Title: The case of the perilous palace
Description: Ada and Mary take on the case of young Princess Alexandrina Victoria's missing diary.
Subjects: Lost and found possessions, Lost articles, Diaries, Juvenile fiction, Fiction, Mystery and detective stories, Childhood and youth, History, Children's fiction, Great britain, history, fiction
Places: Great Britain, London (England)
People: Ada King Lovelace Countess of (1815-1852), Mary Wollstonecraft Shelley (1797-1851), Victoria Queen of Great Britain (1819-1901)
Time periods: 1800-1837, 19th century