In 1816, Mary Shelley and her husband, the poet Percy Bysshe Shelley, engaged in a story-writing competition with Lord Byron. Along with Mary’s stepsister Claire and the notorious Dr. Polidori, they were a quintet holed up in the Castle of Chillon on the shores of Lake Geneva. Evenings, they took Dr. Polidori’s opium and told one another dark, mysterious tales. The result was “The Third Canto of Childe Harold,” “The Prisoner of Chillon” and “Frankenstein.” Kentucky Shakespeare is staging a reading performance, where, like that 19th century quintet, you can sit back and be horrified by the storytelling of “Frankenstein.” No opium, but light refreshments will be served in the great parlor at Locust Grove, where the Croghans lived at the same time Mary Shelley conceived her great monster.