Castle premiered on ABC in March of 2009.
The show centers on a world-famous author that specializes in murder mysteries. He assists the NYPD homicide department solve crimes.
Nathan Fillion stars Richard “Rick” Castle, a major player in the literary world. At the start of the series, he's suffering from writer's block after killing off the main character in his novels.
Castle then meets detective Kate Beckett, who approaches him to help her catch a copy-cat killer staging murders based on scenes from his novels. Chemistry and crimes ensue!