Frankenstein; or, The Modern Prometheus is a novel written by British author Mary Shelley about eccentric scientist Victor Frankenstein, who creates a grotesque creature in an unorthodox scientific experiment. Shelley started writing the story when she was nineteen, and the novel was published when she was twenty-one. The first edition was published anonymously in London in 1818. Shelley's name appears on the second edition, published in France in 1823.