Return of the Evil Twin (Sweet Valley High)

Plot

Jessica and Elizabeth Wakefield have no idea that their world is about to be turned upside down -again. Last Christmas, Margo - a girl who looked, talked, and dressed exactly like Jessica and Elizabeth - arrived in Sweet Valley to take what she considered her rightful place in the Wakefield home. On a dark winter's night, Margo fell to a violent death, and the Wakefields thought their nightmare was over.