Changes

Castiel's vessel wades into the reservoir and, as they watch, disappears beneath the surface. A vortex then erupts outwards and spreads a black ooze throughout the water which vanishes moments later. Bobby remarks that, now that they're in the pipes, the Leviathans will be able to travel anywhere. Dean finds [[Castiel's Trench Coat]] floating in the water, but there is no other sign of the angel's vessel; the hunters assume that he has been destroyed by the Leviathans. Dean takes the trench coat with him as they leave the reservoir. Later Bobby tries to get Dean to talk about how he is coping with Castiel's death, along with everything else, but Dean refuses to talk.

Dean is trying to find help for Sam, who has been hospitalized due to a psychotics episode. It has been bought on by his hallucinations of his time in hell with Lucifer, caused after Castiel bought down the protective barrier in his mind installed by [[Death]]. While searing for help, Dean speaks to a hunter called [[Mackey]].