*Spolier* About Joe and Corey...
I take it that Joe's life was spared because she was pregnant and somehow the killer knew that.
I was starting to think that Corey set the whole thing up. When Joe found him, he seemed to have an underlying tone to everything he said and was almost expecting him to say something to Joe like "You all fell for it..." and find out that he was the "killer" all along. Joe said that she heard him being killed, but did she really?
I guess that was the point of the movie: to make you think. It had a bit of Blair Witch to it, moved a bit slow and the ending kinda sucked, but other than that (LOL), it wasn't bad. I would say better than the crappy high budget "horror" movies I have seen lately.