Factual error: Close up, very detailed footage of a Cobra citizens band radio is used for the scenes where dispatch radio traffic is coming over the police radio. Police dispatch does not, nor has it ever, used the Citizen's Band radio service. (00:11:25)
Factual error: When Dave shoots Justin 8 times, he empties the magazine of his semi-auto handgun, but he continues pulling the trigger, and the gun clicks several times. Semi-auto handguns do not "click" when they are empty, because it's impossible to pull the trigger. Also, the slide of Dave's handgun does not lock in the open position when the magazine is empty, as it should.
Continuity mistake: In the scene near the end of the movie where Ellen Miller asks Robert Miller to lift up his shirt, and then slaps him in the stomach with a newspaper, we see that his right shoulder suspender is properly positioned, however in the next shot from behind him his suspender over his right shoulder appears to be twisted 180 degrees. As he turns to walk into the inner bedroom the suspender is once again back to a proper fit.
Continuity mistake: Sheila is clutching the phone to her chest with both hands, since Melinda is reaching for it to delete the butt-flexing video. The door chimes and the bearded man enters the store; in the foreground Sheila is in a different position with her arms crossed, and in a third one with her arms down at the next cut. And even more noticeable, a 4th different one as she walks away, holding the phone across the chest to the opposite side of her body all of a sudden. (00:07:50)
Continuity mistake: When the mother breaks the window to enter the neighbor's house the next frame shows the glass still intact. (01:07:00)
Continuity mistake: Alexandre Lagarde puts his fork into the plate of the attractive client, much to the scorn of her husband. The morsel in close-up and the one she actually puts in her mouth are different. (00:06:10)