Under their skin

From New York Times bestselling author Margaret Peterson Haddix comes the first book in a "crisp, intriguing, and thought-provoking" (Booklist, starred review) new series about twins who are on a quest to discover the secrets being kept by their new family.
Nick and Eryn's mom is getting remarried, and the twelve-year-old twins are skeptical when she tells them their lives won't change much. Well, yes, they will have to move....