Roth, Veronica, <br/><br/>
Allegiant 

 - First published in the USA in 2013 
 -  HarperCollins Children's Books  2016. 
 - 526 pages  Bonus materials 30 pages 
 - The divergent series .
 - Divergent trilogy  Book 3 .
<br/><br/> Society is split into 'factions', theoretically, each faction contributes their specific talents to the good of the whole society but this has broken down.  Tris is ready to go beyond the fence and find a new life. 
<br/><br/><label>ISBN: </label>9780008167165 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>science fiction