"Nightcrawler" received widespread critical acclaim upon its release, with many praising the film's originality, performances, and thought-provoking themes. The film holds a 93% approval rating on Rotten Tomatoes, with many critics praising Gyllenhaal's performance and the film's sharp social commentary.

The film features outstanding performances from its cast, particularly Jake Gyllenhaal, who brings a captivating intensity to his portrayal of Lou Bloom. Rene Russo also shines as Nina Romina, the director of the news station, who becomes increasingly conflicted about the ethics of her job.

The movie begins with Lou, a struggling man who works at a salvage yard, witnessing a car crash and seeing the footage of the accident on the news. This sparks his interest in becoming a nightcrawler, someone who captures footage of accidents and crimes for local news stations. He starts his journey by purchasing a police scanner and a van equipped with camera gear.