The first season of American crime-comedy-drama television series Castle premiered as a midseason replacement on ABC on March 9, 2009.

Richard Castle (Fillion) is a famous mystery novelist who has killed off the main character (Derek Storm) in his popular book series and has writer's block.

He is intrigued by this new window into crime and murder, and uses his connection with the mayor to charm his way into shadowing Detective Kate Beckett (Katic).

Castle decides to use Beckett as his muse for Nikki Heat, the main character of his next book series.

"[15] Jonah Krakow from IGN also commented on the cliche storytelling as he said "Castle proves that even a show with an unoriginal idea can be interesting and enjoyable if done well."