Dead by Dawn (2008)

Dead by Dawn is a ghost story, about identical twin sisters. Eight months after one is brutally raped and murdered, the grieving twin and comforting friends leave for the cottage to celebrate their high school graduation. The minute the step foot in the cottage strange yet puzzling things begin to happen. Tanya begins to see horrifying visions and hears voices she can't ignore. As the night wanes only Tanya remains as she unearths the truth into the long buried secret of her missing twin sister.