Best horror movie mistakes of 2010
Continuity mistake: Right after Bennett takes off in the plane, Claire throws a gun to Alice. Between the slow-motion shots, the gun switches position in mid-air before Alice catches it. In the shot of Claire throwing it, the barrel is facing to the right, meaning that it should be facing to the left in the shot of Alice catching it. But it still faces the right when she does.
Continuity mistake: The chunks of ice in the asylum dunking scene appear and disappear. When Lawrence is brought to the surface, he has two chucks of ice on him that fall off leaving none, but when the shot cuts to him being raised and locked upright, there's a chunk of ice on his right arm. A minute later when he's lowered again into the tank, there's a large chuck by his hip but vanishes when the shot switches showing Lawrence's left side.
Deliberate mistake: At the beginning of the movie while driving through town the old rusty horse trailer was facing from left to right. at the end of the movie as they were leaving town, they showed the same trailer and the picture was inverted, parked in same location,however it was facing right to left.
Continuity mistake: When Abby slaughters the bullies, we see most of the scene from Owen's underwater point of view. First, a decapitated head floats down, leaving a trail of blood. Then, more dismembered bodies splash into the water. We get the sense that the pool water around Owen should be pretty bloody. Yet, when he surfaces, the water around him is completely clear, with no evidence of any blood or bodies.
Plot hole: When Dylan enters the vampire Vargas's bedroom to interrogate him, Dylan frequently steps away from the door to let sunlight in to burn Vargas, so that Vargas will cooperate with the interrogation. Vargas is in his bed and could easily cover himself with his sheets to block the sunlight, but never does.
Factual error: When Luke puts the starting cables on the battery of the pick-up truck sparks fly from the connection. However since he hasn't connected the cables to anything on the other end yet no sparks should be visible. Next to that the battery is nearly dead so there is no power to give the sparks in the first place.
Continuity mistake: After Dave stabs Ravi, the shot cuts to Kurtis running through the woods trying to escape. Ravi (in the clown costume) is seen among the ones pursuing him, but he's either dead or dying at this point, and, obviously, cannot chase someone while riding an ATV. It's a recycled shot from when Tommy was attempting to escape.