The premise of worst movie of 2012 via IMDB:
"A cop investigates the case of a missing local teen, though he discovers a dark secret that has been unleashed in his town, and an evil spirit that will stop at nothing to find its heir."
It's tag line, "Picture Evil. It knows your there."
And that's probably all you wanted to know about the movie starring Christian Slater.
But just in case you want more, here's the trailer.