THRILLER - In this taut, arresting debut, a woman becomes fixated on her neighbor--the actress. Though the two women live just a few doors apart, a chasm lies between them. The actress, a celebrity with a charmed career, shares a gleaming brownstone with her handsome husband and three adorable children, while the recently separated narrator, unhappily childless and stuck in a dead-end job, lives in a run-down, three-story walk-up with her ex-husband's cat.