01414cam a2200397 i 4500 386140343 TxAuBib 20190709120000.0 140927s2016||||||||||||||||||||||||eng|u 2014036962 9781481417587 hardcover 1481417584 hardcover 9781481417594 pbk. 1481417592 pbk. TxAuBib rda Haddix, Margaret Peterson. Under their skin / Margaret Peterson Haddix. First Edition. New York : Simon & Schuster Books for Young Readers, [2016] 311 pages ; 22 cm. txt rdacontent n rdamedia nc rdacarrier Under Their Skin ; 1 Twelve-year-old twins Nick and Eryn investigate why their mother and new stepfather are keeping secrets, why they are forbidden to meet their stepsiblings, and, most important, why their lives are in danger. Ages 8-12. 20190709. Robots Fiction. Human beings Fiction. Extinction (Biology) Fiction. Secrets Fiction. Twins Fiction. Brothers and sisters Fiction. Science fiction. Under Their Skin ; 1.