Magisterium - Der Schlüssel aus Bronze

After Call and his friends have fended off the enemy of death at the risk of their lives, the Magisterium hosts a party for them. Instead of celebrating, however, Call must fend off the attack of a chaos-madman. The creature was supposed to be stuck in a dungeon under the school, but someone let it out. There's gotta be someone in the department who wants to kill Call. Or are both Makaris in danger? The friends do everything they can to find out who the spy is in their own ranks - and they realize almost too late who it is, whom they must not trust under any circumstances...