Kay Cappuccio is a character portrayed by Hilarie Burton in the ABC crime series Castle. Kay is a TV reality star who was a suspect in the murder of famous dog trainer Francisco Pilar. Whilst initially coming across as an airhead, an image not counteracted by her fleeing a murder scene, in the course of the episode she shows a remarkable memory, compassion for both people and animals, and an ability not to believe the entirety of her own publicity, alongside other less admirable traits.