If you'd like to get caught up on how Supernatural left off last season and some spoilers about what's in store for season 6, read the "Previously On... Supernatural" summary I posted earlier today.

The CW has released a sneak peek for the upcoming season premiere of Supernatural, which is set to air on Friday (September 24).  It's pretty spoilery in terms of guest stars (at least, the guest star who's not Mitch Pileggi, who has already been spoiled), but I'm inclined to believe it's a dream, which would probably mean that the scene from this promo with Lisa getting moved up the wall is also a dream.

On the other hand, I could be completely, utterly wrong.  But that's ok, because I'm just happy about the return of Supernatural on Friday.  Check out the sneak peek below and then go take a look at the promo photos we previously posted for the season premiere.

MITCH PILEGGI (“X-Files,” “Sons of Anarchy”) RETURNS AS DEAN AND SAM’S GRANDFATHER

It’s a year later and Dean (Jensen Ackles) has given up hunting and is living with Lisa (guest star Cindy Sampson) and her son Ben (guest star Nicholas Elia).

Mysteriously freed from his cage in hell, Sam (Jared Padalecki) finds Dean and tells him he needs to rejoin the fight and introduces Dean to a world—a family—he never even knew existed: the Campbells, his mother’s family, lead by none other than their Grandfather Samuel (Pileggi).