So far as set-ups proceed, however, placing the Winchesters at precisely the exact same area as the spawn of Satan before clipping to black is a guaranteed attention-grabber - period 13 or not. That is not too surprising, considering the problem that Sam and Dean discovered themselves at : stuck at a home together with the fast maturing son of the devil, minutes when they lost their mom, Castiel, also Crowley - however, his being a backstabbing fanatic and that's not too much of a reduction when you come to consider it.
