The screenplay is credited to one "Gisela Bernice," but as anyone familiar with the work of writer-director-producer Linda Yellen could probably tell you, no such person exists. The name is a pseudonym adopted by Yellen and her ensemble casts, who improvise their way through Yellen's films. And like "Bernice's" previous efforts, the made-for-cable films CHANTILLY LACE and PARALLEL LIVES, the results here are decidedly mixed. The setting is lovely Weehawken, N.J., a quaint New York City suburb graced with cozy Victorian homes and a stunning view of the Manhattan skyline. One Halloween night, three couples assemble at the home of Katharine (Lynn Redgrave) and her much-...