Season 1 finale: John goes to Hell.
Season 2 finale: Demons leave Hell.
Season 3 finale: Dean goes to Hell.
Season 4 finale: Lucifer leaves Hell.
Season 5 finale: Sam and Adam go to Hell.
Season 6 finale: Leviathans leave Purgatory.
Season 7 finale: Dean and Cas go to Purgatory.
Season 8 finale: Angels leave Heaven.
Colin’s relationship with food in What’s Your Number?