I gotta say for Dean Koontz, I'm a little disappointed. I do believe this is one of his earlier titles though.
It starts off kind of slow. You know something is happening but it's just taking so long to develop. Then when it happens, its great for about 30 pages or so, then it just drops off again. I felt like the book just ended so abruptly without really pulling everything together. I mean you know what happens and the climax is over, but there isn't really any closure. A fine read if you are a true Dean Koontz fan, otherwise stick to some of his more recent stuff.