Sacha

Continuity mistake: Before the mother is covered in glasses, she runs away, her hair covered in dust. A shot later it's clean and shiny. This is because the actress was replaced with a stunt with a wig. (00:58:50)

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Revealing mistake: When the California Seismological Institute collapses, the old boss is replaced by a much younger stunt. Also, his sleeves swap between rolled up or not and his tie disappears.

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Continuity mistake: A huge chunk of ceiling falls right next to the drunk guy, but the very next shot of him shows not an inch of dust around and the exact lighting as he had before the mess.

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Continuity mistake: During the quake, Corry is riding his bike on the bridge and loses his balance, then rests his left hand on the bridge. A shot later it's holding the handlebar.

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Revealing mistake: When the cattle truck falls out of the collapsing highway, none of the cows move a single inch nor fall off, revealing the real truck was replaced with a miniature prop set.

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Continuity mistake: When Rosa exits the cinema a woman in pink with a white purse runs away. Several seconds later she is inside the cinema and is running away again.

Sacha ★

Continuity mistake: During the fight at the bar, the bald man is lying against the wall, with a man on top of him. Immediately after, barely half a second later, their positions are totally different: the bald man is away from the wall and on top of the other man plus the surrounding people have changed places and pool cues have appeared out of nowhere.

Sacha ★

Continuity mistake: After Adams talks to the farmer, his aide is inside the trench, walking right next to the wooden ladder. A shot later he is four meters away from the ladder.

Sacha ★

Continuity mistake: When the farmer asks Adams if he knows what he's doing, check the man in the background: He walks inside the ditch, then a shot later he is out and walking inside again; but then another shot afterwards he's out again and walking inside for the third time. All in a matter of 3 seconds. (00:18:40)

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Revealing mistake: When Stewart climbs up the rope to save Sam, in the wide angles he is replaced by an obvious stunt: younger and with different haircut.

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Continuity mistake: When talking to the farmer, Adams drops the papers on the floor. A shot later they're back in his hands, and he's dropping them again. (00:18:32)

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Continuity mistake: Officer Chavez puts his left arm around the floodgate, but a shot later his arm is away, and he is repeating the previous movements. (01:05:32)

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Continuity mistake: When the farmer visits Mr. Adams, he's alone inside the ditch. Half a second latter a man in a brown shirt is standing next to him. (00:18:29)

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Revealing mistake: When the car chase comes to an end, check the curb where the cars drive over: a small ramp has been placed to allow for the stunts.

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Continuity mistake: During the earthquake at the bar, a man in a yellow shirt crashes against the jukebox. A second later he is next to the pool table.

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Revealing mistake: When Adams is inside the trench and dirt begins to pour, he is replaced by an obvious stuntman with a totally different hairstyle.

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Revealing mistake: During the car chase (an obvious rear projection), Lew keeps turning the steering wheel around despite the car driving straight. (00:09:39)

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Continuity mistake: During the quake at the Seismological Institute, one of the men's shirts changes from beige to dark brown between shots.

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Continuity mistake: When the car chase ends, the speeding car stops next to a tree. A shot later the car is 10 meters away from it.

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Audio problem: When Stewart leaves the parking lot, there's a cop holding a loudspeaker whose mouth doesn't match the audio at all.

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