Continuity mistake: During the complete car-bomb chase sequence towards the end of the film, Michael Clayton's car is shown in one shot without its lights on. All the surrounding shots in the scene have both cars with their lights on. This is also a slightly revealing error because it shows that they actually filmed these sequences during the day using neutral density filters. (01:41:15)
Visible crew/equipment: In the scene towards the end of the movie when they are at the dinner table, Dory is telling Kelly about the time his father shot a squirrel and cried. If you look closely at the lower right hand window towards the back, you see a face appear in the window. It looks almost ghostly.
Continuity mistake: During the very last scene, where everyone follows Bull into the pool, Ashley is one of the people who jump in after Bobby. However, after she has jumped in, the next shot is of her and Erik on the side, after which she jumps in again.
Continuity mistake: At the place where Libby's birthday is being held, when Dennis and Gordon are talking to Libby and Whit, the pictures behind Dennis and Gordon keep moving positions.
Continuity mistake: In the opening scene when Rod is jumping the trailer, in one shot his helmet buckle is undone. In the next shot, it is firmly locked.
Visible crew/equipment: During the scene where Harrison raises his fist to Rowena, there is a brief moment when you can see what looks like a shadow of a boom mike and crew member behind Rowena's head on the ground behind her. (01:16:35)
Continuity mistake: As Mike scrolls through the microfilm, we see his view as the pages scroll from right to left. The shot then reverses to show his face through the scrolling film, but while the film is now properly reversed, it's still moving right to left in our view. But this reversed angle should show it moving left to right. (00:12:05)
Continuity mistake: In the scene where Randy is playing table tennis on the stage at the restaurant, just after he has finished hitting the ball blindfolded and says, "Thank you", you can see a man in the background getting up. The shot then switches to the boy with the man in the background still sitting. The shot then switches back to Randy and the man is getting up again.
Continuity mistake: The whole time Dan is in the bookstore and outside talking to Marie, he is wearing a blue undershirt. However on his way home from the bookstore, he runs a stop sign. When the cop comes up behind him you can see that his undershirt is now grey. When he gets home and walks through the door, his shirt has gone back to blue. So Dan's shirt changes a few times when everything is supposed to be in the same sequence of time and events.
Plot hole: Spoiler! We find out that "Rogue" is actually Tom Lone, who killed the real Rogue and destroyed his face to prevent identification, then had plastic surgery and went underground to get revenge. But how is the body never identified? Lone was a cop, they'd have blood type, DNA etc. on file, which would have proved the body wasn't his.
Continuity mistake: In the scene outside the hospital, after Nick Poole has been shot, Remy Bressant picks up the bottle of liquor, which was capped by Patrick Kenzie and drinks straight from the bottle. The bottle has mysteriously uncapped itself.
Continuity mistake: When Jean-Do is shaving his father, there is suddenly a lot more shaving cream under his nose where he had already been shaved. Also, because the camera is so close, you can tell that he had no stubble anywhere to begin with. (00:55:30)
Continuity mistake: When Lamia is in the coach communicating with her sisters in the mirror, her image goes from old to young back to old again between shots. (00:59:40)
Continuity mistake: At the beginning, in the scene where Rayne finds two bodies near a small house, she takes out one of her blades. Firstly, she grabs it in a wrong way (the tonfa-like blades should be held under the arm), but when the camera angle changes she holds it properly.
Continuity mistake: In the shower scene where the soaps are dropped, what Larry is holding changes constantly. He goes from holding a white tube of something, to holding what appears to be a green shampoo bottle, to digging in a zippered case with his stuff in it, back and forth and around, several times.
Visible crew/equipment: When Lila and Eddie are driving to Mexico on their honeymoon, Lila is singing. In one shot on the outside of the car, a very blatant and obvious reflection of the camera attached to a crane, can be seen on the whole side of the car. (00:23:40)
Visible crew/equipment: In the scene where Doyle is talking to the helicopter pilot at the park, you can see another pilot on the left side of Doyle's head for a split second. (01:14:50)
Continuity mistake: When Daphne first meets Jason, she places two of Milly's business cards on the table and Jason takes one, leaving one remaining. But when Johnny takes a card for himself after talking with Daphne, there are still two business cards on the table. (00:19:30)
Factual error: There is a scene near the beginning of the movie when the mist has just begun. A firetruck roars by, and has Caddo Parish Fire Dept. on the side. This movie is set in Maine. Louisiana is the only state with parishes. All others, including Maine, have counties. (00:10:50)
Visible crew/equipment: When George drops Lee, Carter and Genevieve off outside the embassy to meet Reynard, right before George tells them he won't be there when they get back, as the camera moves around the car a reflector screen and a crew member can be seen reflected in the side window of the car.