Traitor

When a crystal is magically stolen from the abandoned house, the Circle decides it was the traitor witch working with Eben. Jake calls for a meeting with Isaac to see if they can get him to change sides, only to find out that Isaac has been killed by Eben. Cassie's loose grasp on her dark magic threatens to destroy any possible alliance when their pursuit of the traitor leads them to the "Creepiest Place on Earth." Meanwhile, Faye and Jake work together to steal Dawn's crystal, Melissa and Adam pair up and uncover a new magic trick, and a frustrated Diana reaches out to Charles for help. Diana and Cassie chase the traitor in the "Creepiest Place on Earth" and Cassie uses dark magic to stop him only to find out it's Nick who is supposed to be dead.