Supernatural got a bit silly this week, taking viewers into a world of cartoon deaths.

But things will grow a tad more serious on next Wednesday's midseason finale, as "Citizen Fang" focuses on major contention between brothers. Over what? A vamp kill. Over whom? Benny, of course.

Is he responsible? Sam is certainly suspicious. Watch the official CW preview now:

And then feast your eyes on this Supernatural Season 8 sneak peek. It sets the siblings off on their mission, but not before an argument ensues:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.