Richard Castle is a fictional character from the television series Castle, which aired from 2009 to 2016. He is portrayed as a successful mystery novelist who becomes involved in solving crimes alongside the NYPD. His character is known for his charm, wit, and a knack for getting into trouble while pursuing his passion for writing. In the series, Castle forms a close partnership with Detective Kate Beckett, who often challenges his unconventional methods. The show blends elements of crime, drama, and romance, showcasing Castle's creative process and his interactions with various characters, including his family and friends.