Help with title of a movie
Hopefully one of you will be able to help me with the name of an old horror movie that my sister forgets the name of. She thinks it takes place on a farm and the killer wears a sack on his head with one eyeball cut out. (No, it's not Friday the 13th or The Devil's Rejects.) She said he's mentally challenged and that's basically all she remembers. Any help would be appreciated.

