sentences:  "Palace of Mirrors", also authored by Margaret Peterson Haddix, was published in 2008 by Simon & Schuster is the second book of "The Palace Chronicles".The plot revolves around Cecelia, a girl who believes she is the true princess of Suala, and her quest to claim the throne.However, Cecelia discovers that the pretender princess Desmia is only one of many - Cecelia, Desmia, and eleven other girls were raised individually by royal knights who all believed they were protecting the "true princess" in secret.