Stone of Serpents - The Arcanium, #3

A race against time to stop a deadly weapon leads to an epic showdown that will change everything. Certain he knows the whereabouts of the weapon coveted by Gideon Blackthorn, Ty returns to Ordanna in a desperate attempt to save both his best friend and the two worlds. When the risky plan backfires, Ty and his friends are forced to flee-into the most dangerous place in all of Arcania. Now hunted through lethal surroundings by the emperor himself, Ty finds himself in the biggest fight of his life, determined to finally put an end to the dark sorcerer's reign of terror. But when everything goes terribly wrong, will the people he cares about most be the ones to pay the price? A witty, action-packed fantasy adventure from award-winning author N.
P. Thompson, the Arcanium saga thrusts unsuspecting seventh-grader Ty Baxter into a dangerous new realm of intrigue and magic where he must band together with a group of unlikely friends as they fight to save two worlds from a dark sorcerer with an enchanted army of crows.