Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Falls Flat!

Without restating what others have said, I wanted to echo my disappointment with this book. I too have been a Robin Cook fan for many years, but the plot, characters and abrupt ending left me wondering if I'll ever pick up another of his books again. The stilted writing and shallow characters might have been understandable at the beginning of Dr. Cook's writing career, but at this stage??? Very poor writing, no conclusion ... just an end making me feel that Cook just got sick of the story himself and decided to simply stop writing one day.