The Copper Gauntlet (Magisterium 2) by Holly Black and Cassandra Clare

Callum Hunt’s summer break isn’t like other kids’. His closest companion is a Chaos-ridden wolf, Havoc. His father suspects him of being secretly evil. And, of course, most kids aren’t heading back to the magical world of the Magisterium in the fall. It’s not easy for Call . . . and it gets even harder …