Best horror movie mistakes of 2011
Continuity mistake: During the bridge collapse scene, when Olivia is crawling on the beam, she is first seen on the part of the beam that is closer to Sam. Almost instantly afterwards, she is on the part of the them that is closer to Molly. The space between the two beams increases significantly between the two shots as well.
Factual error: The Song "Looking for the Magic" by the Dwight Twilley Band plays on repeat several times throughout the movie, however it comes up as track 1 on the CD player each time."Looking for the Magic" was never the first track on a Dwight Twilley CD - It was track 2 on the group's 'Twilley Don't Mind' album released in 1977. You can tell the disc is not a homemade mix CD by the printing on the top of the CD the first time it is placed in the tray.
Deliberate mistake: Right at the end of the film, the two Norwegians (Lars and Matias) are seen chasing after Lars' dog in a helicopter. Notice how their clothing and the interior of the helicopter are not the same as they looked in the original 1982 film by John Carpenter. It's supposed to be the same event.
Plot hole: The very last scene shows Mary building a wall, apparently in her belfry. But there should still be the original wall that Rose built, with the hole in it that Mary smashed in. By killing Rose / having killed Rose, she prevents further harm, but all effects that took place before that (also the building of the wall), should stay (like her scars).It is very unlikely Mary broke down the whole wall just to add another body.
Continuity mistake: In the scene where Lily is hiding behind Thomas' computer desk, she uses her little Eiffel tower necklace to put inside the socket to short out the power. When she goes to put it in, you can see the computer is plugged in on the bottom socket. After a really quick cut scene, the computer is now plugged in on the top socket.