Nathan Fillion Reacts 'Like a Sleeper Agent' As 'The Rookie' Co-Star Pranks Him Mid-Comic Con originally appeared on Parade.

The Rookie star, Nathan Fillion explains that it isn't always easy to film your show if it's popular. Find out more here.

For those who know Fillion only from The Rookie, a return to Castle uncovers the formula for his lasting popularity: a rogueish charm combined with a rich emotional center. Before Castle, Nathan ...

And what's Comic-Con without a little superhero flair? Marvel's "X-Men '97" stars Lenore Zann and Isaac Robinson-Smith joined ...