In the latest look at Jake Gyllenhaal ‘s Nightcrawler , now set to hit theaters on October 31st , the actor is an aspiring L.A. crime reporter that takes matters into his own hands when he can’t get hired by news outlets . Nightcrawler , for which the actor lost a noticeable amount of weight ( and some blood when he broke a mirror while filming a scene ), co-stars Bill Paxton and was written and directed by Dan Gilroy . The Open Road film will get its world premiere at the Toronto Film Festival in September.