A solid conclusion to the trilogy. Honestly thought this was the best book out of the three. It's totally believable how the events that happened on Earth after the second book went down, humans across the world would have no idea how to react to millions of people dying accidentally at the hands of aliens. I also enjoyed how it flashed back and forth between the current and the past with life on Esat Ekt, I'm always a sucker for flashbacks. 

The format though no longer felt like it had a purpose with our nameless friend gone. I get it for continuity and I like that the story was mainly dialogue without annoying flashy descriptions (I liked that of all three books), but it just felt unnecessary for this book.