This is Metropolis, the novel that the film's screenwriter -- Thea von Harbou, who was director Fritz Lang's wife, and a collaborator in the creation of the film -- this is the novel that Harbou wrote from her own notes. It contains bits of the story that got lost on the cutting-room floor; in a very real way it is the only way to understand the film.Thea Gabriele von Harbou (27 December 1888 - 1 July 1954) was a German screenwriter, novelist, film director, and actress. She is especially known as the screenwriter of the science fiction film classic Metropolis and the story on which it was based. Harbou collaborated as a screenwriter with film director Fritz Lang, her husband, during the period of transition from silent to sound films.