4.5 stars. Okay, so it wasn't perfect; the ending was unsatisfying and anti-climactic, really makes me want to know what the sequels are about. And this book was darker than I expected. Oh, and I'm also suppose to believe an 11 year old kid and his siblings are super geniuses...yeah sure. Anyways the action was great and I really liked the writing. 
 So my stupid ex-classmate spoiled this book for me. **** you.