Attention to all fans of Gone and The Maze Runner out there; this book is for you. 
 Maybe it's just me, but I found the writing style really similar to those two series. It's a YA apocalyptic story, mixed with a bit of horror and dark scenes. 
 The concept is really interesting; adults around the world are killed by animals behaving like crazy beasts or by other humans in most populated areas. By animals, I don't mean tigers, and bears and other predators; I mean all kind of them including house pets, insects, birds... all of them just go crazy from one moment to the next. It is gruesome. In the course of a few hours, teenagers and kids are left to fend for themselves. 
 The story is action packed, you can barely catch your breath between one action scene and the next, the pace is really fast. 
 So, why the 3 stars? The characters. I just couldn't relate to them at all, and in those dark scenes, I didn't even feel sad. At first I didn't know exactly why I disliked them, but after sleeping on it I came to two explanations: 
 1.	They are cliche: 
 a.	The male main character is the typical good, responsible and perfect boy who doesn't want to be the leader but somehow they all flock around him with puppy eyes looking for his guidance. Why exactly? I don't know... it just happens without reason. He feels responsible for everyone, especially the female main character, and has a high sense of morality 
 b.	The female main character is also the typical perfect girl, pretty, cheerleader who before the book didn't have a clue who the male main character but falls for him after apocalyptic events. Also, she is also perfect, cares for everyone and acts mature and responsible 
 c.	The male main character's best friend who acts as a side kick 
 d.	The kickass and cold female who comes from a military family 
 e.	The tough friend 
 f.	The weird goth girl 
 g.	A bunch of other kids you never get to know really well 
 2.	The pacing: It is so fast that we don't get to know the characters and care for them properly 
 Either way, I'll continue with the series, the story IS interesting and maybe in the next books the characters will become a bit more complex.