I was disappointed with this title as it tried hard, but didn't quite make it in my view. I thought it was well written however I found some of the fundamental story-line concepts bordering on the silly. For example, Chyna Shepard stowing away aboard the brutal killer's motor-home (twice) and then attempting to shoot the culprit with an unloaded revolver when she was apparently experienced with firearms etc. etc. Lame! I expected more.
This book is one long chase scene and manages to bore despite the villain's gory crimes. The narration is superb, and I hope we hear more from her. The author should slow down!
Because the entire book is jut one plot line (except for some childhood flashbacks), I found it got tedius. It is a good book, and with great suspense, but it lacks the depth of Odd Thomas, Forever Odd, The Face, or Dragon Tears. Like others have said, if you like Koontz, you should read it, but I can't say its a "must read", in general. The 4 I mentioned above I consider "must reads". I'm going on to some of his others now...can't wait.
I couldn't believe that the only comments about the narrator were positive ones. I didn't care for the narration of this book. All of the other Koontz books I've listened to so far have had top notch narrators. I've listened to The Face, Odd Thomas, Forever Odd, Brother Odd, Life Expectancy, The Husband, and Dark Rivers of the Heart so far. Intensity's plot doesn't seem up to snuff compared to his other books I've listened to so far either, but then again, I haven't finished it yet.