In a word: wow. This book is phenomenal. As an obsessed fan of 24, I knew I wanted to read this book, and was thrilled by how good it was.
Very simply put, it's an episode guide to Season One of the hit American real-time thriller. There are a number of these types of book around. What makes this different is that it is the only official one, and as a result, it goes way deeper than any of the others. At times, it's like an engaging reference guide to the characters and events of 24's first day, containing profiles of the major players and a lot of back story that we'll probably never see in the series. All the events are told in first person by the characters themselves, and the book is so well written that you can really believe that this is how the characters would speak and act. At times, you have to remind yourself that it's just a TV show!
As well as a detailed, up-close-and-personal retelling of the day's events, there is also a fascinating section about the infamous Operation Nightfall, which, as all fans will know, was the major trigger for the events of that longest day. Besides this, there are pictures, some subtle in-jokes, and tonnes of detail. And there's an excellent lead-in to Season Two!
Give in to the ever-ticking clock - if you want a book on 24, this is it.