"Headlong" is a novel written by Michael Frayn, published in 1999. The story revolves around a man named Martin Lynch, who becomes obsessed with a painting by the famous artist Pablo Picasso. As he delves deeper into the art world, he encounters various characters and experiences that challenge his perceptions of love, art, and reality. The narrative blends elements of comedy and drama, exploring themes of obsession and the nature of artistic creation. Through Martin's journey, the novel examines how art can influence personal relationships and the lengths one might go to in pursuit of beauty and meaning.