Allegiant by Veronica Roth

As Tris, Tobias, and their friends travel outside of their known world, the discoveries made change everything.  This book offers an outsiders look into what Tris and company thought was their life, and of course, wasn't at all their lives.  I loved how the author wrapped up this trilogy.  Like everyone else on the internet, I am so glad I picked up this book and now see how everything fit together.  Please do not stop at book 2.  You have GOT to read Allegiant.  It will all make sense, I promise.