I really enjoyed the first half of the book, especially as the story concentrated on Jin and Eryn, but from halfway on I was less convinced. I had to re-read several sections because I couldn’t make sense of the ‘plan’, he spent dozen of pages reiterating what a bad idea it was, but still had them jump into it with both feet.
Unfortunately the rest of the story degenerated into more of a comic book than a SciFi novel. There were a few interesting twists, but I got the strong impression they were more about the author showing how clever he was, rather than trying to add to the story. Perhaps he sees himself writing the script for a Marvel/DC movie. Overall I found the second half of the book more irritating than interesting.
Quite early in the book I thought this might be my first five star rating of the year, by the end I was being generous to give three.