Fillion and Hawley spoke about the upcoming season, which is set to release in 2026. During the panel, a sizzle reel revealed ...

In the end, however, that might’ve been exactly what happened to Castle. Nathan Fillion felt he was wrong about this 1 thing about the show’s natural ending. Related.

Actor Nathan Fillion had Stana Katic as a love interest for eight seasons on Castle. But other than Katic, there was another character Fillion wouldn’t have minded Rick Castle mingling with.