In the summer of 1816, aged nineteen, Mary Shelley wrote Frankenstein. A pioneering work of science fiction, it captured the popular imagination from the start. The daughter of radical philosopher William Godwin and pioneering feminist Mary Wollstonecraft, Mary Shelley lived an unconventional life marred by tragedy. At sixteen she scandalised England by eloping with her married lover, the poet Percy Bysshe Shelley, but was widowed after only a few years when he drowned. She survived him by nearly thirty years, supporting herself and their one surviving son largely by the pen.