Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Secret of the Sphinx should stay a secret

To say that I am disappointed with the "Secret of the Sphinx" is an understatement. As I made my way through the book I wondered if this was indeed the same author who gave us "Philospoher's Stone" and "Dinosaur Eggs". Indy's travels to India and Egypt were quite underdeveloped (especially when compared to his action-packed stay in China) resulting in a storyline that just did not "flow" naturally. Don't even get me started on that completely misplaced time-travel bit at the end... The book also presented a tired, older and less-spirited Indy (who apparently had never been married before (which is false)) which was a terrible departure from the adventurous, sometimes maladroit, professor we have come to know. It's a shame that McCoy's last installment was so poor - it reminded me a little of Caidin's attempts at the IJ series a few years ago. What ever happened to MacGregor anyway?