Dish Of Salt: Is Nathan Fillion Getting A New Love Interest On 'Castle'?

Dish Of Salt: Is Nathan Fillion Getting A New Love Interest On 'Castle'?

On location for ABC’s “Castle,” Nathan Fillion chats with AccessHollywood.com’s Laura Saltman about guest star Laura Prepon, who is taking on the role of Nikki Heat, but will their relationship heat up, as well? Also, who does Nathan want to play his character’s book alter ego, Jameson Rook?