"Chelsea knows that her sister is dead. But she also knows that Angelica never really went away. Ever since that tragic day, Angelica has been around. Talking to her. Listening to her. Being her truest friend. No one else can see Angelica, and Chelsea has learned to lie about her existence, because nobody else would believe it. It's their secret... until Chelsea makes a new friend and Angelica becomes jealous. Jealous enough to hurt someone. Chelsea's biggest secret has become her biggest fear."-- Back cover.