Short review because I'm still not entirely sure what I think of this novel. I liked it, yes, but why? 
 I was apprehensive at first seeing this book's content was fairly outside the zone of the other books I've read by Snyder. She did not, however, disappoint. The world building here is what I find most incredibly interesting and can't help but wonder what occured in the past to set up events like they are now. I think learning about the world of Inside and its inhabitants was my favourite part of the book. 
 The characters were set up fairly well - Trella most especially of course. Though it did feel like non-majors were lacking, with their characters being built around one trait of theirs, rather than a complete package. 
 There were also some things that felt too technologically convienent or didn't make sense scientifically (view spoiler)[I'm pretty sure it's not physically possible for Cogon and Trella to have looked at space and been out next to space and for Cogon to have gotten sucked away and Trella to not have also died. Also, that's a lot of ands. (hide spoiler)]. 
 I'm not sure where Snyder is intending to take the series, but I am interested in finding out.