Don't Let Them In.

While dealing with the aftermath of escaping an abusive relationship, Heather starts to believe there is a vampiric shape shifting creature trying to trick her into getting inside her home. Memories of witnessing a traumatic event years ago involving the same creature come flooding back after she is mysteriously gifted the creatures calling card - a smooth stone engraved with a strange symbol. With the help of a supportive friend, Heather must finally confront her demons in the form of the monster that is haunting her, and summon her inner strength to finally defeat it.