From the imaginations of bestselling authors Holly Black and Cassandra Clare comes a heart-stopping plunge into the magical unknown. Think you know magic? Think again. The Magisterium awaits . . . Most people would do anything to get into the Magisterium and pass the Iron Trial. Not Callum Hunt. Call has been told his whole life that he should never trust a magician. And so he tries his best to do his worst – but fails at failing. Now he must enter the Magisterium. It's a place that's both sensational and sinister. And Call realizes it has dark ties to his past and a twisty path to his future. The Iron Trial is just the beginning. Call’s biggest test is still to come . . .