I give this novel 4.5 stars!
Having read other Crichton novels, I feel this isn't his strongest, but it is still quite enjoyable. Crichton does a good job of blending real science with plausible extrapolated hypotheticals and a well-researched past to create a thrilling action-packed novel.
A fellow student had loaned me this book in college. I started reading it, but due to other time restraints, I had to return it without finishing it. Not remembering the title or author, I had been looking for it since then and was glad to finally find it. :-)