Cassie Blake has dark magic running through her blood. This is not up for debate.

But can she control it? That will be the central question running through The Secret Circle when it returns with new episodes on January 5.

Watch a clip from the aptly-titled winter premiere ("Darkness") below and find out what Jake's take is on Cassie's heritage, along with Cassie's scary response to his intrusion:

Also on tap when The Secret Circle returns:

• We'll meet Diana's grandmother.
• Grey Damon debuts as a mysterious love interest for Faye.
• Cassie turns to Adam in a time of need.

Watch the official CW 2012 premiere promo now and bookmark the TV Fanatic Secret Circle section. There will clearly be A LOT to discuss in the days/weeks/months ahead.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.