Magic, danger, and adventure abound for messenger Karigan G'ladheon in the third book in Kristen Britain's New York Times-bestselling Green Rider fantasy series More than a thousand years ago, the armies of the Arcosian Empire, led by sorcerer Mornhavon the Black, crossed the great sea and tried to conquer the land of Sacoridia using terrible dark magic. Eventually, Mornhavon was captured, and his evil spirit imprisoned in Blackveil Forest. Since that day, the perimeter of Blackveil--now a dark and twisted land--has been protected by the magical D'Yer Wall. But in the centuries since the war's end, knowledge of the working of magic disappeared from Sacoridia, due to the fear and prejudice of a people traumatized by Mornhavon's sorceries. Karigan G'ladheon is now a seasoned Green Rider--a member of the magical messenger corps of the king. But during her first year as a Rider, a rogue magician cracked the mighty D'Yer Wall. The spirit of Mornhavon, sensing the weakness, began to wake,