Margaret Peterson Haddix  2016 <br/><br/>
Under their skin 
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. 
 - New York   Simon & Schuster Books for Young Readers  2016 
 - 311  11cm 
 -  Book 1  9781481417600 .
<br/><br/> Adult 
<br/><br/><label>ISBN: </label>9781481417594 
<br/><br/><label>LC Class. No.: </label>PZ7.H1164  / HADD 
<br/><br/><label>Dewey Class. No.: </label>EF HADD  / HADD