Jacqueline’s sister Hilary and her brother Piers later wrote a book about her called "A Genius in the Family". This was made into a film "Hilary and Jackie". In this film it was claimed that Jacqueline had had an affair with Hilary’s husband. They said that this had helped her at the time she was having a nervous breakdown. Hilary’s daughter later criticized the story and said that her father had made Jacqueline have sex with him.