sentences:  Merivel and Katherine travel to London to live with Katherine's mother, in London, which is enduring the Great Plague.During this time, Merivel regains some of his fortune by selling John Pearce's recipe for a plague restorative, and reunites with Elias Finn, who has fallen out of favor with the King.Unfortunately, Katherine dies in childbirth, but Merivel's surgical skills are such that he is able to save their baby, whom he names Margaret.