon Tibor and the Sephians - The Lunara Series, #8

In the eighth books of the Lunara series, Kirkon Tibor has taken the Protector and its crew into the far reaches of the Sagittarius Dwarf Galaxy. His bane will soon be revealed and his worst nightmare will come true. Desperately he attempts to keep his secret long enough to fix his mistakes. Meanwhile, Robin Acadia discovers that her life isn't quite as expected. When her estranged best friend faces grave danger, she must act to save her, all the while fighting herself and the others around her determined to use her to meet their goals.