Mary loves stories, but the stories in her daydreams are far more thrilling than those in any book. After a troubled childhood, eighteen-year-old Mary runs away to Switzerland with the famous poet Percy Bysse Shelley, her step-sister in tow. One dark and stormy night at his house by the lake, they huddle around the fire, telling ghost stories. But Mary can imagine better than those! After learning about electricity that can make dead frogs twitch, she has a nightmare that triggers the birth of one of the greatest scary stories of all time: ‘Frankenstein’.