I always watch Castle anyway, but I'm really looking forward to tonight's. Look at all those pretty dogs! Also hoping for some Cesar Millan jokes.Episode 4:13 - An Embarrassment of Bitches: When a famous dog trainer is killed, the investigation keeps coming back to charismatic reality TV star Kay Cappuccio (guest star Hilarie Burton, “White Collar”). Kay, a favorite of tabloids and gossip websites the world over, has achieved stardom without possessing any discernible skill or talent. But there seems to be more to her story than she is letting on — does that include murder?