Puppet Master

I know what you are... 

Jac has no idea what Gabbi means. He thought he was the puppet master in Blyne's travelling circus. Other people seem to think he is dangerous and want to take away his newly found magic. Puppets are coming alive and there's a huge hole swallowing the town of Sweetwater! 

What is the mysterious Star Crystal and why is Ivan, the archmage, after him? 
The race is on to be first to reach the crystal and discover the truth about who Jac really is.