I sought this book out because of the author's other 3 books, which I had read and enjoyed. The storyline was basically one cliffhanger after another, as in the other books. The art of the narrow escape is evidently one of Brown's strong points. I had a couple of other books going, but put them aside until I finished this one. My only complaints were that the heroine turns into a wimp at the end and the big secret which all the genuises seek is blatantly obvious to a knowledgeable reader---yet they don't see it. Other than that, the book was enjoyable.