I'm of two minds on the conclusion of this trilogy. On one side, I'm impressed with the scope and ambition, but the other side has me wishing I liked the characters more. Plus, there was the whole thing about keeping faux science firmly to the vampires, which I enjoyed, but the authors decided to throw religion into it anyway. The ending was kind of satisfying as a brute force solution, but in the end I doubted there was any other way. The way the novels were set up pointed to it pretty clearly. 
 I intellectually enjoyed the novel, but I was only lukewarm in my gut. Eph started to rub me the wrong way. It was rather funny that I rooted for his end.