I'm looking for the name of the movie about twins who go to live with their father after their mother dies. One of the sisters seems to hide in the room most of the movie. The sister who wont show herself to anyone but her sister has a cut/disfigured face. The scared sister kills the fathers and his wife before you find out the sisters are conjoined and the scared sisters face is under the others sisters hair all along....... Please help been searching for so long this movies title.