Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Book is lacking.

I have read the previous four books in the series. Greeno is a long winded author with scattered plots. The plot in this fifth book no long was realistic nor well planned. It seemed to me that the author was merely trying to write another book in the series instead of having planned anything. In fact, I was not able to finish the book. I will not spend any more time or money on a Gayle Greeno book.