Continuity mistake: The "Santa" carrying the Molotov Cocktail walked up the steps and past the decorated handrail, but he was standing within the length of the handrail (about mid-way) when the camera shifted from the right-rear to left-rear side. (00:02:40)
Factual error: Josephine walks away from her father King Louie 14th, after he tells her she has to marry the young Duke Lintillac for his money. When you look at back of Josephine, you can see a zipper in her skirt. King Louie 14th was King from 1643 until his death in 1715. The first zipper was invented was in 1851. The zipper being used as we know it present day was invented in the early 1890s by Whitcomb L. Judson. (00:55:57)
Continuity mistake: While the 2 main characters are playing pool the balls keep changing position and so does the cue chalk. (00:14:00 - 00:17:00)
Revealing mistake: When William and Jack open the door, enter the room, and walk past the helium-filled balloons (tied to a chair about 4' away), the balloons remain immobile. Due to how light helium balloons are, just opening the door or breathing nearby would be enough to cause the balloons to move somewhat - if they were actually there. (00:16:00)
Revealing mistake: The aerial view showed it was not raining during the "supercar race", but the ground views showed at least two cars getting sprinkled on (one enough to turn on the wipers). When the camera shifted to road-level, the cars and road were dry. (Suggests filming at different times). (00:31:15 - 00:31:48)
Other mistake: Visser was face-to-face with Omar when she shot him in the neck (looked more like it would be in his mouth before the camera shift) yet she did not get any blood splatter on her shooting hand, face, or clothes. There also wasn't much blood on Omar considering he was hit with a near-contact if not actual contact shot. (00:45:41 - 00:47:12)
Plot hole: When Cage and his wife and mates are going to the FBI safehouse the FBI agent shoots 2 baddies two separate times whilst Cage etc. are ascending the stairs, yet they don't hear the gunshots.
Character mistake: Nolan said, "Everybody knows that no sharks swim in freshwater" and Spencer said, "They don't come into freshwater", but there are freshwater sharks (e.g, river sharks) and bull sharks (not true freshwater sharks) can survive in saltwater or freshwater. Jacob Harper (National Aquarium) pointed out eyewitness accounts of sharks swimming up the Mississippi River and "bull sharks have kidneys that recycle salt" but did not mention the glands near their tails that help keep salt in their bodies. (00:08:08 - 00:29:50)
Other mistake: James told Det Vargas he left the bar "2:30, give or take" and Vargas responded, "bar closes at 2:30 [AM]." When Star approached James at the bar, she said, "When I see a guy alone at the bar at three in the morning..." It is questionable if Detective Vargas was correct about the closing time. Traditionally, bars in L.A. closed at 2:00 AM. CA's Business and Professional Code on serving alcoholic beverages apparently now allows serving alcohol until 3:00 (not 2:30) AM - was this in effect? (00:04:33 - 00:11:50)
Revealing mistake: The 50 dollar bills that appear in the opening credits all have the same serial number (and you can find online the texture they used with great ease, just like the one for the 20 dollar bills stack). (00:03:45)
Continuity mistake: There are two stand-up picture frames on the table. Judy knocks over one picture frame as she walks towards and points mace at Burton. Judy continues holding the mace in her right hand and purse in her left and does not bend over to upright the frame. When Judy leaves, the picture frame is upright and roughly parallel to the other frame. (00:25:45 - 00:27:20)
Deliberate mistake: The thug wearing headphones and facing the money on the shelves did not notice that Savage forcefully opened the door several feet to his right, slamming it against the adjacent wall, or that Savage had entered the room. The bang to and vibration from the door hitting the wall should have been enough to overpower the sound from his earphones, but - even if they weren't - his peripheral vision should have sensed the door opening and Savage entering. (00:02:55)
Continuity mistake: In the opening scene, after the glass of water slides toward the lady (and is about even with the top of her plate), it is above the plate when the camera shifts. (00:01:14)
Continuity mistake: The clock on the wall at Pee Wee's Pawn Shop advanced from about 12:00 to 12:05 when Frank was talking to Jerry, but it was back to around 12:01 after a few camera shifts. (00:05:59 - 00:06:24)
Factual error: Pettis' calculation of the amount Connor needed to replace his asset was way off. He stated, "[Cornell] brought me about 250 [$250,000] a year. He had at least 20 more years of service. Subtract five years he might have spent in prison, so you owe me, what? Six point two million." Pettis was presented as intelligent, but a quick mental calculation of even the full 20 years at $250,000 would total only $5 million (not $6.2 - an odd sum). For 15 years, the total would be $3,750,000. (00:28:45)
Continuity mistake: ,After Cam sprays Will and Danny with the fire extinguisher, the amount and locations of foam/chemical powder on Danny, in particular, changes a few times, even covering a much larger area of his face/clothes and being thicker after he got out of the ambulance. Will was sprayed first and longer, but his face/clothes looked practically spotless. The interior of the ambulance did not show signs of a fire extinguisher having been recently sprayed. (00:46:29 - 00:47:13)
Continuity mistake: The clock on the wall behind Casey jumped from 10:45 to 11:00 while he was talking to his wife and daughter. At times, the clock appeared to have 3-4 hands and when a hand should have been visible behind his back pointing at "12", no hands could be seen. (00:19:16 - 00:19:46)
Continuity mistake: The way Banshee's bangs are combed back vary a few times in a couple minutes (elevator fight scene). Sometimes, the left side is higher than the right side and other times the highest point is near the middle of her forehead. The "curve" at which the bangs are combed toward the right side also vary, from little to no curve to wavier toward the right. (00:06:36 - 00:07:57)
Revealing mistake: When Travis arose from the couch, "Little Man" - sleeping right next to him - did not move at all or even open his eyes, which would be extremely unlikely for a "real" dog; the dog, though appearing to be "breathing", was fake. (01:17:30)
Continuity mistake: Smoke was no longer coming out of the wrecked car when The Thief had his back to it while he was shooting at a thug's feet, but it resumed when The Thief turned around to face the car. (00:05:20 - 00:05:43)