The Bronze Key: Black, Клэр

Magic can save you
Magic can kill you
It should be a time of celebration. The Enemy of Death is dead; a severed head proof of his downfall. The magical world has no reason to believe otherwise, and Callum, Tamara and Aaron are celebrated as heroes.
But at a party held in their honour, things go horribly, brutally wrong. A fellow student is callously murdered, and it seems Call`s worst fears are confirmed: there is a spy in the Magisterium.
No one is safe.
Now, using the powerful magic they`ve been taught, the trio must risk their lives to track down the killer. But magic is dangerous - in the wrong hands it could bring terrible destruction. And reveal the deadliest secret of all…