"Castle": Reowr! It's just two weeks until the Season 5 premiere, [Spoiler (click to open)]when you'll see Beckett transformed into a fierce lady tiger -- even outside the bedroom with Castle. She really brings out her claws for the mastermind behind her mother's death -- and the show's new baddie. What she does is so shocking that its repercussions will be felt for the rest of the season.