In season 4, episode 7 of , titled "The Hereditary Principle," Princess Margaret discovers a chilling secret about her own lineage while struggling with her declining role in the royal family and her mental health. The Story of "The Hereditary Principle"
: The episode concludes with Margaret coming to terms with her place in the hierarchy, while the show provides a "fictional dramatization" of this real-life royal scandal, which historical accounts suggest was handled with similar secrecy by the Bowes-Lyon family . The Crown Discussion Thread - S04E07 : r/TheCrownNetflix The Crown s04e07
: When Margaret confronts the Queen Mother about the family’s decision to hide them, she is told that the discovery of "imbecility" in the bloodline would have threatened the legitimacy of the Crown and the purity of the family's image. In season 4, episode 7 of , titled