An American television series focused on the horror/supernatural genre. Creator Eric Kripke has always maintained that the "story" could be told in five seasons, and if they made it through Season 5, there would be no plans to continue the series beyond that. As of 2008, Supernatural is in its 4th season, awaiting the green light for its fifth and final season.
The series centers on the Winchester brothers Sam and Dean, portrayed by Jared Padalecki and Jensen Ackles respectively. Together, the brothers travel across America to investigate paranormal happenings. Their main mode of transportation is a 1967 Chevy Impala, dubbed "Metallicar." (Dean, the owner of the car, has an affinity for classic rock music.) Similar to The X-Files, Supernatural has an overarching mythology that concerns the majority of episodes. This said, there are a handful of stand-alone episodes each season that deal with an isolated, unexplained occurrence, a sighting, etc.
Supernatural premiered September 18, 2005, on The WB. The following year, the network merged with UPN to form the current CW, on which Supernatural now airs after fellow genre series Smallville.