Book Review - "The Kill Order" (No spoilers)

(This book review doesn't give any plot information about the book.)

I got the fourth book in a series called The Maze Runner, The Kill Order. It's a prequel to the first three, set 13 years before the first book. I got it for Christmas and started it the day after. I finished it in 3 days, that's how much it sucked me in. The entire series (The Maze Runner, The Scorch Trials, The Death Cure, The Kill Order, respectively) was written by James Dashner.

The Kill Order is the latest book. It was released this year. And that's what I'm reviewing.

A basic premise: The Earth suffered terrible sun flares a year ago. Mark and Trina survived them. But now, a virus is beginning to spread all across the eastern United States. A disease of absolute madness. And it's mutating.

Pro - The book was very intense and action-packed. Any book that's like that will suck me in.

Pro - The characters were likable. He did a good job of making me care for the good people.

Con - The author's writing style sometimes annoys me. He will often write "the boy," "the girl," etc. in reference to the person he's writing about, instead of using "he" or "she." Why there shouldn't be anything wrong with doing that, he does it all the time.

I'd recommend picking up the first book, The Maze Runner, at the library, and giving it a go.

PARENTAL INFORMATION:
I'd rate this book PG-13. It is very violent. Very violent. The entire virus part may especially affect young children. The language is okay, only uses a slight bit of the least inappropriate profanity. There is only a little drug mentioning in the book.

All relationships are appropriate.