So... this is the third and final book in The 5th Wave series, where the earth is under the alien invasion. There's a big ass mothership in the sky and everything... 
 ALIENS, you say? 
 No, really, it's more exciting than it sounds... 
 It has been so long since I've read the first two books in the series that I decided to refresh my memory by watching the movie that was based on this book. My lord, the movie sucked. If you haven't seen it yet, do yourself a favor and read some book instead. Those would be two hours you will never get back. 
 The best thing going for this book was the action it was packed with. Once you get through a painfully slow beginning, by the way. (seriously, must have taken 80+pages) The action did keep me reading... Well, that and the desire to find out how Yancey would wrap it up. 
 The things that didn't work for me in this book: The POVs kept changing constantly. Not only that but some of them were 1st person and some were 3rd. Cassie and Evan no longer felt like main characters. With the ending the book had, I didn't feel bad for anyone, I just didn't care anymore. 
 The conclusion to the story left me with nothing but questions. Who the fuck were those aliens? Where did they come from? Why did they try to exterminate everyone? What's with the rage??? You can't just write a bunch of vague shit and end it with a cliche ending. I totally didn't see this coming, by the way. 
 The loss of the romantic element hurt this book too. (must be the romantic in me) The first two books worked because at least there was a story revolving around two main characters. This last book has minimal interaction between Evan and Cassie. But hey, there is a bunch of people slapped together into one big ball of goo, let's read their POVs. 
 I suppose if sci-fi is your thing then you might enjoy this series. Although if you are looking to read about descriptions of aliens and their reasons for coming to Earth, I'm afraid you won't find it here. You will be posed with a question "what makes us human?" repeatedly, though.