An 18th-century aristocrat sprints from her family estate in a nightgown to elope, sneaks into the women-only bathhouses of the Ottoman Empire, wages a public feud with Alexander Pope, and, almost in passing, introduces a life-saving medical procedure to Western medicine 75 years before the vaccine. Every word of it is true. Lady Mary Wortley Montagu, born in 1689 into a world that wanted her quiet and ornamental, refused the terms completely.

This episode follows the girl who secretly taught herself Latin eight hours a day in her father’s library, the coldly strategic elopement that read more like a contract negotiation than a romance, and the discovery she made in a Constantinople bathhouse: Turkish women safely inoculating against smallpox while Europe’s experts scoffed. It ends with the fight to get variolation accepted in England, the daughter who burned her diary to protect the family’s reputation, and the single quiet monument that records what she did.

• Eight secret hours a day: reverse-engineering a male education from a Latin grammar and a dictionary
• The pragmatic elopement: “I can esteem, I can be a friend, but I don’t know whether I can love”
• The bathhouse discovery: smallpox inoculation learned from the women Europe’s doctors ignored
• Proving it on her own children: the demonstration that brought variolation to England
• A legacy filtered by everyone else: Pope’s venom, the burned diary, and the Sun Monument’s nine words