Angel (1983)

15 year-old Molly is the best in her class in high school. Nobody suspects that the model pupil earns her money at night: as prostitute "Angel" on Sunset Blvd. The well-organized separation of her two lives is shattered when two of her friends are slain by a necrophile serial killer. She's the only eye witness and becomes a target herself. The investigating Detective Andrews helps her, not only to survive, but also to query why she keeps on humiliating herself and to stop it.