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)
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.