Kaufman and Kristoff have blown me away yet again with Gemina. I loved every minute of this amazing book and this story just keeps getting better. Just like with Illuminae, you've got two main characters that come together for a common cause - to fight off the BeiTech bad guys. At first, I was a little sad that this book wouldn't be about the two main characters from the first book, but that was short-lived. Hanna and Nik were just plain awesome, especially Hanna, and I honestly couldn't get enough of them. 
 You want to talk about kickass female protagonists?! That is Hanna Donnelly. From start to finish, this girl did not disappoint. She knows how to fight, is a quick-thinker, and is caring and compassionate. There were so many moments that stood out to me with Hanna that has turned her into one of my favorite female characters. Nik isn't bad either. He's not as prominent as Hanna, but his moments were good, too. His affection toward Hanna was so cute and I really liked seeing how their relationship developed. Let me just say one word...sugar. WOW! 
 Also, one of my favorite lines ever: 
 "You might get only one shot. So shoot. You know who said that? Hanna Fucking Donnelly. That's who." 
 Dayam!!!! 
 The plot itself kept me on my toes and glued to the pages. There were so many times I was upset that I had to put the book done, you know of because LIFE, and I'd get so excited once I was able to pick it back up again. Those 600 pages flew by! Granted, a lot of those pages had illustrations and such on them, but still. The book is filled with a lot of predictable moments, but also a lot of surprises, so it's really a good mix of everything you would hope for in a great book. There's definitely a lot of technical and scientific stuff, a lot of theories that are present in the world today and some that the authors embellished on, but they did a great job explaining things. 
 This series has yet to disappoint me, and I doubt the third and last book will. In fact, I'm positive it will amaze me just as much as its predecessors, leading this to be one of my all-time favorite series ever! The Illuminae Files is one you really don't want to miss out on. If for nothing else, you need to read this book for the way that they present it. The reading style is so fantastic and unique and the illustrations and graphics are on point. I became so engrossed in this sci-fi world and after I didn't want to leave it. It's really unlike anything else I've ever read and I was greatly amused and entertained the whole time I was reading this. Gemina was one of my most anticipated books this year and I'll be waiting very impatiently for the third book next year.