After Sam has a vision of Dean killing a young man who seems to be possessed by a demon, the two brothers head off to Oregon to search for answers. They come across a town infected by a deadly virus that drives a person to kill.
Sam becomes infected by one of the locals and prepares for his deadly fate, but after nothing happens to him, Dean decides to come clean and reveal what John whispered to him before he died.
original airdate--December 07,2007 rating--3.12 million
songs--End Credits & Mo' Guitar Grit by Jay Gruska
Goof--In the scene before Dean makes the promise to Sam, as the camera pans along the side of the Impala, in the rear of the car, you can see the dolly track that the camera runs along.
Trivia--Dean introduces the brothers as US Marshals, using the names Billy Gibbons and Frank Beard. They are members of the band ZZ Top.