Image Credit: Everett/AP For 15 years, Supernatural was there for viewers of the beloved CW series through good times, bad times and the end times. The sic-fi and horror show debuted on September 13, 2005, and fans were immediately transfixed by the horrors, spooks, and stories of brothers Sam and Dean Winchester fighting the demons, monsters, and spirts that roam the world. The series comes to a blazing finale in November 2020. Throughout the series, the main stars have been an absolute mainstay, with more cast members coming and going - even some returning for tonight's final bow.