Smallville's Justin Hartley to visit Castle

Justin Hartley Smallville's Justin Hartley will guest-star on Castle, TVLine reviews.The actor may have the boyfriend of Kay Cappuccio (guest star Hilarie Burton), a Kim Kardashian-like reality star who's famous to become famous. Unsure yet on once they got married for 72 days.Keck's Exclusives: Hilarie Burton can get the secrets for the CastleHartley most recently came out on Chuck.Castle returns Monday, 12 ,. 5. Hartley and Burton's episode, titled "An Embarrassment of Bitches," will air early next season.