Young Dean/older creature? Castiel possibly pre-slash

[zoetron56.livejournal.com]

I cannot remember the title or author to this story and it's constantly on my mind.  Dean is dared by his clique of not-so-bright school friends to stay one night in the scary mansion, supposedly haunted by evil warlocks who still defend their territory, overlooking their village.  When Dean, armed only by a small video recording device, settles into the furnished, but eerily empty mansion, he can't help feeling he isn't entirely alone.  He soon starts to investigate the wings of the mansion and discovers another "person" called Castiel.  Through awkward starts and stops, the two boys become strange friends.  Their enforced isolation soon gets them to tell bits and pieces of their lives, both happy and heartbreaking.  When the sun rises, Dean leaves the mansion with promises to return and bring books, food, and news of what is going on outside of Castiel's supernatural imprisonment in order to relieve some of Castiel's loneliness.  By this time, Dean knows Castiel is some sort of witch or cursed creature, and vows never to betray Castiel's secrets or their tentative trust in each other.  This is the part of this fanfic where I lost it on my computer!  I would be greatly appreciative if someone in this community could provide me with the author or title of this story!