Exclusive: Castle Books Jennifer Beals for 2-Parter

Jennifer Beals, Nathan Fillion Hold onto something, Castle fans: Another lady from Ron Castle's past is visiting town.Photo Gallery: Take a look at TV's most sexy crime fightersFlashdance and also the Chicago Code star Jennifer Beals will join the cast from the ABC drama for any two-episode arc throughout Feb sweeps, TVGuide.com has learned solely. She'll play Sophia Conrad, a wise, commanding and sexy CIA operative.Sophia joins Castle (Nathan Fillion) and Beckett (Stana Katic) in the quest for another CIA agent that has gone rogue and it is the key suspect in Castle and Beckett's murder situation. But Beckett soon becomes distracted because Castle and Sophia have a significant complicated history.When the show's good reputation for two-parters is any indicator, Beals' visit might be quite effective. Two seasons ago, Dana Delany assisted Castle and Beckett catch a murderer (who almost blew up Beckett inside her apartment), and this past year Adrian Pasdar performed a Homeland Security agent who depended on our heroes to prevent a dirty explosive device from coming up NY.Castle Boss: Castle and Beckett's new secrets really are a "ticking explosive device" Besides her breakout role in Flashdance and playing police Superintendent Teresa Colvin around the Chicago Code last season, Beals is better noted for her act as Bette Porter on Showtime's The L Word. She also recurred on Fox's Mislead Me.Castle returns with new episodes on Monday, Jan. 9 at 10/9c on ABC. Beals' two-parter is slated to air in Feb.