The first few episodes of the TV show intrigued me, so I hunted down the book and read it in a few hours. It's enjoyable and the resolution of the "mystery" is fun. The writing itself isn't very strong though, which becomes more apparent in the next two books when you don't have the desire to find out what exactly is going on to keep driving you along from page to page. 
 I'm not sure I could recommend this book to others, and if I did I'd probably tell them not to bother with the next two, but I did enjoy it. 
 P.S. - It is better than the TV show, and stays more consistent to itself. Some of the plot holes I've spotted in the show do not appear in the novel.