So...Zero Sum the 4th book of the series and if I'm honest, my least favorite of the series. It doesn't mean it's bad, no, it's cool and a must read if you already started the series, because oh man, what's coming looks promising ;).
Then, what didn't i like? Mostly the fact that there's too many things going on at the same time and i didn't expect the incorporation of aliens and other stuff that, to me, didn't feel organic to the whole supernatural universe revolved around Alexi. I guess i'd have accepted it more had it been like the druids and shapeshifters in book 2. Also the first part of the book is overcharged with action and there's no rest for Alexi nor for you as a reader, giving me anxious feelings just by reading the whole thing, haha. Some scenarios were hard to follow and in addition with the discovery of the men in black, new characters, etc. it felt convoluted and scattered with no clear path. It got better in the end, and there's a chapter that i loved due to the amazing descriptions of magical realms that reminded me why i fell in love with this series. That's why i'm giving this a 4-star rate. Also i appreciate the inclusion of characters like Angkor, it's refreshing to see a character like him where his identity isn't such a Big Deal(tm), while i have mixed feelings about the developing relationship he has with Alexi since to me it felt forced in the sense that we didn't get to see the progression of Alexi's feelings but sudenly they just were there (idk, maybe it's just me and that just read a lot of romance so i have some expectations whenever there's some romantic side on a story), i'm just glad Angkor is a big part of the mission to heal GOD.
I'm rambling at this point xD, i understand now why this book needed to be written before Cold Cell, i understand why it must have been difficult to write, i wish the beginning were quieter. Nevertheless I can't wait to read the next book.