Frannie Thorstin is a divorced English professor, living in a two room New York apartment. She spends much of her time alone, working on a book about dialects and idiomatic language. One evening at a bar, Frannie stumbles upon a man and a woman engaged in a sexual act. A week later a detective shows up at her door. The woman's body has been discovered in the park across the street. What follows is a chilling tale of lust and murder as Frannie finds...