Castiel can see ghosts, even when they cannot manifest. The same way he can see demons true demonic being under their vessel's skin. He is lonely, and so is Kevin. They spend the night telling stories - their versions of horror stories, or regular stories - sometimes it is hard to find a story that is not horror.
Campfire horror stories, Castiel & Kevin, or others
He is lonely, and so is Kevin.
They spend the night telling stories - their versions of horror stories, or regular stories - sometimes it is hard to find a story that is not horror.