John Blackwell made his return to Chance Harbor last night. But was it triumphant? Ominous? Traitorous?

It was most definitely mysterious.

And now Secret Circle fans have a few weeks to contemplate what it all means, as this CW drama won't return with a new episode until March 15. But at least the network has released the official preview for that installment, as it makes it rather clear that Cassie should tread carefully around her dad. View it here:

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