A personal perspective
I wrote this story about an undercover detective named Karl who roams restlessly through a big city at night. As I kept writing, Karl began to take on a life of his own, and the story gradually became more mysterious and dreamlike. I wrote through the entire night, and by the time the sun came up, the story was finished. I went straight to bed—and dreamed about making the film. In a way, the film began with that dream.