In this New York Times-bestselling novel full of action and adventure, a blacksmith's apprentice can summon demons. But can he win a war?

Fletcher is working as a blacksmith's apprentice when he discovers he has the rare ability to summon demons from another world. Chased from his village for a crime he did not commit, Fletcher must travel with his demon, Ignatius, to an academy for adepts, where the gifted are taught the art of summoning.

Along with nobles and commoners, Fletcher endures grueling lessons that will prepare him to serve as a Battlemage in the...