Trivia: Stay for the outtakes after the film.
Trivia: This was the final movie starring Robin Williams to be released during his lifetime.
Trivia: The original black Jaguar XJ6 Series III car, as used in the TV series of the same name, makes a cameo appearance in the background of the scene where McCall tortures the corrupt cop.
Trivia: When Ben gets shot during the video game he is playing, he lets out a Wilhelm scream.
Trivia: Greta handed Clinton (in bed) a mug and after he took a sip, Clinton asked, "What is this - just boiled whiskey?" Greta smiled and replied, "Yeah, pretty much." Greta most likely made Clinton a "Hot Toddy", which is a beverage typically comprised of whiskey (or brandy or rum), hot water, lemon juice, and honey. Hot toddy is used to help alleviate the symptoms of a cold/flu or served as a nightcap to help facilitate sleep (although it may actually interfere with getting quality sleep). (00:51:30)
Trivia: Grumpy Cat (AKA, "Tardar Sauce") dies in 2019 at age 7 (4/04/12 - 5/14/19) due to urinary tract infection complications. Her small size (a little over 4#) is due to a form of dwarfism and her grumpy look is attributed to an underbite. Although not revealed, it is estimated that Grumpy Cat earns millions of dollars (perhaps as high as $100 million) during her short life as an internet sensation and "movie star."
Trivia: After posting Obama signs in yards, Mason Sr got into his car and told Mason and Samantha, "Look, I'm a patriot, all right?" He drives away but the camera stays fixed on the now-visible Jeep parked on the opposite side of the street. This appears to be showing another kind of "Patriot" [Jeep Patriot], but it is actually a Liberty. (01:02:59)
Trivia: Katie Holmes plays Brenton Thwaites' mother in the film, even though in real life she's only 10 years his senior.
Trivia: Originally intended for theatrical release, this film ultimately had to be released through streaming after the North Korean government threatened to retaliate against the United States. A cyber crimes group allegedly tied to North Korea also hacked Sony's emails and made threats against theaters that had planned to show the film.
Trivia: Part of the inspiration for the film came from a friend of writer/director Jennifer Kent. Her friend, a single mother, had a young son who like many children was terrified of non-existent "monsters" he thought were lurking in his home. Kent then had the idea to turn this into a film. What if a child was terrified of monsters lurking in their closet, under their beds, etc... except they were real?
Trivia: Funded mainly through the use of online crowd-funding.
Trivia: The fancy Mercedes is not "the only one in America" (as John Madec said on the movie) but the only one in the world. The car was borrowed for the purpose of the movie by one of the owners of the Formula One team McLaren and was shipped by air from Germany. Hence German licence plates often seen during the film.
Trivia: Paul Jesson and Timothy Spall play father and son in this film. In real life, Jesson is only ten years older than Spall.