Castle beauty Stana Katic sat down with E! News to dish about tonight's all-new film noir episode, "The Blue Butterfly."
"There's a little bit of stuff, a little bit of action," she giggles before admitting that Castle and Beckett share a really great love story in flashback form. We can't wait!
Original Air Date: Castle Season 4, Episode 14, "The Blue Butterfly" airs on Monday, February 6, 2012 at 10 p.m. ET on ABC.