"London, 1814: Mary Godwin and her stepsister Jane Clairmont, both sixteen, possess quick minds bolstered by an unconventional upbringing, and have little regard for the rules that other young ladies follow. Mary, whose mother famously advocated for women's rights, rejects the two paths that seem open to her-that of an assistant in her father's bookshop, or an ordinary wife. Though quieter and more reserved than the boisterous Jane, Mary's imagination...