School Library JournalGr 6 Up—When Grace Pizzelli's older sister does not return to reality from a virtual video game, Grace is called upon by Rasmussem, the video-game company where Emily is interning, to enter the game and rescue her. She discovers that her sister is not trapped in the game, but rather she escaped into it after a serious falling-out with her friends in the real world. If she cannot convince Emily to come home soon, she may be lost forever. The plot is full of twists and turns-just as it seems as if Grace has convinced Emily to exit the game, another obstacle presents itself. The action mounts with the conclusion, which serves as a realistic cautionary tale against computer hacking. Vande Velde does a great job of developing Grace and Emily as authentic characters.