Incorrect trivia statement
Someone had put in the trivia portion of this film, that the film took liberties as he did not kill his step mother in real life... this is completely false. I have studied this case (and many others) since I was a teenager, and the reason he was arrested and sent away was because he had killed his stepmother. Anyone with a brain in their head can look him up and see that. There are tons of books on the case that state the same thing.
The only liberty I feel it took was when it showed him when he got out and his sister flipped and thought he was trying to poison her daughter. Nothing I read to date ever stated that this ever occured.