Alert all 'BSG' fans! Former Cylons Lucy Lawless and Tricia Helfer guest-star on 'No Ordinary Family' (Tue., 8PM ET on ABC). The mysterious Mrs. X (perhaps a nod to Lawless' 'Xena' days?) directs sexy Sophie (Helfer) to use her feminine wiles to turn Jim Powell all googly-eyed and control his every action.

He's mesmerized by the former Cylon, but Jim's wife Stephanie combats her charms with real love. "How did you know your kiss would break Sophie's spell?" Jim asks her. She replies, "I kissed you for me. I needed you to remember who we are together."

So the master plan to destroy Dr. King's facility is thwarted. "No blast, no nothing," says Mrs. X. Sophie answers, "I don't know what happened. I had everything planned out perfectly." "I'll be calling on you again," says Mrs. X. No she won't...

Watch the full episode here: