Watch Supernatural Season 4 Episode 11 Online. One of my favorite show, its the Supernatural is finally back. Fresh as the new year, Supernatural will entertain all of the viewers with a bang this year. After the Holiday season, Supernatural is back with its first episode of the year. Its the Supernatural Season 4 Episode 11. In this episode, Sam and Dean investigate a farm house that seems to be haunted by a woman in the walls. Watch Supernatural Season 4 Episode 11 Online free streaming.