When a young woman with a sordid past witnesses a murder, she finds herself fascinated by the killer and decides to track him down herself. Amy lives a lonely life, helping the house-bound receive communion in the Gravesend neighborhood of Brooklyn. Oneof her regulars, Mrs. Epifanio, says she hasn't seen her usual caretaker, Diane, in a few days. Supposedly, Diane has the flu--or so Diane's son Vincent said when he first dropped by and vanished...