Supernatural is an American television series created by Eric Kripke. It was first broadcast on September 13, 2005, on The WB, and subsequently became part of successor The CW's lineup.The series was filmed in Vancouver, British Columbia, and surrounding areas and was in development for nearly ten years, as creator Kripke spent several years unsuccessfully pitching it. The pilot was viewed by an estimated 5.69 million viewers,and the ratings of the first four episodes prompted The WB to pick up the series for a full season. Originally, Kripke planned the series for three seasons but later expanded it to five. The fifth season concluded the series' main storyline,and Kripke departed the series as showrunner.The series continued on for several more seasons with new showrunners, including Sera Gamble, Jeremy Carver, Robert Singer and Andrew Dabb.With its eleventh season, Supernatural became the longest-running American live-action fantasy TV series.The series was renewed for a fifteenth and final season which consisted of 20 episodes,which premiered on October 10, 2019.The series concluded on November 19, 2020, with 327 episodes aired.