Orange Is the New Black fans, take note: This 2011 outing of Castle features a very smart, pre-Orange turn by Laura Prepon, who guest stars as an actress named Natalie Rhodes. She shows up at the precinct to research a movie role – just as author Rick Castle (series star Nathan Fillion) did when he first met up with Det. Kate Beckett (Stana Katic) in the series pilot. But now, Natalie is there to research the role of Nikki Heat, the heroine of Castle's successful cop novel – and a character based on Beckett. So Natalie is shadowing Beckett, and absorbing more of her mannerisms, and looks, every time she shows up. It’s a cleverly written hour, and a very playfully performed one, especially by Katic and Prepon.