Continuity mistake: At the start of the film, Mahoney is wearing a white shirt with badges on it from the company he works for. When he's being interrogated by Sgt. Reed the shirt remains the same until the last part of the scene. The camera stays on Mahoney and we can see that the badges on the shirt are gone. If you look closely, you will notice that he is even wearing a completely different white shirt, which now looks more scruffy and creased.
Other mistake: When Hooks runs over Copeland's toes with the squad car, you can clearly see that he is standing a good distance away from the car. I'd say that he would have had to have feet half a meter long for that be possible. The car also bumps up and down to signify that his feet have been run over. The car bumps too late though, and the front wheels have well passed Copeland before he moves to show pain.
Continuity mistake: When Harris is walking through the cadet's barracks as they're sleeping, he walks into Jones' and Barbara's room and sees Jones pretending to play an arcade game. In a close up shot of Harris, he is seen with a white cloth in his right hand. In the next shot, the cloth is now in his left hand.
Revealing mistake: When Mahoney first meets Larvelle Jones at the police precinct, Jones demonstrates his vocal imitation skills by simulating machine gun fire. In the shot with the unwitting crowd, look at the police man to the far left talking to the lady with the hat. That officer ducks down a split second before Jones lets loose with his gunfire sound.
Continuity mistake: When Mahoney first meets Jonsey, his (Jones') hands are cuffed behind him. Then he demonstrates why he's there in the station. His left hand has the cuff on. Then it's behind him again. Then, as he goes to mime playing a harmonica after Mahoney is led away, he rubs his right wrist as if it were cuffed the whole time.
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