Marilyn Rockafellow

A young woman begins to suspect that her brother's young fiancée, an attractive Englishwoman, is actually a serial killer who kills men on the eve of their weddings. (imdb)

Anna Hart was always an odd child, a genius, a shoplifter, desperately afraid of flickering lights, with strange prophetic dreams. Simultaneously, several strange things begin to happen. A strange, mysterious neighbor, by the name of MacKayla moves in next door to the Harts. And, most frightening of all, Anna sees her exact double on the television one night. (imdb)