The Preface to Frankenstein—written by Percy, oddly enough—brings us back to the now legendary moment of inspiration that gave us Mary Shelley’s famous novel: vacationing at Lake Geneva with a circle of friends and fellow writers, the Shelleys are confined indoors due to inclement weather. Reading German horror stories by candlelight, the crew eventually settles on a competition proposed by Lord Byron. The competition is simple: who can write the best horror story? In the months and years ahead, Byron and Percy—the two literary heavyweights of the party—lose interest and take up other projects; Mary, meanwhile, sets to work on what will become Frankenstein, one of the most celebrated English novels of all time.