Continuity mistake: When they are gathered down in the cellar, right before Cindy says "are they gone?". Have a close look in the background. There is a lot of stuff and mess there. Later when Cindy has the flashback from the tape we see the exact same corner as earlier, but now it is cleaned up and the ladder has been placed there. (01:00:10 - 01:06:20)Mortug
Continuity mistake: At the very end of the movie after the wedding, Cindy and the other guy drive off, leaving Cody behind. We see the boy running after them along a straight road. After Cindy stops short of striking the child, Cody is then hit by another car coming from his right hand side and they're suddenly at a crossroads. They weren't at the crossroads a couple of seconds earlier. (01:11:30)Neil Jones
Continuity mistake: After talking to Cody outside of the school, it shows Cindy pulling away. A few feet away, you can see a blue trash bin, as well as a blue banner hanging from a building. Inside the car, Cindy pulls a few feet away way from those two things. However, after she notices Cody is not in the car, it goes outside the car again, and Cindy is shown at the same place as before, but did not move there.
Continuity mistake: When Cindy is in the cellar and Tabitha is standing right behind her following her moves, Cindy then tries to surprise Tabitha by quickly turning around. Tabitha then jumps to the side and stands still for about half a second. Then it cuts to a wide shot and you see Tabitha slightly move to the side again and her hair swings (which it wouldn't as Tabitha was standing in that position for a second already). (01:08:05)Mortug