Supernatural treated its fans to a Halloween fitting for The CW drama last night, one filled with Toblerone and vampire killings.

But look for things to get a lot more intense next Wednesday, as the official network teaser for "Southern Comfort" depicts a very angry Dean and serious tension between the brothers.

Not featured, yet making his presence felt on the installment: DJ Qualls as Garth! Yes, he's back, TV Fanatics, having assumed Bobby's duties during the past year. Prepare yourself for the presence of an "avenging ghost" on the episode and watch the preview below:

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