Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dissapointing

I was very interested in this book because of the posibilty of learning about famous cases and how authorities deal with the offenders.However i was very disspointed with the author.First the author just "talks too much".By this, i mean that he just talks and talks endlessly about cases without really telling us the "science " behind it.In other words i was interested in the problems faced by the police, how to deal with them,going deep into the mind of the offender.BUt sometimes the author just talks about things that were not really that important.I found myself trying to finish the book quickly, especially the parts relating to the young woman who was abducted in the army base which it seemed to me, the author was more interested in giving us his opinion that actual science.Again, very dissapointing work.