People are being unnecessarily harsh about this movie.Sure some of the actinf wasnt top notch but Ive def since much worse. I didn't find it slow or plodding at all. I suppose Id have enjoyed a bit more detail on some things but overall it was good.
Its definitely been done before but most horror has. Its hard to find fresh.
I felt tension throughout most of the movie and even felt myself yelling at the screen! Especially near the end!
All n all I liked this one and would recommend it!