How long can a show like “Castle” really last on TV? When you look at the fact that it is procedural in nature, one way of looking at it could be that the show is capable of lasting just as long as the fans continue to watch it. We see shows like “CSI” and “NCIS” extend their runs beyond 200 episodes, and there’s not any guarantee that either of them is going to be ending anytime soon.

While it’s possible that this ABC show could last a similar length of time, that’s not how series star Nathan Fillion prefers it. Why? He’d like to see the show go out with a bang rather than what he feels would be a whimper. Speaking to Digital Spy in an interview a few months before season 5 begins, the former “Firefly” star explained that he really sees anywhere between two and three seasons as the longest that this show should go on while maintaining its high quality [READ THE REST HERE]