Beware, spoilers ahead! A very intriguing new video clip has been released from tomorrow’s Secret Circle episode 1×20 “Traitor”!

The video shows newly-discovered sisters Cassie and Diana discussing their Blackwell heritage and discussing killing someone. Watch it below and voice your theories about the clip in the comments or on Twitter @SecretDiariesTV!

Episode description for 1×20 “Traitor”:

When a crystal is magically stolen from the abandoned house, the Circle decides it was the traitor witch working with Eben so Jake calls for a meeting with Isaac to see if they can get him to change sides. 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. Meanwhile, a frustrated Diana reaches out to Charles for help.