I don't know about the book, but the movie seemed to be alright. Girl in the movie was harassed by her father, but there weren't graphic scenes if I remember correctly.
I never read King's books. I was not aware that he writes nonfiction.
The scene was left out of the movie. King was an English teacher, so he is a master of the English language. And he is right about adverbs.
Compare the following sentences:
I saw the man. (normal sentence, no adverbs)
I saw the man yesterday in the house. (adverb of time and a prepositional phrase as adverb of place)
The second sentence has four more words.