The Chrysalis Key - The Travellers, #1

"The Breakfast Club meets Harry Potter but darker. Perfect for fans of "The Prison Healer and The Magicians" Five teenagers. Three magical schools. A secret family curse. A tale of epic proportions you'll never forget. In the summer of 1999 in the unassuming Brisbane town of Breakfast Creek, five teenagers find themselves up against a powerful agent of darkness. Henry, Melanie, Julia, Hugh and Aiden never expected their detention to result in the execution of their school principal.
All of a sudden they are on the run from a demonic general with a penchant for children. Chrysalis school has slept for 50 years. But now she's ready to awaken. The course of their lives is about to change forever.