The official teaser trailer for upcoming American crime-thriller Nightcrawler has just been released by Open Road Films. It features Jake Gyllenhaal as protagonist Lou, a driven young man who stumbles upon the underground world of freelance crime journalism in Los Angeles. The film has been written and directed by Dan Gilroy, who makes his directorial debut with Nightcrawler, with Jake Gyllenhaal also co-producing. The film is due to hit American movie theaters on October 17. Stay tuned in the coming months for a full-length trailer.