Chapter 17
In chapter 10 Atticus and Miss Maudie Atkinson mention that "It's a sin to kill a mockingbird" and that plays into the title of the book.
In chapter 10 Atticus and Miss Maudie mention that "It is a sin to kill a mockingbird." It plays into the title of the book, and also the theme of the book.
atticus rejects sheriff tate's version of bob ewell's death
I don't have a timer or something, but my best guess would be that it happens from around 1hr 20min. to 1hr 55min. out of the films's total 2hr 10min.