'Supernatural' Finale: Trailer, Preview Clips
Friday, May 20, 2011 at 10:58AM
Matt Sager in Supernatural

Supernatural's two-part season finale airs tonight at 8:00 pm on the CW, and there are shocks aplenty. For one, showrunner Sera Gamble tells TV Guide, "characters that people like will be killed." So, there's that. Also, H.P. Lovecraft is involved in the story. Yes, the actual deceased writer of Call of Cthulhu, H.P. Lovecraft.

So it's going to be an eventful couple of hours. Here's a promo for the event:

And check out these previews:

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