Continuity mistake: After Sarah and Rios come out from the flooded cave, their clothes are bone dry even though there were almost fully submerged underwater. (01:01:25)
Continuity mistake: During the paper cut scene, when Bella is thrown against the table, there are 5 vases of flowers and 3 sets of candles. After she hits the table she lands against one of the vases and knocks the 2nd one to the floor, but the next shot shows only one vase left upright. (00:14:50)
Continuity mistake: When Trent and Bree are having sex, the ceiling fan is on then off.
Other mistake: When Laurie has her episode in the bathroom about killing Annie, the clock stays at 7:03 the whole time.
Factual error: Water can't put out chemical fires.
Suggested correction: Nonsense. Not all can be put out with water, some can.
If you did research on fires you will see that putting water on chemical fires makes it spread. Gasoline and oil float to the surface of the water and continue to burn.
Plot hole: So he needed the help of a big strong burly guy to flip the safe with the body, end over end to the pit, but he somehow was able to easily get it out of his basement and into the back of his car by himself?
Revealing mistake: After Martin cuts his arm off, there are several scenes where you can see the bulge of the actor's real arm under his jacket. This is most noticeable when he is running through the birch wood, and when rooting through the ruins of the burned cabin.
Factual error: Abby has trees surrounding her house yet there aren't any in Nome Alaska.
Factual error: In the beginning a calendar says 2019 April, you can see April 1 being Tuesday when actually April 1 2019 was a Monday. (00:01:10)
Continuity mistake: When Romey hits the little boy, she immediately parks her car and gets out. She closes the door behind her and runs to the little boy. After making sure he is ok, she goes back to her car and the door is open.
Continuity mistake: When we first see Anna's mom, the bell is on her left hand. But in the scene where Anna is down in the beach house at night and sees her dead mother, the bell changes to her right hand.
Continuity mistake: Near the start, after Lucian saves Sonja from the werewolves. Before Sonja throws Lucian the the sword, Viktor and his guards are walking around the corner next to the ladder. When she throws it they disappear, when Lucian catches it they reappear. (00:06:30)
Factual error: During the surgical operation, Dr. Heiter makes incisions on the buttocks for the triangular flaps of connecting flesh; but the flaps are pointing outward, rather than inward. The only way to graft the buttock flesh to the face of the next subject would be with the buttock incisions pointing inward.
Continuity mistake: After Emily burns her home it's night time, then she follows the police cars and it seems like evening, and when she comes out from the water the sun shines in the background.
Revealing mistake: It's an obvious rubber dummy when Chavez cuts off Juarez's leg. (00:43:30 - 00:44:05)
Revealing mistake: Axel's badge says deputy sheriff. He is THE sheriff. Not a deputy.
Continuity mistake: After Esther suffocates Daniel in the hospital, Kate slaps Esther in the face. The hospital staff then hold down Kate and she drops her iPhone, screen down. The iPhone starts ringing, even though the screen is facing the floor. In the next scene, it is still ringing, but with the screen facing upwards.
Factual error: We see Hoffman has to use pliers and force to remove Strahm's hand from the grill. However, since the hand is freshly severed, rigor mortis would not have set in, and he should have been able to remove it with ease. (01:09:30)
Plot hole: With people around the world turned into zombies, there is no way to maintain power plants, thus no lights should be lit, not to mention the functionality of an amusement park.
Suggested correction: The sequel film gives this a (very flimsy) justification, saying that everything runs on power from dams. Stupid, but at least trying to explain things.
Continuity mistake: When Ben is driving the car away from the store where they buy the comping supplies, the headrest in the car is missing, but it reappears in the next scene.