Echogenesis

I had a lot of gripes with the first half of the book. It read like a play. There was not much narration and the plot was advanced solely via dialogue. The characters are not fleshed out, they are just plot devices, and their copious dialogue is empty too. This section of the book is the reason I can't conscionably give it more than 3 stars overall. 
But after the first plodding, disjoined half was over, the story really came into its own and I'm glad I persevered. The plot become interesting and twisty-turny. It even managed to go out with a bang. 

I will also say the book needs an editor. Grammar errors,  discontinuities of character and plot holes abound. Fair warning if you can't get past that kind of thing.