Nathan Fillion Once Named the 1 ‘Castle’ Co-Star He Wanted to Have a Romance Storyline With
Actor Nathan Fillion had Stana Katic as a love interest for eight seasons on Castle. But other than Katic, there was another ...
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'Castle': THIS Is Why The Hit Series Cancelled!
From 2009 to 2016, the titular protagonist battled crime in New York as an author alongside the police detective "Kate Beckett" (Stana Katic) and together they gained a large fan base.