John and Mary are currently at odds, clashing over their different ways of handling trauma and the reality of their future as hunters. This emotional turbulence makes them vulnerable, and Mary is eventually lured into Limbo's tent.
Millie arrives at the carnival with news that a witness has come forward, clearing John’s name for the murder he was suspected of earlier in the season. The Winchesters Season 1 - Episode 12
Season 1, Episode 12: The Tears of a Clown TV Show ... - IMDb John and Mary are currently at odds, clashing