What should you expect from Gemina? A drug cartel, some badass aliens, and crazy space stations. Gemina was one wild ride. This review is going to have some basic info about what you should expect from the world of Gemina. Don't worry, there are not going to be any spoilers. 
 First, let's address the fact that our main characters aren't Ezra and Kady. I was excited when I first heard about this. Seeing this world from a different point of view was refreshing, and it took me awhile to warm up to Kady in the first book. Our new characters were just as fun, just as crazy, and had just as much funny banter as the previous book. I got a better sense with these characters and had a deeper connection with them. For those who want to know if Kady and Ezra are in this book, they are, but not much because the point is getting to know these new characters. If you like Kady and Ezra, you will love Hanna and Nik. 
 Hanna made this book for me. I loved her from the start. She's smart, funny, and cool under pressure. I don't want to say much, but I have to say that it surprised me how much I fell in love with her by the end of this book. 
 Nik. Oh, Nik. This going to be so vague because I want you to get to know Nik yourself. If I had to compare him to anyone, I would say he is a little like Kaz from Six of Crows. There are no words I can write that can perfectly describe Nik, that is how amazing he is. 
 To give a tiny hint of the plot, there are aliens. Not nice aliens. Not chill aliens. Scare that crap out of me aliens. I think I am going to have nightmares. That's all I am going to say about that. One tip: be prepared. 
 There is a lot more science and outlook for this extended world. Plot twist after plot twist. There are more characters that you fall in love with and more characters that you hate. Let's just say that you're not going to know what's coming until it hits you in the face. If you haven't picked up Illuminae: 1. Why are you reading this review? 2. Go read it. For those of you who are waiting for October 18th, you won't be disappointed. 
 I recommend this book to sci-fi lovers, those of us that dreamed that we could be astronauts, actual astronauts, and the aliens that were mentioned in this book.