 Mary Shelley worked on a tale with her husband that would later evolve into "Frankenstein".Byron wrote (and quickly abandoned) a fragment of a story, "A Fragment", featuring the main character Augustus Darvell, which Polidori used later as the basis for his own tale, "The Vampyre", the first published modern vampire story in English.Polidori's conversation with Percy Bysshe Shelley on 15 June 1816, as recounted in "The Diary", is regarded as the origin or genesis of "Frankenstein".