Darth Vader ‘Star Wars’ script reveals how huge secret was preserved

A script for “Star Wars: Episode V — The Empire Strikes Back” reveals how a pivotal plot twist in the movie franchise was considered to be such a secret that it was not reflected in the lines provided to actors.A script for “Star Wars: Episode V — The Empire Strikes Back” reveals how a pivotal plot twist in the movie franchise was considered to be such a secret that it was not reflected in the lines provided to actors.