Person of Interest is an American crime drama television series broadcasting on CBS. It is based on a screenplay developed by Jonathan Nolan. The series revolves around a former CIA officer (Jim Caviezel) recruited by a mysterious billionaire (Michael Emerson) to prevent violent crimes in New York City. Season three premiered on September 24, 2013. The show was moved from its season one and two time slot, Thursday at 9:00 p.m., to Tuesday at 10:00 p.m. CBS renewed the show for a fourth season on March 13, 2014 which is set to premiere on September 23, 2014.