Jill Anderson didn't want any of this. She didn't want to have a split personality and have to share her mind with another person. Now, after Jack, Jill's other personality, takes over her mind and body, the only thing is allow to do is tell her story, leading up to Jack's takeover of her body. So, this is Jill's story, beginning to end, no lies, all truth. Because that is all Jill has left.