Fifteen-year-year-old Callie Hall has just found out that she is a witch...and things keep going wrong. Sometimes her mind seems to make things happen, things she cannot control. She can set fire to things without a match, and when shes angry people can get hurt. Her friend Josh understands that shes a bit strange, but it is only on a dark and dangerous visit to the tunnels beneath the ruins of St Andrews' castle that he realizes just how strange she really is. Something comes back with Callie--in Callie--something she cannot escape. Can Callie control her power long enough to send back the darkness before it takes over her life? Will Josh ever understand her secret? A brilliant, engrossing young peoples fantasy from the author of Winterbringers and The Keepers Daughter.