Jack in the Hat. The person in the car at the end of the Gangster Legend film is Jack the Hat, the one who was stabbed to death. He still has his hat in the car, with thinning hair and a bumpy face. "Underworld" is written and directed by Brian Helgeland, the former Oscar-winning screenwriter. It tells the story of two brothers who relied on each other and gradually became the kings of British gang history. In the end, the two brothers parted ways.