ABC will bring the first season of "Castle" to a close Monday night, and series star Nathan Fillion says the prospects for a second season are looking pretty good at the moment.
"The reaction we've been getting from the network is super positive, and the reaction from the audience has been positive," Fillion said in an interview Friday. "That's the most important thing."
Fillion and the rest of the "Castle" cast and crew will find out if the show  will be back on May 19, when ABC announces its lineup for next season. The numbers have been working in the show's favor, though -- its audience has grown in each of the past three weeks, hitting 10 million viewers last week.
Here's what Fillion had to say about working on the show, what to expect in the finale and the chemistry he has with co-star Stana Katic, who plays Kate Beckett, the NYPD detective who reluctantly chaperones Fillion's mystery novelist, Rick Castle, on her cases.