Witches, hunters and nerds oh my!
In 1935 when the Men of Letters lair was first used, a legendary hunter brought a witch in that would eventually become the stuff of legends. Flash forward the future and Sam thinks that he may have found a way to track the angels and keep Castiel safe.
While searching for their prophet, Sam and Dean get a tip from an old friend who just happens to be in the neighborhood.
Since the second trial, Sam is only looking worse. Though he wants to help, Dean knows that he isn't in any shape to help him track down Kevin. That's when they get an email from Charlie.