http://www.youtube.com/watch?v=c4i9Ya10Kqg&feature=related 

"Helen and Ruth were best friends at school. Helen, according to Ruth, was one of the prettiest and cleverest girls in the class. Whenever Ruth thinks of school she thinks of the fun times she shared with Helen. Soon after leaving school, however, they lost contact. Fourteen years later Helen and Ruth bumped into each other by chance on a train. As they sat together on the train, Helen told Ruth that she had Multiple Personality Disorder, had been satanically and sexually abused as a child and had tried to take her own life on a number of occasions. Since that meeting six years ago Ruth and Helen have begun to rekindle their old friendship. This film follows Ruth on her journey of discovery into Helen's world. We accompany her as she gets to know her friend again, as she tries to find out what happened to Helen in the fourteen years they were apart and to understand what it means for Helen to live with Multiple Personality Disorder (MPD)."