The Coldest War - Ian Tregillis
Finished reading this one last night, the writing style pulls you right in and and takes you on a ride that doesn't seem to end.... until you realize the end is really THE END.
(show spoiler)
I really enjoyed this book and wish I didn't wait so long to read this one after I read Bitter Seeds. It's not a deal breaker if you didn't read the first one, but you get a bigger understanding of what's going on.
Now, onto Necessary Evil! I wasn't going to read that one right away, but I gotta find out how this ends!