Where was Uncle Al??
As I was watching the movie, having read the book, I kept think something was wrong. They took out a main character!! For all the non-reader, Uncle Al was the owner of the circus, not August. He was cruel and ordered the red-lighting. August was only the head animal trainer. I guess if they were going to make a 'hollywood' movie, they need Marlena to be married to the boss, to make it scandelous.
Another big let down was Jacob and Marlena started their affair while they were still at the circus. She got pregnant and the baby had red hair, like Jacob, so we knew that August wasn't the father. In the movie, they implied they got together after August died.