Biography: Cassandra Peterson is an American actress best known for her on-screen horror hostess character Elvira, Mistress of the Dark. She gained fame on Los Angeles television station KHJ wearing a black, gothic, cleavage-enhancing gown as host of Movie Macabre, a weekly horror movie presentation. Her wickedly vampish appearance is offset by her comical character, quirky/quick-witted personality, and valley girl-type speech.