Extraterrestrial

Continuity mistake: When April shoots the alien, they all go outside to look at it. Behind them, you can see the windows boarded up, but they don't board them up until later in the movie.

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Mistakes

Plot hole: When April and her friends are trying to get to town, the road is blocked by a huge tree. Yet later in the movie, the police arrive at the cabin they are staying in. How did they get there since the road is completely blocked off and there's only one way in and one way out?

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