After Tris's Tragic death, Four unvales a note from Tris . The note holds many secrets of Tris Prior, which one of those secrets holds the key to danger, excitement, vengeance and anger. Will four be able to keep it together for Tris's sake? and was it really Jeanine Mathews fault that Tris is " dead" or was there a secret mastermind that no one would have expected?