Castle - Season 4 Episode 13 -

Dog trainer Francisco Pilar is murdered after a disputed ruling in the Manhattan dog show. Castle gets the Labrador he was training adopted as team mascot till further notice, and his nosy proves quite useful. Airhead reality TV star Kay Cappuccio, the last seen in Pilar's tent, has a motive, but was he or she spied on by the camera planted in the dog's collar and why is there a customs undercover agent?