One twin died. One twin lived. But did the dead twin ever let go?Chelsea is a grieving twin who claims her dead sister, Angelica, still visits and talks to her as if she’s real. When Angelica accuses Chelsea of forgetting her, Chelsea replies that she's not forgetting, she's just trying to live her life... which is exactly what Angelica can't do. Then Angelica causes a rift between Chelsea and her friends, and tries to get her twin blamed for a variety of things, from nasty notes to stalking people. Until an epic battle ensues, with the girls being pulled into the Underside, and Angelica unleashes her wrath. Will the living escape and continue to live? And what finally becomes of Angelica?