

To promote Nightcrawler, Open Road Films used viral marketing strategies, including a fictional video résumé on Craigslist and fake social media profiles for Lou. Filming took place over the course of four weeks and was a challenging process that included over 80 locations. Gyllenhaal played a pivotal role in the film's production, from choosing members of the crew to watching audition tapes. He wrote Lou as an antihero, based on the ideas of unemployment and capitalism.

Gilroy originally wanted to make a film about the life of American photographer Weegee but switched focus after discovering the unique narrative possibilities surrounding the stringer profession. A common theme in the film is the symbiotic relationship between unethical journalism and consumer demand. The film also stars Rene Russo, Riz Ahmed, and Bill Paxton. Nightcrawler is a 2014 American neo-noir psychological thriller film directed and written by Dan Gilroy in his directorial debut and co-produced by and starring Jake Gyllenhaal as Louis "Lou" Bloom, a stringer who records violent events late at night in Los Angeles and sells the footage to a local television news station.
