The Awakened: Book Three is the last book in the series, kind of. I'm not going to spoil it for you, but there has to be more. In the words of Peggy Lee, "Is that all there is?"
Kael comes back, from what seemed a life ending injury, to help the empire in their struggle against the ancient demon that thinks of itself as a god. Great book and great, ending but it's not the end. There are little hints about Kael's father Adair, who seems to have been sucked into a time warp and brought to the present time. Nothing in that thread of the story is resolved however. In the end... Well read it! Very highly recommend.