Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Worst book I have ever read

First off, I had no previous knowledge of this crime, I decided to read this book because the back cover promised a "shocking diary" kept by Bob Coulsons adoptive mother amongst other things.Well guess what? The diary is mentioned in maybe 2 paragraphs in the whole book. You don't get any insight into the relationships of these people. You only get a quick rundown of the parents. There was a few minor "scandalous" behaviors, like the two sisters getting pregnant before marriage, but other than that, nothing.There was no in depth bio about who Bob Coulson was, nothing about his past, except that he was adopted at a young age. The only reason he killed his family was for the inheritance. I have no doubt that he did this awful crime but i think there was a lot more behind it. Why couldn't the author have dug a little deeper?The book was written horribly, at an extremely fast pace, and there were no "shocking photos".