Padlocked (1926) - a movie.
Edith is the daughter of Henry Gilbert, a Christian devoted to moral reform but hypocritically infatuated with his assistant, Belle Galloway. Her life is strictly regulated - she writes her thoughts in a padlocked diary, and keeps her possessions in a "hopeless chest". On her 17th birthday, she and her mother throw a raucous party on a day when her father is away giving a speech on moral virtue. He comes home early and finds a dress-up party in full swing. Furious, he tells his wife that she is...