It was nice and extra creepy...a little too slashy for my taste but I'm sure all you GG must be quite pleased
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The vibe/aesthetic of the episode was a bit different than usual IMO, but it fitted the story and setting perfectly and that is what I guess/hope what they were going for.
Some really awesome lines and moments though.
For me this episode basically showed how much similar Sam and John are(were) and how different Dean is from the two of them...