dead dudes in the house

Eight friends go to fix up an old house that Mark has purchased. Upon arriving they find the grave of Annabelle (the former owner) in the back yard. She had killed her husband back in the 40's. Bob (one of Mark's friends) smashes the headstone and awakens Annabelle, this begins the carnage. But the dead don't stay dead and the living can't escape as the house locks down to keep them in