In the season finale, the demons target Sam when they figure out they might not be able to stop the Devil, but will be able to capture his Sam (who they think is his son).  Sock ends up falling for a female demon, a succubus, who feeds off human life and whenever she kisses him, he loses a year of his life.  The soul tells Sam that the Devil and his father are lying to him about his birth and that he may be the Devil's son.  Tony and the Demons attempt t lock them up, but Steve appears and convinces Tony to save Sam, leaving Mr. Oliver behind.  The episode ends with Mrs. Oliver digging Mr. Oliver out of his "grave."