The final book in The Sentinels series by New York Times, USA Today and Wall Street Journal bestselling author J.S. Scott. Please NOTE: The Sentinels books don't stand alone well. Although each Sentinel gets a HEA in their book, there is so much of the overlying story arch that would be missed if you haven't read the other three books. Kristoff Agares, King of the Sentinels, is trapped in the realm of the Evils, so close to death. unstable and powerless...