Audio problem: When we see a close up of the LP playing on the gramophone, you can occasionally see the needle is not actually touching the LP but sound is still heard.
Audio problem: After the Gluttony murder, both detectives drive to the forensic and have a chat. The audio is slightly out of sync with their lips. Spanish DVD release. Fixed in the Blu-Ray edition.
Audio problem: The helicopter appears in front of the window (like, a few feet away) of the command deck of a ship in the middle of the ocean, with the ship being in full alert and with guards all around the premises but who all somehow missed its deafening arrival. (01:35:50)
Audio problem: When Nico goes to Angel's house, he is confronted by a dog barking at him. The dog is shown aggressively moving its head up and down whilst the camera is focused on it. The camera then cuts to focus on Nico, where the aggressive barking is still heard, but the dog is standing completely still. The dog couldn't have been barking that aggressively if it were standing still; the barks were likely dubbed in. (00:05:12)
Audio problem: Hotel room scene; after assessing the state of a shirtless Cross' ribs, Kate says "At least now the FBI know who they are looking for." Most of the sentence is pronounced off-screen, but it begins with Ashley Judd with her mouth shut. (01:14:35)
Audio problem: When Bart is looking through a magazine and starts to rip a page out, the whole page is lifted and obviously already loose; Bart sets it down to look like he is tearing it out, and sound effects are added to make it appear he really is ripping out the page, but the sounds don't really match his motions. (00:31:20)
Audio problem: The chef finally gets the bright idea to fire his hunting rifle at Morgan's fleeing vehicle. In a previous scene he was grabbing ammunition for his rifle, and he also loaded it. The rounds appeared to be high power rifle ammo, probably in the 7mm Remington magnum or .30-06 range, very common hunting rounds. When he fires his rifle it sounds quieter than a suppressed shot, however he has no suppressor on the muzzle end of his weapon. (01:09:20)
Audio problem: When Farley traps The Shadow in the water tank, he declares that "I'm going to be a king! A king!" He says the second "A king!" without moving his mouth.
Audio problem: When the CT technician asks John if he'd like some help getting down, John says "Thank you very much", but you can tell that he's not saying anything and that the line is just dubbed in. (True, the camera is facing away from him, but his jaw and face aren't moving at all.)
Audio problem: During the final test, at one point Marcus says "Shoot this piece of s**t Ezekiel, now." In the first shot, it's clear he's saying something entirely different as his mouth movements don't match the dialogue. The scene then cuts to a closeup mid-line, and the closeup does match... but the first shot doesn't match in the slightest.
Audio problem: After Moose Matson is shot in the cop and car chase, Moose Matson, says, "Pull over, will ya?," but his mouth isn't moving.
Audio problem: At the police station, Helen and Jake are talking. When the camera is on Jake, Helen says her lines but her mouth and the words are out of sync.
Audio problem: Towards the end of the film when the sergeant is directing the police choir, their mouths are not moving in sync with what they are heard singing.
Audio problem: When Niko is going to get the key for somewhere for Zoe to hide and then Zoe disappears he says "Zoe"? When he says it his mouth does not move but once he finishes saying it that's when his mouth moves.
Audio problem: When demon Bruno comes crawling towards Arne, the jumpscare sound comes earlier than we can see the demon. (00:24:05)
Audio problem: When Frank says "Stay away from it!" whilst trying to shoot the truck during the chase sequence towards the end of the film, his mouth doesn't move.
Audio problem: Katherine visits Poirot at the field hospital; the opening line has a loud gulping, most likely dubbed, and then Branagh's voice says "I asked you...not to come" with the second part of the sentence added in dub; his lips don't move. (00:05:45)
Audio problem: When Carrie Fisher and David Soul make out in Trieste, a performer at the local restaurant is supposed to be singing the popular Italian song "Torna a Surriento", but his lips barely even move and it's self-evident that he's not the one singing. (00:11:30)
Audio problem: After Taylor's been hit Dr. Galen says "he's lost a lot of blood", but his mouth is not moving.
Audio problem: In the boiler room, Blore responds to Lombard saying "I still wanna be a living idiot." In the next shot, Stanley Holloway's lips are moving with no sound before Shirley Eaton's arrival. (01:00:00)