Factual error: After escaping the hospital, Harvey Dent wears the same charred suit he was wearing when he was brought to the hospital. That suit would not have been neatly taken off and left intact. It would have been cut off with shears so as not to accidentally remove any damaged skin and flesh when pulling the pants and shirt off. The blazer might still be intact but certainly not the pants and shirt.
Visible crew/equipment: During Batman's interrogation of the Joker, when he picks him up and slams him against the wall, for a very brief moment you can see the camera and the cameraman in the reflection of the mirror on the right. (01:29:10)
Continuity mistake: During the interrogation scene, when Batman beats up Joker, Joker's hands are holding Batman's forearms upside down (from underneath). When the frame changes his hands are now on top of Batman's forearms, then it cuts back and his hands are under again. (01:28:00 - 01:29:00)
Continuity mistake: In the chasing scene where the Peterbilt truck hits a swat van, the truck's right front light is damaged. In the next scene, the light seems to be undamaged and then, damaged again. (01:14:00)
Continuity mistake: When Joker puts the smoke bomb inside the bank manager's mouth, watch a green sign behind lying on the floor, with a tree painted on it. It has a stick on top which moves around between shots with no one touching it. (00:05:50)
Visible crew/equipment: In opening scene of the aerial view of the building adjacent to the bank, you can see the reflection of the filming helicopter on the left side of the building. (00:01:10)
Continuity mistake: In the interrogation scene, when Joker sits on the floor, in one shot there's cracks all over the wall, but in the next one there is only one crack, and then again it is full of cracks. (01:29:20)
Continuity mistake: During the bank scene, the Joker shoots the bus driver and he falls dead in front of the bus. As the Joker approaches the Bank manager to put the gas can in his mouth, you can still see the body. But after he removes his mask and walks toward the bus, the driver's body is gone. (00:05:30)
Continuity mistake: When Dent dies, his right arm's position keeps changing between shots.
Revealing mistake: In the opening sequence, when the robbers are on the zip line, two Chicago Police squad cars (white cars with blue markings), not Gotham PD (blue with white markings) can be seen blocking off Van Buren Street for the filming. (00:01:05)
Factual error: When they reconstruct the bullet in the scanner, the fingerprint goes the whole way down to the bottom of the bullet. This would not be the correct pattern, as there should be a blank ring at the bottom where the bullet would have been covered by the casing. (00:56:50)
Continuity mistake: The Joker fires a rocket-propelled grenade at the Tumbler, sending it crashing end over end. In the final tumble, as it loses the last of its momentum, it's rolling to rest on its roof. The camera angle then changes and it's suddenly regained momentum, rolling again so it lands on its wheels.
Continuity mistake: Joker and Two-face are in the hospital; Harvey is about to flip the coin to decide if the Joker lives or dies. The camera angle switches back and forth between the Joker and Harvey. From one angle Harvey is wearing the monitor clamp on his middle finger with the grey wire, from the other angle it is gone. It disappears and re-appears every time the camera angle changes.
Revealing mistake: When Harvey Dent turns on the Bat Signal, Lt. Gordon comes out of the rooftop stairwell. As the door opens you can see that there is no back to the stairwell enclosure, and you can see the city. (00:25:15)
Audio problem: In the scene where Alfred is stitching up Bruce, Bruce says "I wanted to inspire people." As he says "people" the shot changes and his lips aren't moving, but the audio track continues.
Continuity mistake: During the opening bank robbery scene, the Joker reaches down to toss a duffel bag of money to the school bus driver. He is holding his pistol in his left hand and reaches for the bag with his right. But in the very next shot, his pistol is in his right hand and the bag is in his left. (00:04:50)
Continuity mistake: When Harvey Dent loses his face and is lying in the hospital bed, when he's turned with the damaged side against the pillow, we can see the inside of the side of his mouth which should be damaged, but it's fully intact. Then when he turns it's suddenly burned away.
Revealing mistake: As Harvey Dent is tied up in the warehouse with the explosive barrels talking to Rachel, if you look in the lower right hand corner of the screen, a green blanket on the floor moves up slightly as Harvey tries to get out of his restraints. It's too far away for Harvey to touch. A person's fingers or hand is also momentarily visible in the previous establishing shot when Dent is regaining consciousness.
Continuity mistake: When Eric Roberts gets in the car with Two-Face, the car seems to go from being parked to going full-speed in a split-second. As he's getting in the car, Roberts is talking to his driver, and just as he sits down, he sees Two-Face, and the background appears to be moving by very quickly behind him. The car wouldn't have had time to even pull away from the curb yet.
Continuity mistake: During the chase on Lower Fifth, the refuse truck's left headlamp is alternately present and lit, or completely missing (not just unlit). (01:13:30)
Answer: The gun fires using compressed carbon dioxide as a propellant. The cable is wrapped in a coil around a motorized turbine within the gun. The pulley system in Batman's belt buckle allows him to reel himself in hands-free and still maintain equilibrium. There is a four-pronged grapple at the end of the cable. This is what is magnetized, creating an attraction between it and the monofilament cable. This ensures that the grapple will attach itself to the cable for a secure hold. This is why the magnet itself does not need to be especially strong to support any amount of weight. It also explains the relative ease with which it can be detached and its seemingly "magical" ability to wrap itself around various objects.
Phixius ★