In season 12 of Dallas, Sue Ellen, after having been placed in a mental hopsital fro a time because of her drinking binges, and his constant cheating, she wound up divorced J.R., but he initally gained custody of little John Ross, but she swore revenge. She decided to make a movie about all the horrible things he had done to her, and began the process of hiring key personnel. It was there she met writer Don Lockwood, who agreed to write the script. Sue Ellen and Don fell in love, and after completing the movie, they got engaged. Sue Ellen showed J.R. the film with the warning that were he to ever cross her again, she would show it to the world. With that she left for England and married Don.