The main focus of the book is the trial of Tom Robinson, who was accused of raping Bob Ewell's daughter. Bob is considered white trash so the allegations are questionable. Atticus Finch defends Tom, and even proves that he is not capable of committing such a due to his handicap, but Tom is still convicted because he is black.
As the story moves on Tom is killed when he tries to escape prison. Bob Ewell vows revenge on Atticus for making a fool of him during the trial, he later proves his vow when he tries to murder Atticus' children Jem and Scout (who narrates the story), but he fails when Jem sends him flying. They take off, and Boo Radley kills Bob with a kitchen knife.
I thought this book was written quite well but it could have used some improvement. I thought that the writing needed some more excitement, only in a few part of the book there is excitement, but at the beginning there is enough to keep the reader interested. I thought the plot was well chosen because it shows that back in that time period it didn't matter whether or not you were innocent it was all about color.
Overall I thought of this book to be decent. I'm not an avid reader so it didn't appeal much to me but as I read further it seemed to prevail. I would only recommend this to someone who enjoys reading, because I found it took to long to get to the good parts.