Sammo

Plot hole: The villain's plan can work and fool the judiciary system because of extraordinary coincidences out of his control. He needs to steal the gun of his wife's lover in broad daylight without employing any modicum of stealth; he needs said lover to be the particular negotiator assigned to that case. He then needs the two agents standing by the door to be unable to hear any part of the confession he spews out, and to be absolutely sure that the detective has no recording device or radio contact throughout the ordeal. Not just that, but the spry septuagenarian also switches guns with cat-like ability - Nunally left his gun by the open door, where the other two agents are waiting. So the other two policemen had to be deaf and blind for his plan to work. He does not even have any time to switch guns with Nunally from our perspective as viewers; for the tiny five seconds when he is off camera and out of Nunally's direct eyesight, he is taunting him while supposedly moving around the large entrance to grab the gun.

Sammo ★

Plot hole: According to the deposition of the policeman, the police were on the premises at exactly 5:12 PM. Considering that Lt. Nunally started his shift only at 6 PM (as per Crawford's phone call, even if by any logic it was the kind of fact a meticulous planner like him, with seemingly unlimited access to intelligence, would have to know already), Crawford concocted his master plan that hinged on Nunally being called up for the situation at a time when he was, in fact, not on duty. (00:45:00)

Sammo ★