As he's locked away in a room withdrawing from demon blood, Sam (Jared Padalecki) sees a vision of his mom Mary (Samantha Smith). In this vision, his mother tells him that he must continue on his journey without Dean (Jensen Ackles) by his side. But it's just a hallucination...right? Watch Supernatural on TNT. Season 4 Episode 21: When the Levee Breaks #Supernatural #JaredPadalecki #JensenAckles #TNT SUBSCRIBE: bit.ly/SubscribeTNT Download the TNT App: bit.ly/1GcZDJb About Supernatural: Twenty-six years ago, Sam Winchester and Dean Winchester lost their mother to a mysterious and demonic supernatural force. Subsequently, their father John 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... he taught them how to kill it. Starring Jared Padalecki and Jensen Ackles. About TNT: The home of AEW, NBA on TNT, Rich & Shameless, Supernatural, The Lazarus Project, sports coverage and more. ...