For nearly two centuries, scholars have wondered how on earth Mary Shelley, a nineteen-year-old girl, was able to conjure one of the most frightening and enduring horror stories of Frankenstein. But with the recent discovery of Mary Shelley’s secret memoir, the truth is finally Mary Shelley didn’t just write Frankenstein, she lived it. Traveling back to that historic Geneva winter of 1816, Mary, her fiancé Percy, sisters Claire and Fanny, and the celebrated poet Lord Byron, find themselves guests of the eerie Frankenstein Estate.