"Supernatural follows the thrilling and terrifying journey of brothers Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles), who lost their mother 27 years ago to a mysterious and demonic supernatural force. Subsequently, their father John (Jeffrey Dean Morgan) raised them to be soldiers. He taught them about the paranormal evil that lives in the dark corners and on the back roads of America…and he taught them how to kill it.
Sam and Dean have spent the last seven years battling the things that go bump in the night. Over the years, with the help of fallen angel Castiel (Misha Collins) and the King of Hell, Crowley (Mark A. Sheppard), the Winchesters have straddled the line between good and evil."
The marathon starts with the episode "Death Takes a Holiday" from season four and ending at 11 a.m. the next day with "Sex and Violence," also from season four. Other highlights include season five's "The Real Ghostbusters," season four's "Monster Movie" and season two's "Crossroad Blues."
We're certain you'll be seeing some of your favorite episodes. What is your favorite Supernatural episode?
And remember, new episodes of season eight air Wednesdays at 9 p.m. ET.