The Picture of Dorian Gray is a novel by Oscar Wilde that explores the themes of decadence and the fin-de-siècle. Set in late 19th-century London, the story follows the handsome and narcissistic Dorian Gray, who becomes obsessed with his own beauty and youth. He wishes that a portrait of himself would age instead of him, and as a result, he leads a life of hedonism and immorality. This classic novel delves into the dark side of human nature and the consequences of indulging in one's desires without restraint.