I'm in love with the Riemann Hypothesis.
I was just starting High School and I read Derbyshire's take on it and loved it. I've read many other takes on the problem and always liked the books, in most cases because of the mathematics, in other cases because of the literary value. I was VERY disappointed by this book, the author doesn't seem to know what he is talking about and it feels as if he read a few Wikipedia articles and tried to summarize what he poorly understood. I'm afraid I will return this book in a week or so, since I still have time. (Side note: Actually, after reading many reviews I tried to cancel the order but the system wouldn't allow it for some reason. It hadn't shipped yet)
Please spare yourself the time-consuming process of ordering and returning this book and try Keith Devlín's book as an introduction instead :).