Whee! Oh my (old) gods, this is perfect! And I'm only half-way through! Whee again! *bounces*
Seriously, I love everything about this. You've managed to capture the tone of Lovecraft absolutely spot-on, not to mention the voices of the Winchester boys, which are simply perfect. Also, I'm finding it rather refreshing how you've turned the tables on the brothers, making Sam the protective one for a change, 'cause I think Sam's played the damsel in distress for quite long enough already.