Continuity mistake: When the PI, Visser, shoots Marty, he is aiming the gun at a somewhat downward angle, then, for just a moment, we watch a surprised Marty stare at him. The camera cuts back to Visser, who is now holding the revolver at a much higher angle, as he contemplates shooting Marty again. The camera pulls back for a long shot and it appears Visser is no longer holding the gun on Marty. In the very next shot, he is again pointing the gun at Marty. Also the blood on Marty's shirt increases substantially in the few seconds before Visser leaves.Without a DVR, these details are very difficult to see (except the gun angle).