While the case involves a surprising twist involving and drug-sniffing dogs, many viewers found the ultimate killer, Kay’s manager Reggie Starr (Justin Hartley), somewhat predictable. Standout Moments
: In a meta-humorous moment, paparazzi swarm Castle only to back away in disappointment when they realize he isn't Jason Bateman . [S4E13] An Embarrassment of Bitches
The investigation centers on the murder of , a world-renowned dog trainer and show judge found strangled with a leash in his dressing room. The prime suspect initially appears to be Kay Cappuccio (guest star Hilarie Burton), a Kardashian-style reality star "famous for being famous". While the case involves a surprising twist involving
: Despite her "airhead" persona, Kay shares a vulnerable moment with Esposito, lamenting her lack of personal substance. The prime suspect initially appears to be Kay
: Castle temporarily adopts Pilar's highly-trained dog, Royal , as the 12th Precinct's mascot. This leads to a delightful custody battle between Castle and Beckett over who gets to take the dog home.
: The episode features several "tender moments" between Castle and Beckett, including Castle showing Beckett how the dog likes to be scratched by gently rubbing her hand. Subplots and Themes